ROTARY CATHETER DRIVE UNIT CONTAINING SEAL-SETS

• US 20150094733A1
• Filed: 12/11/2014
• Published: 04/02/2015
• Est. Priority Date: 05/04/2010
• Status: Abandoned Application

• Current Assignee: Samuel Shiber
• Original Assignee: Samuel Shiber
• Inventors: Shiber, Samuel
• Application Number:
  US14/568,014
• Publication Number:
  US 20150094733A1
• Time in Patent Office: Days
• US Class Current: 606/127
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22048 Balloons
• CPC Class Codes: A61B 2017/320044 Blunt dissectors blunt suture needles A61B2017/06085
• CPC Class Codes: A61B 2017/320766 eccentric
• CPC Class Codes: Y10T 408/03 Processes

Abstract

A rotary catheter drive unit containing a motor and a seal-set, an output shaft of the motor being power transmittingly connected to a flexible shaft that is rotatably disposed through the seal-set, the seal-set comprising a bearing and an adjacent seal defining a first and a second concentric bores, respectively, the first bore being slightly larger than a diameter of the shaft so that it rotatably and accurately supports the shaft, the second bore being slightly smaller than the diameter so that it seals around the shaft, the bearing aligning the shaft, so that it is concentric with the second bore, by deflecting the shaft to compensate for eccentricity and misalignment of the second bore relative to the output shaft of the motor.

Claims

1. A rotary catheter drive unit containing a motor and a seal-set,

an output shaft of said motor being power transmittingly connected to a flexible shaft that is rotatably disposed through said seal-set,

said seal-set comprising a bearing and an adjacent seal defining a first and a second concentric bores, respectively,

said first bore being slightly larger than a diameter of said shaft so that it rotatably and accurately supports said shaft,

said second bore being slightly smaller than said diameter so that it seals around said shaft,

said bearing aligning said shaft, so that it is concentric with said second bore, by deflecting said shaft to compensate for eccentricity and misalignment of the second bore relative to said output shaft of said motor.

2. A rotary catheter drive unit as in claim 1 containing one seal-set distally relative to said motor and a second seal set seal-set proximally relative to said motor, wherein said flexible shaft passes through both said seal-sets and said motor.

3. A rotary catheter drive unit as in claim 2 wherein said shaft is hollow, extends out of a proximal end of said housing and is slideable and rotatable over a guidewire,

a slideable proximal extension of said housing containing a seal adapted to cross and exposes an open distal end of said hollow shaft when said proximal extension is slid distally and, vice versa said seal adapted to cross said distal end

of said hollow shaft when said proximal extension is slid proximally and close.

4. A process of manufacturing a seal-set comprising the following steps:

affixing a bearing having a first bore to a seal material,

inserting a drill slightly smaller than a diameter of said bore so that said bore rotatably and accurately supports said drill,

rotating and advancing said drill to cut a second bore in said seal material that is slightly smaller and concentric relative to said first bore.

5. A process of manufacturing a seal-set wherein said drill is hollow shaft with a sharp tip.

6. A process of manufacturing a seal-set wherein said drill is a single point cutter.

7. A process of manufacturing a seal-set wherein said drill is hypodermic needle.