Rotatable attachment mechanism for attaching a medical obstruction treatment device sub-assembly to a drive motor unit
First Claim
1. A motor and brush assembly preferably for use in a medical procedure at a site within a patient'"'"'s body comprising:
- a brush sub-assembly comprising;
an elongated, flexible, rotatable brush drive shaft extending between a proximal drive shaft end and a distal drive shaft end;
a brush formed in a distal portion of the brush drive shaft;
a proximal drive member formed in a proximal portion of said brush drive shaft;
an elongated, flexible, brush delivery catheter extending between a proximal catheter end and a distal catheter end and formed with a catheter lumen extending between proximal and distal catheter lumen end openings at the proximal and distal catheter ends;
fitting means for fitting a distal drive shaft section of said brush drive shaft within said catheter lumen and for extending said proximal drive member proximally of said proximal catheter lumen end opening for allowing rotation of said brush drive shaft with respect to said brush delivery catheter; and
a brush sub-assembly connector having a proximal seat extending proximally from said fitting means through which said proximal drive member extends proximally; and
a drive motor unit adapted to be coupled with said brush sub-assembly to effect rotation of said brush drive shaft further comprising;
a drive motor housing containing a drive motor lumen extending between drive motor lumen proximal and distal end openings in said drive motor housing, said drive motor lumen dimensioned to receive said proximal drive member;
drive means located within said drive motor housing for engaging said proximal drive member when it is inserted through said distal drive motor lumen end opening and into said drive motor lumen and for rotating said drive shaft; and
a drive motor unit connector having a drive motor unit receptacle for engaging said brush sub-assembly proximal seat as said proximal drive member is advanced proximally through said distal drive motor lumen end opening and into said drive motor lumen to seat said proximal drive member in said drive motor lumen and retain said proximal drive member in engagement with said drive means located within said drive motor housing, said drive motor unit connector and said brush sub-assembly connector cooperatively allowing slidable rotation of said proximal seat with respect to said drive motor unit receptacle to a selected angular alignment of said brush sub-assembly to said drive motor unit while maintaining said proximal drive member seated in said drive motor lumen and in engagement with said drive means.
7 Assignments
0 Petitions
Accused Products
Abstract
A miniaturized obstruction treatment device, e.g., a resilient brush, particularly adapted for medical use formed at the distal end of an elongated brush drive shaft having a hollow lumen formed therein for introduction over a guidewire. The brush drive shaft is enclosed in the lumen of a brush delivery catheter, and the brush is adapted to be garaged in a distal end section of the brush delivery catheter lumen. A Y-connector and a brush sub-assembly connector are attached to the proximal end of the brush delivery catheter and form a brush sub-assembly with the brush drive shaft and brush. The Y-connector allows infusion of thrombolytic agents into the brush delivery catheter lumen for emission at the distal end opening thereof adjacent the brush. In use, the brush sub-assembly connector connects the brush sub-assembly with a drive motor unit connector of a drive motor unit. The drive motor unit receives the proximal end of the drive shaft and rotates it to rotate the brush bristles. The brush and brush drive shaft distal section are automatically extended out of the catheter lumen distal end opening when the sub-assembly connector and the drive motor unit connector positively lock together. Simultaneously, a drive hub of the brush drive shaft locks into a drive chuck of a drive motor unit to enable rotation of the drive shaft, and the drive shaft proximal end is seated in a dynamic seal that inhibits infiltration of blood and thrombolytic agent into the drive motor housing.
114 Citations
26 Claims
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1. A motor and brush assembly preferably for use in a medical procedure at a site within a patient'"'"'s body comprising:
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a brush sub-assembly comprising; an elongated, flexible, rotatable brush drive shaft extending between a proximal drive shaft end and a distal drive shaft end; a brush formed in a distal portion of the brush drive shaft; a proximal drive member formed in a proximal portion of said brush drive shaft; an elongated, flexible, brush delivery catheter extending between a proximal catheter end and a distal catheter end and formed with a catheter lumen extending between proximal and distal catheter lumen end openings at the proximal and distal catheter ends; fitting means for fitting a distal drive shaft section of said brush drive shaft within said catheter lumen and for extending said proximal drive member proximally of said proximal catheter lumen end opening for allowing rotation of said brush drive shaft with respect to said brush delivery catheter; and a brush sub-assembly connector having a proximal seat extending proximally from said fitting means through which said proximal drive member extends proximally; and a drive motor unit adapted to be coupled with said brush sub-assembly to effect rotation of said brush drive shaft further comprising; a drive motor housing containing a drive motor lumen extending between drive motor lumen proximal and distal end openings in said drive motor housing, said drive motor lumen dimensioned to receive said proximal drive member; drive means located within said drive motor housing for engaging said proximal drive member when it is inserted through said distal drive motor lumen end opening and into said drive motor lumen and for rotating said drive shaft; and a drive motor unit connector having a drive motor unit receptacle for engaging said brush sub-assembly proximal seat as said proximal drive member is advanced proximally through said distal drive motor lumen end opening and into said drive motor lumen to seat said proximal drive member in said drive motor lumen and retain said proximal drive member in engagement with said drive means located within said drive motor housing, said drive motor unit connector and said brush sub-assembly connector cooperatively allowing slidable rotation of said proximal seat with respect to said drive motor unit receptacle to a selected angular alignment of said brush sub-assembly to said drive motor unit while maintaining said proximal drive member seated in said drive motor lumen and in engagement with said drive means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A motor and obstruction treatment device assembly preferably for use in a medical procedure at a site within a patient'"'"'s body comprising:
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an obstruction treatment device sub-assembly comprising; an elongated, flexible, rotatable obstruction treatment device drive shaft extending between a proximal drive shaft end and a distal drive shaft end; an obstruction treatment device formed in a distal portion of the obstruction treatment device drive shaft; a proximal drive member formed in a proximal portion of said obstruction treatment device drive shaft; an elongated, flexible, obstruction treatment device delivery catheter extending between a proximal catheter end and a distal catheter end and formed with a catheter lumen extending between proximal and distal catheter lumen end openings at the proximal and distal catheter ends; fitting means for fitting a distal drive shaft section of said obstruction treatment device drive shaft within said catheter lumen and for extending said proximal drive member proximally of said proximal catheter lumen end opening for allowing rotation of said obstruction treatment device drive shaft with respect to said obstruction treatment device delivery catheter; and an obstruction treatment device sub-assembly connector having a proximal seat extending proximally from said fitting means through which said proximal drive member extends proximally; and a drive motor unit adapted to be coupled with said obstruction treatment device sub-assembly to effect rotation of said obstruction treatment device drive shaft further comprising; a drive motor housing containing a drive motor lumen extending between drive motor lumen proximal and distal end openings in said drive motor housing, said drive motor lumen dimensioned to receive said proximal drive member; drive means located within said drive motor housing for engaging said proximal drive member when it is inserted through said distal drive motor lumen end opening and into said drive motor lumen and for rotating said drive shaft; and a drive motor unit connector having a drive motor unit receptacle for engaging said obstruction treatment device sub-assembly proximal seat as said proximal drive member is advanced proximally through said distal drive motor lumen end opening and into said drive motor lumen to seat said proximal drive member in said drive motor lumen and retain said proximal drive member in engagement with said drive means located within said drive motor housing, said drive motor unit connector and said obstruction treatment device sub-assembly connector cooperatively allowing slidable rotation of said proximal seat with respect to said drive motor unit receptacle to a selected angular alignment of said obstruction treatment device sub-assembly to said drive motor unit while maintaining said proximal drive member seated in said drive motor lumen and in engagement with said drive means. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification