Guidance device for C.T. guided drainage and biopsy procedures
First Claim
1. A hand-held guidance device for allowing a user to accurately place a catheter within the body of patient, the catheter having a tip and a longitudinal axis, said guidance device comprising in combination:
- a. a base adapted to be manually supported by the user, said base having first and second opposing ends and having a longitudinal axis extending therebetween, said base also having an upper surface;
b. level means secured to said base for indicating to the user whether the longitudinal axis of said base is lying in a horizontal plane;
c. a needle support arm pivotally coupled to said base adjacent the first end of said base for pivotal movement about a pivot axis;
d. protractor means disposed proximate to the first end of said base for indicating the relative angular relationship between said needle support arm and said base; and
e. needle guide means secured to said needle support arm for supporting the catheter at a predetermined desired angle relative to said base, said needle guide means supporting the catheter for sliding movement along the longitudinal axis of the catheter in order to permit the user to guide the catheter into the patient'"'"'s body at said predetermined desired angle while the user manually supports said base.
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Accused Products
Abstract
A handheld guidance device for use in conjunction with a C.T. scanner allows a user to accurately place a catheter within a patient'"'"'s body. The guidance device includes a generally planar base including a bubble level to aid in maintaining the base horizontal. A needle support arm is pivotally secured to the base adjacent one end thereof, and a cooperating protractor indicates the relative angular relationship between the needle support arm and the base. Needle guides are provided on the support arm for slidingly supporting the catheter at a desired angle as the catheter is inserted into the patient'"'"'s body. Graduations are marked on the needle support arm for indicating the depth of insertion. A reference line formed upon the base is adapted to be aligned with a transverse light beam projected by the C.T. scanner.
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Citations
20 Claims
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1. A hand-held guidance device for allowing a user to accurately place a catheter within the body of patient, the catheter having a tip and a longitudinal axis, said guidance device comprising in combination:
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a. a base adapted to be manually supported by the user, said base having first and second opposing ends and having a longitudinal axis extending therebetween, said base also having an upper surface; b. level means secured to said base for indicating to the user whether the longitudinal axis of said base is lying in a horizontal plane; c. a needle support arm pivotally coupled to said base adjacent the first end of said base for pivotal movement about a pivot axis; d. protractor means disposed proximate to the first end of said base for indicating the relative angular relationship between said needle support arm and said base; and e. needle guide means secured to said needle support arm for supporting the catheter at a predetermined desired angle relative to said base, said needle guide means supporting the catheter for sliding movement along the longitudinal axis of the catheter in order to permit the user to guide the catheter into the patient'"'"'s body at said predetermined desired angle while the user manually supports said base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A guidance device for use in conjunction with a C.T. scanner for allowing a user to accurately place a catheter within the body of a patient, the catheter having a tip and a longitudinal axis, the C.T. scanner being adapted to project a transverse reference beam of light across the patient'"'"'s body to indicate the location of the vertical plane through which the patient'"'"'s body is being scanned, said guidance device comprising in combination:
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a. a base having first and second opposing ends and having a longitudinal axis extending therebetween, said base also having an upper surface; b. level means secured to said base for indicating to the user whether the longitudinal axis of said base is lying in a horizontal plane; c. a needle support arm pivotally coupled to said base adjacent the first end of said base for pivotal movement about a pivot axis; d. protractor means disposed proximate to the first end of said base for indicating the relative angular relationship between said needle support arm and said base; and e. needle guide means secured to said needle support arm for supporting the catheter at a predetermined desired angle relative to said base, said needle guide means supporting the catheter for sliding movement along the longitudinal axis of the catheter in order to permit the user to guide the catheter into the patient'"'"'s body at said predetermined desired angle; f. said base including a reference line formed upon the upper surface thereof and extending substantially between the first and second opposing ends of said base, said reference line being positioned to lie perpendicular to said pivot axis and within a vertical plane in which the catheter is supported when said pivot axis is horizontal, wherein the user positions said base to align said reference line with the transverse reference beam of light projected by the C.T. scanner in order to maintain the catheter within the vertical plane of the patient'"'"'s body being scanned. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification