Instrument With A Covered Bore For Subcutaneous Implantation

• US 20100324579A1
• Filed: 07/14/2010
• Published: 12/23/2010
• Est. Priority Date: 08/24/2000
• Status: Active Grant

• Current Assignee: Cardiac Science Operating Company (Cardica Incorporated)
• Original Assignee: Gust H. Bardy
• Inventors: Bardy, Gust H.
• Granted Patent: US 8,348,882 B2
• Time in Patent Office: Days
• US Class Current: 606/167
• CPC Class Codes: A61B 2560/063 Devices specially adapted for delivering implantable medical measuring apparatus
• CPC Class Codes: A61M 37/0069 Devices for implanting pellets, e.g. markers or solid medicaments for introducing of radioactive sources for interstitial radiation therapy, i.e. brachytherapy A61N5/1027

Abstract

An instrument with a covered bore for subcutaneous implantation is provided. An incising body defines a non-circular coaxial bore and includes a sharpened cutting edge that extends from a bottom distal end beyond the opening of the coaxial bore and an attachment point at a top distal end. A plunger is non-fixedly contained within the coaxial bore and slides longitudinally therein. A cover is pivotally attached at the attachment point and extends down to the bottom distal end and, when closed, the cover encloses the opening proximal to the cutting edge.

Claims

1. An instrument with a covered bore for subcutaneous implantation, comprising:

an incising body defining a non-circular coaxial bore and comprising a sharpened cutting edge extending from a bottom distal end beyond the opening of the coaxial bore and an attachment point at a top distal end;

a plunger non-fixedly contained within the coaxial bore and sliding longitudinally therein; and

a cover pivotally attached at the attachment point and extending down to the bottom distal end, when closed, the cover enclosing the opening proximal to the cutting edge.

2. An instrument according to claim 1, wherein the cover, when closed, sits on the distal end of the incising body at an angle at least equal to an expected angle of insertion of the incising body.

3. An instrument according to claim 1, further comprising:

a tension means integral to the attachment point and maintaining the cover in a closed position.

4. An instrument according to claim 1, wherein the cover pivots on at least one of a hinge, a pin, a strap, a crease, and a joint.

5. An instrument according to claim 1, wherein the perimeter of the cover matches the outer dimensions of the distal end of the incising body.

6. An instrument according to claim 1, comprising one of an incising body assembly comprising the incising body and the cover integrally formed as one component and a two-part assembly comprising the incising body and the cover as separate components.

7. An instrument according to claim 1, wherein a bottom surface of the cover matches the shape of the distal end of the incising body.

8. An instrument according to claim 1, further comprising:

a lip extending from the distal edge of the cover and angled coplanar to a top surface of the cutting edge.

9. An instrument according to claim 8, further comprising:

a margin on the top surface of the cutting edge that is shaped conformably to the lip and defining a recess, wherein the top surface of the cutting edge and the lip are flush.

10. An instrument according to claim 1, wherein the cover comprises one of a flat, concave, and convex side profile.

11. An instrument according to claim 1, further comprising:

a stop extending upwards from a top surface of the distal end of the incising body and adjacent to a proximal end of the cover.

12. An instrument according to claim 1, further comprising:

one or more notches on at least one outer surface of the incising body.

13. An instrument with a hinged cover for subcutaneous implantation, comprising:

an incising body defining a non-circular coaxial bore and comprising a sharpened cutting edge extending from a bottom distal end beyond the opening of the coaxial bore and an attachment point at a top distal end;

a plunger non-fixedly contained within the coaxial bore and sliding longitudinally therein; and

a cover pivotally attached by a hinge at the attachment point and extending down to the bottom distal end, when closed, the cover enclosing the opening proximal to the cutting edge.

14. An instrument according to claim 13, wherein the cover, when closed, sits on the distal end of the incising body at an angle at least equal to an expected angle of insertion of the incising body.

15. An instrument according to claim 13, further comprising:

a tension means integral to the hinge and maintaining the cover in a closed position.

16. An instrument according to claim 13, wherein a bottom surface of the cover matches the shape of the distal end of the incising body.

17. An instrument with a unitary cover for subcutaneous implantation, comprising:

an incising assembly, comprising;

an incising body defining a non-circular coaxial bore and comprising a sharpened cutting edge extending from a bottom distal end beyond the opening of the coaxial bore and an attachment point at a top distal end; and

a cover integrally formed with the incising body and pivotally attached at the attachment point and extending down to the bottom distal end, when closed, the cover enclosing the opening proximal to the cutting edge; and

a plunger non-fixedly contained within the coaxial bore and sliding longitudinally therein.

18. An instrument according to claim 17, wherein the cover, when closed, sits on the distal end of the incising body at an angle at least equal to an expected angle of insertion of the incising body.

19. An instrument according to claim 17, further comprising:

a lip extending from the distal edge of the cover and angled coplanar to a top surface of the cutting edge.

20. An instrument according to claim 17, wherein the cover comprises one of a flat, concave, and convex side profile.

21. An instrument with a captive plunger for subcutaneous implantation, comprising:

an incising body, comprising;

an incising shaft defining a cavity located along a longitudinal axis and comprising a sharpened cutting edge extending from a bottom distal end beyond the opening of the cavity and an attachment point at a top distal end; and

a syringe body defining a bore extending along the longitudinal axis and comprising a circumference smaller than the cavity, the syringe body positioned on a proximal end of the incising shaft with the bore aligned with a portion of the cavity;

a plunger assembly comprising a plunger shaft sized to fit within the syringe body and affixed on one end to a plunger comprising a captive member and that is sized to fit in the cavity; and

a cover pivotally attached at the attachment point and extending down to the bottom distal end, when closed, the cover enclosing the opening of the cavity proximal to the cutting edge.

22. An instrument according to claim 21, wherein the cover, when closed, sits on the distal end of the incising shaft at an angle at least equal to an expected angle of insertion of the incising body.

23. An instrument according to claim 21, further comprising:

a stop extending upwards from a top surface of the distal end of the incising body and adjacent to a proximal end of the cover.

24. An instrument according to claim 21, further comprising:

one or more notches on at least one outer surface of the incising body.