Remotely-activated vertebroplasty injection device

• US 9,839,460 B2
• Filed: 02/19/2009
• Issued: 12/12/2017
• Est. Priority Date: 03/31/2003
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: DiMauro, Thomas M., Crombie, John, Pellegrino, Richard, Reynolds, Martin A.
• Primary Examiner(s): SEVILLA, CHRISTIAN ANTHONY
• Application Number:
  US12/388,563
• Publication Number:
  US 20090270872A1
• Time in Patent Office: 3,218 Days
• Field of Search: 606 93- 94, 606 92
• CPC Class Codes: A61B 17/8822 characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
• CPC Class Codes: A61F 2/4601 for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
• CPC Class Codes: A61F 2/48 Operating or control means, e.g. from outside the body, control of sphincters
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30523 by means of meshing gear teeth
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

A remotely-activated injection device for use in vertebroplasty is provided to inject a flourescent probe material into a patient. The injection device includes a pump defining an injection chamber having an exit opening; an actuator; and a cable having a first end coupled to the actuator, and a second end remotely engaging the pump. The actuator remotely controls the pump by responsive movement of the cable to thereby cause injection of a flourescent probe material from the injection chamber of the pump through the exit opening to the patient.

Claims

1. A handheld pumping system comprising:

an actuator;

a hydraulic piston driver;

a housing operatively connecting the actuator to the hydraulic piston driver;

a pump defining an injection chamber having an exit opening connectable to a bone needle, the injection chamber containing bone cement and including a piston operatively connected to the hydraulic piston driver so that actuation of the actuator results in the receiving of pressurized fluid by the hydraulic piston driver to selectively actuate the hydraulic piston driver to drive the piston to force said bone cement from the injection chamber through the exit opening;

a cement pressure relief device on the handheld pumping system for minimizing contact between pressurized cement and other tissue.

2. The system of claim 1, further comprising a handheld base supporting the actuator for the hydraulic driver.

3. The system of claim 2, further comprising a lever portion pivotally coupled to the handheld base for selectively actuating the hydraulic driver.

4. The system of claim 3, wherein the housing is semi-rigid and connects to the handheld base and the hydraulic driver is actuated through the semi-rigid housing.

5. A handheld pumping system comprising:

a hydraulic fluid for pressurization;

a chamber containing the hydraulic fluid;

an actuator for applying pressure to the hydraulic fluid;

a housing connecting the actuator to the chamber containing the hydraulic fluid;

a container of bone cement connected to said housing and receiving pressurized fluid to selectively force said bone cement from said container;

a pump defining an injection chamber having an exit opening connectable to a bone needle, the injection chamber containing bone cement and including a piston operatively connected to a hydraulic piston driver so that actuation of the actuator results in the receiving of pressurized fluid by the hydraulic piston driver to selectively actuate the hydraulic piston driver to drive the piston to force said bone cement from the injection chamber through the exit opening;

a cement pressure relief device on the handheld pumping system for minimizing contact between pressurized cement and other tissue.

6. The system of claim 5, further comprising a handheld base supporting the actuator for the hydraulic driver.

7. The system of claim 6, further comprising a lever portion pivotally coupled to the handheld base for selectively actuating the hydraulic driver.

8. The system of claim 7, wherein the housing is semi-rigid and connects to the handheld base and the hydraulic driver is actuated through the semi-rigid housing.