Remotely-activated vertebroplasty injection device

Patent metadata

Field	Value
Publication number	US-10485597-B2
Application number	US-201715816103-A
Country	US
Kind code	B2
Filing date	Nov 17, 2017
Priority date	Mar 31, 2003
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A remotely-activated injection device for use in vertebroplasty is provided to inject a fluorescent 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 fluorescent probe material from the injection chamber of the pump through the exit opening to the patient.

First claim

What is claimed is:

1. A remotely-activated injection device, comprising:
an injection pump having an injection chamber, an exit opening, and a piston operable to apply a force against a bone cement so as to push the bone cement from the injection chamber through the exit opening;
a remote actuator operatively coupled to the injection pump, the actuator operable to drive the piston at a sufficient distance away from the injection pump so as to allow a clinician to operate the injection pump safely outside of a range of an imaging field directed in the vicinity of the injection pump;
a pressure relief device on the remotely-activated injection device for minimizing contact between a pressurized bone cement and other tissue.

2. The remotely-activated injection device of claim 1 , further comprising a hollow bone needle extending from the exit opening.

3. The remotely-activated injection device of claim 1 , further comprising a housing operatively connecting the remote actuator to the injection pump.

4. The remotely activated injection device of claim 3 , further comprising a cable inside the housing, wherein the remote actuator actuates the cable so as to operate the piston.

5. The remotely activated injection device of claim 3 , further comprising a hydraulic fluid inside the housing, wherein the remote actuator actuates the hydraulic fluid so as to operate the piston.

6. The remotely activated injection device of claim 1 , wherein the remote actuator includes a handheld base and a lever pivotally couple to the handheld base.

7. The remotely-activated injection device of claim 1 , further comprising an anchor configured to anchor the injection pump to a patient.

8. The remotely-activated injection device of claim 7 , further comprising a bone cement loaded into the injection pump.

9. The remotely-activated injection device of claim 8 , wherein the bone cement is a PMMA cement.

10. A method for remote injection of bone cement using the remotely-activated injection device of claim 1 , comprising:
loading a bone cement in the injection chamber;
operatively connecting the exit opening to a patient's bone; and
actuating the remote actuator so as to drive the bone cement into a patient's bone.

11. The method of claim 10 , further comprising directing an imaging apparatus toward a patient's bone that will receive the bone cement and wherein actuating the remote actuator takes place outside of a field of the imaging apparatus.

12. The method of claim 11 , where the patient's bone that will receive the bone cement is a vertebral body.

13. The method of claim 12 , wherein a modality of the imaging apparatus is fluoroscopy and actuating the remote actuator takes place outside of a harmful fluoro field.

14. The method of claim 10 , further comprising anchoring the injection chamber to the patient.

Assignees

• Depuy Synthes Products Inc

Inventors

• Dimauro Thomas M
• Crombie John
• Pellegrino Richard
• Reynolds Martin A

Classifications

• A61F2002/3008

  radio-opaque, e.g. radio-opaque markers · CPC title

• A61F2/4601

  for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity · CPC title

• A61F2220/0025

  Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements · CPC title

• A61B17/8822 Primary

  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 title

• A61F2002/30523

  by means of meshing gear teeth · CPC title