Multiple lumen sensor attachment

• US 20050251144A1
• Filed: 05/04/2004
• Published: 11/10/2005
• Est. Priority Date: 05/04/2004
• Status: Active Grant

• Current Assignee: Integra Lifesciences Corporation (Integra LifeSciences Holdings Corporation)
• Original Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Inventors: Gorhan, Michael C., Wilson, Stephen F.
• Granted Patent: US 7,604,658 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 2017/3411 with a plurality of holes, e.g. holes in matrix arrangement
• CPC Class Codes: A61B 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments
• CPC Class Codes: A61B 2017/3449 whereby the instrument channels merge into one single channel
• CPC Class Codes: A61B 2017/3466 for simultaneous sealing of multiple instruments
• CPC Class Codes: A61B 2017/349 Trocar with thread on outside
• CPC Class Codes: A61B 2090/103 Cranial plugs for access to brain
• CPC Class Codes: A61B 5/031 Intracranial pressure
• CPC Class Codes: A61B 90/11 with guides for needles or instruments, e.g. arcuate slides or ball joints
• CPC Class Codes: A61M 2039/025 through bones or teeth, e.g. through the skull
• CPC Class Codes: A61M 2039/0264 with multiple inlets or multiple outlets
• CPC Class Codes: A61M 2039/0267 comprising sensors or electrical contacts
• CPC Class Codes: A61M 2210/0693 Brain, cerebrum
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053

Abstract

A cranial bolt secured to a skull of a patient includes a threaded portion and a lumen portion. Threaded portion has an inner surface forming a central passageway which extends throughout the threaded portion. The inner surface includes a connector mating with the lumen portion. The threaded portion has an outer surface having a plurality of threads for engaging a hole formed in the patient'"'"'s skull. The lumen portion includes a stem portion that enters the central passageway and engages the mating connector. A fluid tight seal is formed between the inner surface of the threaded portion and the stem portion. At least two lumens are disposed through the stem portion and the base portion. The lumens have a proximal end opening outside the skull and a distal end opening inside the skull. One embodiment includes sensor lumens diverging from the centerline and another allows lumen portion to rotate independent of threaded portion.

Claims

1. A cranial bolt to be secured to a skull of a patient, comprising:

a threaded portion having an inner surface forming a central passageway;

a mating connector disposed on the threaded portion;

said threaded portion further having an outer surface having a plurality of threads for engaging a hole formed in the skull to fixedly engage the threaded portion to the skull; and

a lumen portion having a base part and a stem part designed to enter the central passageway of the threaded portion and engage the mating connector, said base part disposed on one end of the stem part opposite the skull, and at least two lumens disposed through the stem part and the base part and wherein a proximal end of the at least two lumens opens outside the skull and a distal end of the at least two lumens opens inside the skull.

2. The cranial bolt of claim 1, wherein the at least two lumens include a drainage lumen and two sensor lumens disposed offset from a central axis of the lumen portion.

3. The cranial bolt of claim 1, further comprising a fluid tight seal between the inner surface of the threaded portion and the stem part of the lumen portion;

4. The cranial bolt of claim 1, further comprising a floating collar disposed between the stem part and the base part, the floating collar allowing the base part to rotate relative to the stem part.

5. The cranial bolt of claim 1, wherein the plurality of threads on the outer surface of the threaded portion are self-tapping threads.

6. The cranial bolt of claim 1, further comprising:

a wing gap disposed on a top surface of the threaded portion, outside the skull;

a wing portion disposed on an outer surface of the base part, the wing portion engaging the wing gap when the stem part engages the mating connector; and

wherein when the base part is rotated, the lumens are rotated with respect to the threaded portion.

7. The cranial bolt of claim 1, wherein the mating connector is a plurality of threads.

8. The cranial bolt of claim 7, wherein the threaded portion and the mating connector are threaded in the same direction.

9. The cranial bolt of claim 7, wherein the threaded portion and the mating connector are threaded in the opposite direction.

10. The cranial bolt of claim 3, wherein the fluid tight seal comprises an o-ring.

11. The cranial bolt of claim 1, wherein the distal ends of the at least two lumens diverge by an angle from a center axis of the lumen portion.

12. The cranial bolt of claim 11, wherein the proximal ends of the at least two lumens diverge by an angle from a center axis of the lumen portion.

13. The cranial bolt of claim 2, wherein the drainage lumen is disposed along a centerline of the lumen portion and the proximal ends of the sensor lumens diverge by an angle from the center axis.

14. The cranial bolt of claim 1, wherein the at least two lumens include a drainage lumen aligned to a central axis of the lumen portion.

15. The cranial bolt of claim 1, wherein the at least two lumens include a drainage lumen disposed offset from a central axis of the lumen portion and a sensor lumen disposed offset from a central axis of the lumen portion.

16. The cranial bolt of claim 1, wherein the mating connector is at least one of a friction fit plug, a plurality of threads and a bayonet lock.

17. An insertion tool for engaging a threaded portion of a cranial bolt and providing mechanical advantage to increase an amount of torque applied to the threaded portion while inserting the threaded portion into the skull, said insertion tool comprising:

a handle; and

an extending arm, extending from the handle to engage the bolt, the extension arm having recesses to removeably engage wing gaps from a top surface of the threaded portion of the bolt.

18. A method of securing a cranial bolt to a skull of a patient, comprising the steps of:

drilling a hole in the skull;

inserting a self-tapping threaded portion into the hole, wherein the threaded portion includes an inner surface forming a central passageway, a mating connector supported on the inner surface, and an outer surface having a plurality of threads for engaging the hole; and

engaging a lumen portion to the threaded portion, wherein the lumen portion includes a stem part entering the central passageway and engaging the mating connector, a base part of the lumen portion disposed on one end of the stem part opposite the skull, and at least two lumens disposed through the stem part and the base part and wherein a proximal end of the at least two lumens opens outside the skull and a distal end of the at least two lumens opens inside the skull.

19. The method of claim 18, wherein the engaging step is performed after the inserting step.

20. The method of claim 18, wherein the engaging step traps an o-ring between the inner surface of the threaded portion and the stem part to form a fluid tight seal

21. The method of claim 18, wherein the engaging step is performed before the inserting step.

22. The method of claim 18, further comprising:

removing the lumen portion; and

engaging a second lumen portion.

23. The method of claim 18, wherein the lumen portion is rotatably engaged to the threaded portion.

24. The method of claim 18, further comprising:

prior to the inserting step, engaging an insertion tool with the threaded portion to increase the torque applied to the threaded portion during the insertion step; and

after the inserting step, removing the insertion tool.