IN-JOINT SENSOR FOR A SURGICAL FLUID MANAGEMENT PUMP SYSTEM

• US 20130267894A1
• Filed: 03/14/2013
• Published: 10/10/2013
• Est. Priority Date: 04/05/2012
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Brady Woolford, Justin Smith
• Inventors: WOOLFORD, Brady, SMITH, Justin
• Granted Patent: US 9,492,071 B2
• Time in Patent Office: Days
• US Class Current: 604/67
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/126 provided with means for cleaning in-use
• CPC Class Codes: A61B 1/317 for bones or joints, e.g. osteoscopes, arthroscopes
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1662 for particular parts of the body
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 18/148 having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00815 measured by a thermistor
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61B 2218/007 Aspiration
• CPC Class Codes: A61M 1/72 Cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 3/0201 : Cassettes therefor

Abstract

An in-joint pump and control device comprising a pump and an in-joint sensor. The pump is configured to convey fluid to a body joint surgical site. The pump has an algorithm associated therewith to make calculations and to assist in controlling the operation of the pump. The in-joint sensor is operatively associated with the pump by at least a communication member. The in-joint sensor comprises a sheath, an integration member attached to the sheath, a pressure sensor connected to the integration member, and a temperature sensor adjacent the sheath. The pressure sensor is adapted to provide pressure information to the pump via the communication member. The temperature sensor is also adapted to provide temperature information to the pump via the communication member.

Claims

1. A sensing device comprising:

a sheath having a longitudinal axis, a proximal end, a distal end, and an outer wall defining an inner lumen extending substantially in the direction of the longitudinal axis;

an integration component attached to the sheath and having an attachment portion configured to interface with the sheath to maintain fluid seal, the sheath having a space therein to allow a static column of liquid to reside adjacent the integration component;

a thermal sensing device adjacent the outer wall of the sheath and terminating distally adjacent the distal end of the sheath, the thermal sensing device adapted to measure and relay the temperature of fluid in or adjacent a surgical site; and

a pressure sensing device located adjacent the integration component and configured to measure and relay information based on the pressure of the static column of liquid to be used to calculate and display the pressure at the surgical site.

2. The sensing device of claim 1, further comprising a sensor aperture located in or adjacent the integration component, the sensor aperture retaining the pressure sensor.

3. The sensing device of claim 2, wherein the thermal sensing device comprises a wire thermistor.

4. The sensing device of claim 3, and further comprising a shaft for receiving a portion of the thermal sensing device, at least a portion of the shaft being integrated with the outer wall of the sheath.

5. The sensing device of claim 1, wherein the thermal sensing device comprises thermal sensor attached to at least one fiber optic member.

6. The sensing device of claim 1, wherein the pressure sensing device comprises a peizoresistive pressure sensor.

7. The sensing device of claim 1, wherein the pressure sensing device comprises a pressure sensor utilizing fiber optics.

8. The sensing device of claim 1, wherein the pressure sensing device comprises an air-water pressure deflection sensor.

9. The sensing device of claim 1, wherein the temperature sensing device creates a temperature signal and relays the temperature signal for use in a pump control algorithm.

10. The sensing device of claim 9, wherein the pressure sensing device creates a pressure signal and relays the pressure signal for use in a pump control algorithm.

11. An in-joint pump and control device comprising:

a pump configured to convey fluid to a body joint surgical site, the pump having an algorithm associated therewith to make calculations and to assist in controlling the operation of the pump; and

an in-joint sensor operatively associated with the pump by at least a communication member, the in-joint sensor comprising a sheath, an integration member attached to the sheath, a pressure sensor connected to the integration member, and a temperature sensor adjacent the sheath,

the pressure sensor adapted to provide pressure information to the pump via the communication member, and the temperature sensor adapted to provide temperature information to the pump via the communication member.

12. The in-joint pump and control device of claim 11, wherein the communication member comprises a wireless transmitter.

13. The in-joint pump and control device of claim 11, wherein the sheath has a distal end, and at least a portion of the temperature sensor is positioned adjacent the distal end of the sheath.

14. The in-joint pump and control device of claim 11, wherein the algorithm uses information received from the communication path member.

15. An arthroscopic tubeset comprising:

a cannula having a wall defining an inner aperture and an outer wall surface, the cannula having a distal end;

a sheath attached to the outer wall surface of the cannula, the sheath defining an interior space and having a sheath end adjacent the cannula distal end;

a pressure sensor adjacent the sheath end;

a temperature sensor adjacent the sheath end; and

at least one fiber optic member attached to each of the pressure sensor and temperature sensor for relaying information to a controller, each fiber optic member partially housed within the sheath.

16. The arthroscopic tubeset according to claim 15, wherein the cannula is attached to in-flow tubing from a pump.

17. The arthroscopic tubeset according to claim 15, wherein the pressure sensor and the temperature sensor are disposed side-by-side with respect to each other in the interior space of the sheath.

18. The arthroscopic tubeset according to claim 15, wherein the pressure sensor has a diameter between about 120 microns and about 140 microns.

19. The arthroscopic tubeset according to claim 15, wherein the pressure sensor has a diameter between about 120 microns and about 140 microns.