Integrated catheter for diverse in situ tissue therapy
First Claim
1. A catheter assembly for enabling a physician to utilize diverse in situ therapy modalities at selected tissue comprising:
- A. catheter means having a lumen therethrough from a proximal to a distal end thereof for extending from a location externally of a patient to tissue being treated,B. bipolar electrode means attached to the distal end of said catheter means for providing hemostatic therapy to the selected tissue, said bipolar electrode means having a lumen therethrough aligned with said catheter means lumen for enabling the transfer of fluids between said catheter means lumen and the selected tissue through said bipolar electrode means lumen, andC. needle means for providing injection therapy, said needle means being electrically isolated from said bipolar electrode means and extending from a proximal end externally of the patient through said lumens in said catheter means and said bipolar electrode means for axial displacement whereby a distal portion of said needle means extends distally beyond and retracts proximally of a distal end surface of said bipolar electrode means.
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Accused Products
Abstract
An integrated catheter assembly for enabling diverse in situ therapies includes a catheter with an irrigation fluid lumen, a distal tip portion that acts as a hemostat and a needle for injection therapy that extends through the catheter lumen and a lumen in the distal tip portion. A needle hub structure carries the catheter and provides a sealing entrance for a needle that can be displaced between extended and retracted positions. The needle and electrodes are electrically isolated. The apparatus provides a physician the options of irrigating tissue, cauterizing tissue or injecting tissue without the need for removing the apparatus from the working channel of an endoscope.
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Citations
18 Claims
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1. A catheter assembly for enabling a physician to utilize diverse in situ therapy modalities at selected tissue comprising:
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A. catheter means having a lumen therethrough from a proximal to a distal end thereof for extending from a location externally of a patient to tissue being treated, B. bipolar electrode means attached to the distal end of said catheter means for providing hemostatic therapy to the selected tissue, said bipolar electrode means having a lumen therethrough aligned with said catheter means lumen for enabling the transfer of fluids between said catheter means lumen and the selected tissue through said bipolar electrode means lumen, and C. needle means for providing injection therapy, said needle means being electrically isolated from said bipolar electrode means and extending from a proximal end externally of the patient through said lumens in said catheter means and said bipolar electrode means for axial displacement whereby a distal portion of said needle means extends distally beyond and retracts proximally of a distal end surface of said bipolar electrode means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A catheter assembly for enabling a physician to utilize diverse in situ therapy modalities for selected tissue comprising:
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A. bipolar electrode means for providing hemostatic therapy to the selected tissue, said bipolar electrode means including; i. first and second electrodes, ii. a body portion having a distal end for carrying said electrodes, iii. a shank portion extending proximally of said body portion, said body and shank portions being formed about a central axis and defining an axially extending lumen therethrough that is open at the distal and proximal ends of said electrode means, and iv. a cylindrical pervious needle guide portion extending proximally from said shank portion, catheter means having a lumen therethrough from a proximal to a distal end thereof for extending from a proximal location externally of a patient to the selected tissue, said catheter means including; i. an catheter with a lumen therethrough for enabling the transfer of irrigation fluids, said distal end of said catheter overlying and supporting said shank portion, ii. catheter hub means at the proximal end of said catheter for carrying said catheter, and iii. electrical leads led from the proximal location through said catheter hub means and into said catheter lumen for connection to said first and second electrodes, c. needle means for providing injection therapy including; i. an elongated needle having a lumen therethrough, ii. operating means at the proximal end of said elongated needle means, iii. needle hub means attached to said catheter intermediate said catheter hub means and said distal end of said catheter for guiding said elongated needle into said catheter lumen whereby said needle extends distally within said catheter lumen in electrical isolation from said first and second electrode means, and iv. stop means at a predetermined location spaced from the distal end of and formed on said elongated needle for engaging the proximal end of said shank portion thereby to limit the extension of said elongated needle from the distal tip of said bipolar electrode means. - View Dependent Claims (15, 16, 17, 18)
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Specification