Powered drivers, intraosseous devices and methods to access bone marrow

Patent metadata

Field	Value
Publication number	US-10973532-B2
Application number	US-202017029341-A
Country	US
Kind code	B2
Filing date	Sep 23, 2020
Priority date	May 31, 2002
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A method for penetrating bone and accessing bone marrow is provided. The method may include inserting a penetrator assembly with a powered drill to penetrate the bone into the bone marrow. The penetrator assembly may include a trocar having a stylet. The penetrator assembly may also include an outer penetrator having a hollow cannula and a luer lock attachment. The powered drill may include a housing enclosing a motor and a power supply and associated circuitry. The powered drill may also include a connector receptacle for receiving a penetrator assembly connector of the penetrator assembly. The connector receptacle may releasably lock the penetrator assembly connector into place with the powered drill. The power supply may include a rechargeable battery within the housing for supplying power to the motor. A battery indicator may be provided to indicate a level of the battery.

First claim

What is claimed is:

1. A method for penetrating bone and accessing bone marrow, comprising:
inserting a penetrator assembly with a powered drill to penetrate the bone into the bone marrow, the penetrator assembly comprising:
a trocar including a stylet and a first connector forming
a female connecting piece at a first end of the first connector, and
a penetrator assembly connector at a second end of the first connector opposite to the first end of the first connector; and

an outer penetrator including a hollow cannula and a second connector, the second connector forming a male connecting piece complementary to the female connecting piece on the first connector of the trocar, the hollow cannula configured to receive the stylet of the trocar, and the female connecting piece of the trocar configured to engage the male connecting piece of the outer penetrator;

the powered drill comprising a housing defining a handle configured to be sized and contoured to fit the hand of an operator of the drill, the housing enclosing a motor and a power supply and associated circuitry to power the motor, the housing further including an on/off switch connected to the power supply and operable to activate the motor to rotate the penetrator assembly when said penetrator assembly is releasably attached to the powered drill;
the powered drill further comprising a connector receptacle, the connector receptacle receiving the penetrator assembly connector of the penetrator assembly, and the connector receptacle releasably locking the penetrator assembly connector into place with the powered drill;
wherein the outer penetrator further comprises a luer lock attachment on the second connector of the outer penetrator;
wherein the power supply comprises a battery disposed within the housing and configured to supply power to the motor;
the powered drill further including a battery indicator operable to indicate a level of the battery;
the method further comprising, after inserting the penetrator assembly into the bone marrow, detaching the powered drill from the penetrator assembly,
removing the trocar from the outer penetrator, and
attaching an adapter to the luer lock attachment on the outer penetrator to convey medication or fluid to the bone marrow.

2. The method according to claim 1 , wherein the adapter is a right angle connector which connects a tubing to the outer penetrator.

3. The method according to claim 1 , wherein the battery is a rechargeable battery and the handle further comprises a charging contact and associated charging circuitry operable to charge the rechargeable battery.

4. The method according to claim 3 , wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the rechargeable battery.

5. The method according to claim 4 , wherein the rechargeable battery comprises a lithium battery.

6. The method according to claim 1 , wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the battery.

7. The method according to claim 1 , wherein the hollow cannula comprises a cutting tip, and the cutting tip of the hollow cannula and a tip of the stylet are operable to penetrate bone marrow as a single drilling unit.

8. The method according to claim 7 , further comprising a magnetic connection to releasably lock the penetrator assembly connector into place with the powered drill.

9. The method according to claim 7 , wherein the outer penetrator and the stylet are ground together as one unit during a manufacturing process.

10. The method according to claim 7 , wherein the battery is a rechargeable battery and the handle further comprises a charging contact and associated charging circuitry operable to charge the rechargeable battery.

11. The method according to claim 10 , wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the rechargeable battery.

12. The method according to claim 7 , wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the battery.

13. The method according to claim 1 , further comprising a magnetic connection to releasably lock the penetrator assembly connector into place with the powered drill.

14. The method according to claim 1 , wherein the outer penetrator further comprises a flange operable to abut skin of a patient during an insertion procedure for stabilizing the penetrator assembly.

15. The method according to claim 1 , wherein the battery is a rechargeable battery and the handle further comprises a charging contact and associated charging circuitry operable to charge the rechargeable battery,
wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the rechargeable battery,
wherein the hollow cannula comprises a cutting tip, and the cutting tip of the hollow cannula and a tip of the stylet are operable to penetrate bone marrow as a single drilling unit, and
wherein the outer penetrator further comprises a flange operable to abut skin of a patient during an insertion procedure for stabilizing the penetrator assembly.

16. The method according to claim 1 , wherein the battery is a rechargeable battery and the handle further comprises a charging contact and associated charging circuitry operable to charge the rechargeable battery,
wherein the battery indicator further comprises a plurality of lights operable to indicate a status of the rechargeable battery,
wherein the hollow cannula comprises a cutting tip, and the cutting tip of the hollow cannula and a tip of the stylet are operable to penetrate bone marrow as a single drilling unit, and
further comprising a magnetic connection to releasably lock the penetrator assembly connector into place with the powered drill.

17. The method according to claim 1 , wherein the male connecting piece comprises a connecting piece locking mechanism configured to lock into position on the female connecting piece.

18. The method according to claim 1 , wherein the on/off switch is disposed on an outer surface of the housing and proximate to a first end of the housing on which the connector receptacle is provided.

Assignees

• Teleflex Life Sciences Ltd

Inventors

• Miller Larry J
• Bolleter David S
• Titkemeyer Robert W
• Schwimmer Charles M

Classifications

• A61B17/1628 Primary

  Motors; Power supplies · CPC title

• A61B2090/0801

  Prevention of accidental cutting or pricking · CPC title

• A61B2017/3492

  against the outside of the body · CPC title

• A61B17/3494

  with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors (for the peridural space A61B17/3401) · CPC title

• A61B17/1622

  Drill handpieces (A61B17/1626, A61B17/1628 take precedence) · CPC title