High pressure applicator

• US 7,572,263 B2
• Filed: 11/20/2002
• Issued: 08/11/2009
• Est. Priority Date: 04/01/1998
• Status: Expired due to Fees

• Current Assignee: NeuroTherm, Inc. (Abbott Laboratories Incorporated)
• Original Assignee: ArthroCare Corporation (Smith & Nephew PLC)
• Inventors: Preissman, Howard E.
• Primary Examiner(s): Robert; Eduardo C
• Assistant Examiner(s): HOFFMAN, MARY C
• Application Number:
  US10/301,454
• Publication Number:
  US 20030078589A1
• Time in Patent Office: 2,456 Days
• Field of Search: 606 92- 94, 604/211, 604/224, 604/235, 222/390
• US Class Current: 606/94
• CPC Class Codes: A61B 17/8816 characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
• CPC Class Codes: A61B 17/8819 characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula A61B17/8825 takes precedence
• 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: A61B 17/8833 Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• 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 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2002/4677 using a guide wire

Abstract

A pressure applicator for applying pressure to a flowable implant material, e.g., PMMA. A pressure applicator or driver includes a pair of columns which are engageable with one another, preferably by threads to generate a driving pressure. A handle is provided for the operator to grasp and steady the device as he turns the handle to apply pressure to the implantable material within the applicator. A luer-lock or other connecting device is provided for attaching the applicator to a cannula (or a connecting conduit that in turns connects with a cannula) that will deliver the implant material to the desired site. Pressures of about 1000-3000 psi may be generated by this device.

Claims

1. A high pressure applicator for driving the delivery of a flowable tissue implant material to a target site, the high pressure applicator comprising:

a body adapted to contain at least about 5 cc of the implant material, an elongate member comprising an enlarged end portion adapted to generate a high pressure within the body to drive the implant material from said body, wherein said body has a smooth inner wall portion and a radial access space, and wherein the body has an internally threaded member portion radially inset and axially spaced away from the smooth inner wall portion and adapted to threadingly interface with said elongate member for driving engagement therewith, thereby advancing said elongate member, and a removable section operable to be swung open or removed wherein removal or opening of the removable section opens the radial access space and exposes the smooth inner wall portion thereby allowing placement of the enlarged end section of the elongate member in the body from a radial direction and clear of the internally threaded member portion wherein the removable section detachably engages the body; and

a substantially noncompliant tubing having a proximal end detachably connectable to said body, said tubing having a length such that both said applicator body and a user'"'"'s hands may be distanced from a radiographic field covering the target site thereby reducing radiation exposure to the user.

2. The high pressure applicator of claim 1, wherein said removable section is hinged with respect to said body.

3. The high pressure applicator of claim 1, wherein said body comprises a syringe.

4. The high pressure applicator of claim 1, wherein said elongate member comprises threadings.

5. The high pressure applicator of claim 1, wherein said body further comprises a handle extending therefrom.

6. The high pressure applicator of claim 1, wherein said threaded member comprises a handle portion.

7. The high pressure applicator of claim 1, wherein said elongate member comprises a handle.

8. The high pressure applicator of claim 1, wherein second end of said elongate member comprises a sealing element.

9. The high pressure applicator of claim 8, wherein said sealing element is an O-ring.

10. The high pressure applicator of claim 1 further comprising a rigid cannula wherein said tubing comprises a distal end that is adapted to detachably connect with said rigid cannula.

14. The high pressure applicator of claim 1, wherein tubing is made of a polymer.

15. The high pressure applicator of claim 1, wherein tubing is made of PEEK.

16. The high pressure applicator of claim 1 wherein the elongate member is adapted to generate a high pressure of at least 1000 psi within the body.

17. The high pressure applicator of claim 1 wherein the elongate member is adapted to generate a high pressure of at least 1500 psi within the body.

18. The high pressure applicator of claim 1 wherein the elongate member is adapted to generate a high pressure of about 1000 psi to 3000 psi within the body.

11. A high pressure applicator kit for driving the delivery of a flowable tissue implant material to a vertebral body, the high pressure applicator kit comprising:

an applicator comprising a body adapted to contain at least about 5 cc of the implant material, an elongate member comprising an enlarged end portion adapted to generate a high pressure to drive the implant material from said body, wherein said body has a smooth inner wall portion and a radial access space, and wherein the body has an internally threaded member portion radially inset and axially spaced away from the smooth inner wall portion and adapted to threadingly interface with said elongate member for driving engagement therewith, thereby advancing said elongate member, and a removable section operable to be swung open or removed wherein removal or opening of the removable section opens the radial access space and exposes the smooth inner wall portion thereby allowing placement of the enlarged end section of the elongate member in the body from a radial direction and clear of the internally threaded member portion wherein the removable section detachably engages the body;

a substantially noncompliant tubing having a proximal end detachably connectable to said body,

a rigid cannula, said cannula having a proximal end detachably connectable to a distal end of said tubing;

a stylet receivable within said cannula, said cannula and stylet terminating in a bone-penetrating distal end; and

said tubing having a length such that said body is distanced from a radiographic field covering the target site.

12. The kit of claim 11 wherein said tubing is made of a polymer.

13. The kit of claim 12 wherein said tubing is made of PEEK.