Retractable skin nicker
First Claim
Patent Images
1. A cutting device with a retractable blade for making skin incisions about a guidewire entry location, comprising:
- a housing comprising a first opening, a second opening and a channel connecting said first and second openings, wherein a guidewire passing through said channel will exit said channel at said first opening at a pre-defined angle from a bottom surface of said housing;
a spring disposed in said housing in a relaxed condition, wherein said spring is compressed when said device is actuated, said spring having a first end and a second end, wherein said first end of said spring abuts at least one inner surface of said housing when said device is actuated;
an actuating member, wherein at least a portion of said actuating member is slidably disposed in a third opening on said housing, wherein when said device is actuated said actuating member abuts said second end of said spring; and
a blade coupled to said actuating member, said blade being slidably disposed within, said housing, wherein said blade is contained within said housing when said device is not actuated, and wherein said blade protrudes from said housing at or about said first opening when said device is actuated.
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Abstract
A surgical cutting device for producing a skin incision of controlled length and depth at a guidewire skin puncture location. The cutting device is particularly useful for making incisions for the insertion of catheters. In one variation, the cutting device comprises a retractable blade and a channel for positioning the cutting device around a guidewire. The channel may be adapted such that when a guidewire is placed inside the cutting device, the guidewire may exit the channel at a 30 degree angle relative to the base of the cutting device. Methods for using the cutting device are also described.
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Citations
53 Claims
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1. A cutting device with a retractable blade for making skin incisions about a guidewire entry location, comprising:
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a housing comprising a first opening, a second opening and a channel connecting said first and second openings, wherein a guidewire passing through said channel will exit said channel at said first opening at a pre-defined angle from a bottom surface of said housing;
a spring disposed in said housing in a relaxed condition, wherein said spring is compressed when said device is actuated, said spring having a first end and a second end, wherein said first end of said spring abuts at least one inner surface of said housing when said device is actuated;
an actuating member, wherein at least a portion of said actuating member is slidably disposed in a third opening on said housing, wherein when said device is actuated said actuating member abuts said second end of said spring; and
a blade coupled to said actuating member, said blade being slidably disposed within, said housing, wherein said blade is contained within said housing when said device is not actuated, and wherein said blade protrudes from said housing at or about said first opening when said device is actuated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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11. The cutting device according to claim i, wherein said spring comprises a resilient plastic.
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24. A cutting device with a retractable blade for making skin incisions at a guidewire entry location, comprising:
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a housing comprising a first opening, a second opening and a channel connecting said first and second openings, wherein a guidewire passing through said channel will exit said channel at said first opening at a pre-defined angle from a bottom surface of said housing;
a spring disposed in said housing in a relaxed condition, wherein said spring is extended when said device is actuated, said spring having a first end and a second end, wherein said second end of said spring is connected to at least one inner surface of said housing; and
a blade coupled to said first end of said spring, said blade being slidably disposed within said housing, wherein said blade is contained within said housing when said device is not actuated, and wherein said blade protrudes from said housing at or about said first opening when said device is actuated. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method of making a skin incision about a guidewire entry location, comprising:
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inserting a distal end of a guidewire into a hollow body organ within a mammalian body while leaving a proximal end of said guidewire outside of said body;
placing a cutting device over said guidewire, wherein said cutting device comprises;
a housing comprising a first opening, a second opening and a channel connecting said first and second openings, wherein a guidewire passing .through said channel will exit said channel at said first opening at a pre-defined angle from a bottom surface of said housing;
a spring disposed in said housing in a relaxed condition, said spring having a first end and a second end, wherein said first end of said spring abuts at least one inner surface of said housing when said device is actuated;
an actuating member, wherein at least a portion of said actuating member is slidably disposed in a third opening on said housing, wherein when said device is actuated said actuating member abuts said second end of said spring; and
a blade coupled to said actuating member, said blade being slidably disposed within said housing, wherein said blade is contained within said housing;
actuating said cutting device, wherein said spring is compressed and said blade protrudes from said housing at or about said first opening; and
making an incision about said guidewire entry location. - View Dependent Claims (49)
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50. A method of making a skin incision about a guidewire entry location, comprising:
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inserting a distal end of a guidewire into a hollow body organ within a mammalian body while leaving a proximal end of said guidewire outside of said body;
placing a cutting device over said guidewire, wherein said cutting device comprises;
a housing comprising a first opening, a second opening and a channel connecting said first and second openings, wherein a guidewire passing through said channel will exit said channel at said first opening at a pre-defined angle from a bottom surface of said housing;
a spring disposed in said housing in a relaxed condition, said spring having a first end and a second end, wherein said second end of said spring is connected to at least one inner surface of said housing; and
a blade coupled to said first end of said spring, said blade being slidably disposed within said housing;
wherein said blade is contained within said housing;
actuating said cutting device, wherein said spring is extended and said blade protrudes from said housing at or about said first opening; and
making an incision about said guidewire entry location. - View Dependent Claims (51)
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52. A method of making a skin incision about a guidewire entry location, comprising:
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inserting a distal end of a guidewire into a hollow body organ within a mammalian body while leaving a proximal end of said guidewire outside of said body;
placing a cutting device over the guidewire at said proximal end of said guidewire, wherein said cutting device comprises a retractable blade, and wherein said guidewire forms an approximately 30 degree angle with a bottom surface of said cutting device;
sliding said cutting device along said guidewire until said cutting device comes into contact with said mammalian body;
actuating said cutting device; and
making an incision about said guidewire entry location.
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53. A retractable surgical blade comprising:
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a wedge-shaped housing having a bottom surface, said housing further having a channel, said channel providing a straight path from an opening on a first side of said housing to a second opening on said second side of said housing, said straight path and said bottom surface forming an angle of approximately 30 degrees, said housing comprising at least two detachable polymer parts;
a spring disposed in said housing in a relaxed condition, wherein said spring is compressed when said device is actuated, said spring having a first end and a second end, wherein said first end of said spring abuts at least one inner surface of said housing when said device is actuated;
an actuating member, wherein at least a portion of said actuating member is slidably disposed in a third opening on said housing, wherein when said device is actuated said actuating member abuts said second end of said spring; and
a No. 11surgical blade connected to said actuating member, said blade being slidably disposed within said housing, wherein said blade is contained within said housing when said device is not actuated, and wherein said blade protrudes from said housing at or about said first opening when said device is actuated.
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Specification