Instrument with a covered bore for subcutaneous implantation

• US 8,348,882 B2
• Filed: 07/14/2010
• Issued: 01/08/2013
• Est. Priority Date: 08/24/2000
• Status: Expired due to Fees

• Current Assignee: Cardiac Science Operating Company (Cardica Incorporated)
• Original Assignee: Cardiac Science Operating Company (Cardica Incorporated)
• Inventors: Bardy, Gust H.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): Price, Nathan R
• Application Number:
  US12/836,535
• Publication Number:
  US 20100324579A1
• Time in Patent Office: 909 Days
• Field of Search: 604 57- 64, 604/117, 604/158, 604/164.01, 604/164.04, 604/164.06, 604/164.08, 604/274, 600/432, 600/567
• US Class Current: 604/57
• 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 for use in subcutaneous implantation, comprising:

an incising body comprising;

an incising shaft open on both distal and proximal ends with a non-circular bore being defined along a longitudinal axis, the bore of the incising shaft sized to enclose an implant, the incising shaft comprising a distal end having a beveled surface transversely formed beginning on a top surface and ending on a bottom surface that has a sharpened bottom edge; and

a syringe body open on both distal and proximal ends with a non-circular bore being defined along a longitudinal axis, the bore of the syringe body also sized to enclose the implant, the syringe body being fixedly attached to a proximal end of the incising shaft;

a solid cover sized to cover the open distal end of the incising shaft, the solid cover pivotably attached to the top surface of the distal end of the incising shaft and extending down to the bottom edge of the distal end of the incising shaft, the solid cover disposed to remain closed absent distal force applied from within the bore of the incising shaft; and

a plunger slideably contained within the bores of the incising shaft and the syringe body.

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

a tensioner configured to apply downward force to the solid cover and disposed to resist the distal force applied to the solid cover from within the bore of the incising shaft.

3. An instrument according to claim 1, wherein the solid cover pivots on at least one of a hinge, and a pin provided on the distal end of the top edge of the incising shaft.

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

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

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

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

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

7. An instrument for use in subcutaneous implantation, comprising:

an incising body comprising;

an incising shaft open on both distal and proximal ends with a non-circular bore being defined along a longitudinal axis, the bore of the incising shaft sized to enclose an implant, the incising shaft comprising a distal end having a beveled surface transversely formed beginning on a top surface and ending on a bottom surface that has a sharpened bottom edge;

a solid cover formed as an integral extension of the top surface of the distal end of the incising shaft, the solid cover extending down to the bottom edge of the distal end of the incising shaft and sized to cover the open distal end of the incising shaft, the solid cover disposed to pivot on a crease transversely formed in the top surface and remain closed absent distal force applied from within the bore of the incising shaft; and

a syringe body open on both distal and proximal ends with a non-circular bore being defined along a longitudinal axis, the bore of the syringe body also sized to enclose the implant, the syringe body being fixedly attached to a proximal end of the incising shaft; and

a plunger slideably contained within the bores of the incising shaft and the syringe body.

8. An instrument according to claim 7, wherein the solid cover comprises one of a flat, concave, and convex side profile.

9. An instrument according to claim 7, further comprising:

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

10. An instrument according to claim 7, further comprising:

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

11. An instrument for use in subcutaneous implantation, comprising:

an incising body, comprising;

an incising shaft defining a cavity along a longitudinal axis of the incising shaft and open on a distal end and partially open on a proximal end, the incising shaft comprising a distal end having a beveled surface transversely formed beginning on a top surface and ending on a bottom surface that has a sharpened bottom edge, the cavity sized to enclose an implant; and

a syringe body defining a bore that is shorter than the incising shaft in length and narrower than both the cavity and the incising shaft in width and height along a longitudinal axis of the syringe body and open on both distal and proximal ends, a distal end of the syringe body being affixed to a proximal end of the incising shaft with the bore aligned with the partially open proximal end of the cavity;

a plunger comprising a horizontal flat surface sized to fit within a width of the cavity, the plunger being affixed to a distal end of a plunger shaft that is sized to slide longitudinally within the bore of the incising shaft; and

a solid cover sized to cover the open distal end of the incising shaft, the solid cover pivotably attached to a top edge of the distal end of the incising shaft and extending down to the bottom edge of the distal end of the incising shaft, the solid cover disposed to remain closed absent distal force applied from within the cavity.

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

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

13. An instrument according to claim 11, wherein the solid cover comprises one of a flat, concave, and convex side profile.

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

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

14. An instrument for use in subcutaneous implantation, comprising:

an incising body, comprising;

an incising shaft defining a cavity along a longitudinal axis of the incising shaft and cavity along a longitudinal axis of the incising shaft and open on a distal end and partially open on a proximal end, the incising shaft comprising a distal end having a beveled surface transversely formed beginning on a top surface and ending on a bottom surface, a pointed cutting edge formed as an integral extension of the bottom surface of the distal end of the incising shaft has a sharpened bottom edge and a recess defined on the top surface of the pointed cutting edge, the cavity sized to enclose an implant; and

a syringe body defining a bore that is shorter than the incising shaft in length and narrower than both the cavity and the incising shaft in width and height along a longitudinal axis of the syringe body and open on both distal and proximal ends, a distal end of the syringe body being affixed to a proximal end of the incising shaft with the bore aligned with the partially open proximal end of the cavity;

a plunger comprising a horizontal flat surface sized to fit within a width of the cavity, the plunger being affixed to a distal end of a plunger shaft that is sized to slide longitudinally within the bore of the incising shaft; and

a solid cover sized to cover the open distal end of the incising shaft, the solid cover disposed to remain closed absent distal force applied from within the cavity, the solid cover pivotably attached to a top edge of the distal end of the incising shaft and extending down to the bottom edge of the distal end of the incising shaft, the solid cover further comprising a lip extending from the distal edge of the solid cover, the lip angled coplanar to the top surface of the pointed cutting edge and shaped to conformably fit within the recess, the lip disposed to maintain a seal between the open distal end of the incising shaft and the recess.

15. An instrument according to claim 14, further comprising:

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

16. An instrument according to claim 14, further comprising:

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

17. An instrument according to claim 14, wherein the solid cover comprises one of a flat, concave, and convex side profile.