Cannulated sensing device

• US 7,666,165 B2
• Filed: 07/06/2006
• Issued: 02/23/2010
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Nycz, Jeffrey H., Lyons, Christopher M.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Eisenberg; Rebecca E
• Application Number:
  US11/482,081
• Publication Number:
  US 20080021398A1
• Time in Patent Office: 1,328 Days
• Field of Search: 604 65- 67, 604/167.01
• US Class Current: 604/164.01
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2017/00026 Conductivity or impedance, e.g. of tissue
• CPC Class Codes: A61B 2017/00106 ultrasonic
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 90/06 Measuring instruments not otherwise provided for

Abstract

A cannulated sensing device is disclosed and can include a housing that can have a proximal end and a distal end. A cannula can extend from the proximal end of the housing to the distal end of the housing. Further, a sensor can be attached to the distal end of the housing.

Claims

1. A cannulated sensing device, comprising:

a housing having a proximal end and a distal end;

a cannula extending along a longitudinal axis of the housing from the proximal end of the housing to the distal end of the housing, wherein the cannula comprises a lumen extending along the longitudinal axis and configured to receive a needle of an injecting device;

a first spring loaded contact extending into the lumen, wherein the first spring-loaded contact is configured to contact the needle when the needle is inserted in the lumen;

a second spring loaded contact extending into the lumen, wherein the second spring loaded contact is configured to contact the needle when the needle is within the lumen and wherein the second spring loaded contact is configured to contact the first spring loaded contact when the needle is not within the lumen; and

a sensor attached to the distal end of the housing, wherein the sensor comprises an annular shape having a central opening, and the sensor is coaxial with the cannula about the longitudinal axis and wherein the sensor of the cannulated sensing device is activated while the first spring-loaded contact is in electrical contact with the second spring loaded contact.

2. The cannulated sensing device of claim 1, further comprising a microprocessor in communication with the sensor.

3. The cannulated sensing device of claim 2, further comprising a power supply connected to the microprocessor and the sensor.

4. The cannulated sensing device of claim 3, further comprising a transmitter attached to the distal end of the housing, wherein the transmitter is in communication with the microprocessor.

5. The cannulated sensing device of claim 1, further comprising a display device configured to indicate whether the cannulated sensing device senses hard tissue, soft tissue, fluid, or a combination thereof.

6. The cannulated sensing device of claim 1, further comprising an annunciator configured to indicate whether the cannulated sensing device senses hard tissue, soft tissue, fluid, or a combination thereof.

7. The cannulated sensing device of claim 1, wherein the sensor of the cannulated sensing device is deactivated while the first spring-loaded contact is not in electrical contact with the second spring loaded contact.

8. The cannulated sensing device of claim 7, wherein a sensor incorporated into the needle is activated when the needle contacts the first spring loaded contact, the second spring loaded contact, or a combination thereof.

9. A cannulated sensing device, comprising:

a housing having a proximal end and a distal end;

a cannula extending along a longitudinal axis of the housing from the proximal end of the housing to the distal end of the housing, wherein the cannula comprises a lumen extending along the longitudinal axis configured to receive a needle of an injecting device;

a sensor attached to the distal end of the housing;

a first spring loaded contact extending into the lumen; and

a second spring loaded contact extending into the lumen and in contact with the first spring loaded contact, wherein the first spring loaded contact, second spring loaded contact, and sensor form a circuit, when the first spring loaded contact is in electrical contact with the second spring loaded contact.

10. The cannulated sensing device of claim 9, wherein the sensor of the cannulated sensing device is activated while the first spring-loaded contact is in electrical contact with the second spring loaded contact.

11. The cannulated sensing device of claim 10, wherein the sensor of the cannulated sensing device is deactivated while the first spring-loaded contact is separated from the second spring loaded contact.

12. The cannulated sensing device of claim 9, wherein a sensor incorporated into the needle is activated when the needle contacts the first spring loaded contact, the second spring loaded contact, or a combination thereof.