Devices and methods using an expandable body with internal restraint for compressing cancellous bone

• US 20040225296A1
• Filed: 06/08/2004
• Published: 11/11/2004
• Est. Priority Date: 01/26/1994
• Status: Active Grant

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated
• Inventors: Scholten, Arie, Talmadge, Karen D., Reiley, Mark A., Reiss, Paul, Ico, Cesar
• Granted Patent: US 7,241,303 B2
• Time in Patent Office: Days
• US Class Current: 606/90
• CPC Class Codes: A61B 10/025 for taking bone, bone marrow or cartilage samples
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/7097 Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants disc prostheses made of inflatable chambers or pockets filled with fluid A61F2/441; replacing the nucleus pulposus A61F2002/444
• CPC Class Codes: A61B 17/72 Intramedullary pins, nails or other devices A61B17/744 takes precedence
• CPC Class Codes: A61B 17/7275 with expanding cylindrical parts
• CPC Class Codes: A61B 17/8805 for introducing fluid filler into bone or extracting it A61B17/7097, A61B17/8833 take precedence
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 17/8866 for gripping or pushing bones, e.g. approximators joint distractors A61B17/025
• CPC Class Codes: A61B 2010/0258 Marrow samples
• CPC Class Codes: A61B 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61B 2050/0065 Peelable cover
• CPC Class Codes: A61B 2050/3015 transparent
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61B 90/94 coded with symbols, e.g. text
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/2846 : Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006
• CPC Class Codes: A61F 2/3601 : for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices non-prosthetic internal fixation devices for the femoral head or neck A61B17/74
• CPC Class Codes: A61F 2/389 : Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2/44 : for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/441 : made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• 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 2/4611 : of spinal prostheses
• CPC Class Codes: A61F 2002/2817 : Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
• CPC Class Codes: A61F 2002/2825 : Femur
• CPC Class Codes: A61F 2002/2828 : Femoral head
• CPC Class Codes: A61F 2002/2832 : Femoral neck
• CPC Class Codes: A61F 2002/2835 : Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/2853 : Humerus
• CPC Class Codes: A61F 2002/2871 : Radius
• CPC Class Codes: A61F 2002/2892 : Tibia
• CPC Class Codes: A61F 2002/30113 : circular
• CPC Class Codes: A61F 2002/30115 : circular-O-shaped
• CPC Class Codes: A61F 2002/30125 : elliptical or oval
• CPC Class Codes: A61F 2002/30131 : horseshoe- or crescent- or C-shaped or U-shaped
• CPC Class Codes: A61F 2002/30133 : kidney-shaped or bean-shaped
• CPC Class Codes: A61F 2002/302 : toroidal, e.g. rings
• CPC Class Codes: A61F 2002/30225 : Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30228 : Cylinders of elliptical or oval basis
• CPC Class Codes: A61F 2002/30242 : spherical
• CPC Class Codes: A61F 2002/30245 : Partial spheres
• CPC Class Codes: A61F 2002/30253 : ellipsoidal or ovoid
• CPC Class Codes: A61F 2002/30285 : rugby-ball-shaped
• CPC Class Codes: A61F 2002/30288 : bottle-shaped
• CPC Class Codes: A61F 2002/30308 : banana-shaped
• CPC Class Codes: A61F 2002/30313 : pear-shaped
• CPC Class Codes: A61F 2002/30448 : using adhesives
• CPC Class Codes: A61F 2002/30462 : retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2002/30581 : having a pocket filled with fluid, e.g. liquid
• CPC Class Codes: A61F 2002/30586 : having two or more inflatable pockets or chambers
• CPC Class Codes: A61F 2002/30599 : stackable
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/30686 : Devices for removing particulate debris from prosthetic joints
• CPC Class Codes: A61F 2002/30909 : Nets
• CPC Class Codes: A61F 2002/3611 : Heads or epiphyseal parts of femur
• CPC Class Codes: A61F 2002/3625 : Necks
• CPC Class Codes: A61F 2002/4062 : Proximal or metaphyseal parts of shafts
• CPC Class Codes: A61F 2002/4217 : Calcaneum or calcaneus or heel bone
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4685 : by means of vacuum
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2220/0075 : sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0008 : elliptical or oval
• CPC Class Codes: A61F 2230/0013 : Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0015 : Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2230/0063 : Three-dimensional shapes
• CPC Class Codes: A61F 2230/0065 : toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0071 : spherical
• CPC Class Codes: A61F 2230/0076 : ellipsoidal or ovoid
• CPC Class Codes: A61F 2250/0063 : Nested prosthetic parts
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00353 : Bone cement, e.g. polymethylmethacrylate or PMMA
• CPC Class Codes: A61F 2310/0097 : Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
• CPC Class Codes: A61M 2025/1059 : having different inflatable sections mainly depending on the response to the inflation pressure, e.g. due to different material properties with different compartments A61M2025/1072
• CPC Class Codes: A61M 2025/1072 : having balloons with two or more compartments
• CPC Class Codes: A61M 2210/02 : Bones
• CPC Class Codes: A61M 2210/1003 : Spinal column
• CPC Class Codes: A61M 25/10 : Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1002 : characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/1006 : Balloons formed between concentric tubes
• CPC Class Codes: A61M 25/1009 : Balloons anchored to a disc or plate
• CPC Class Codes: A61M 25/1011 : Multiple balloon catheters
• CPC Class Codes: A61M 29/02 : Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

Devices and methods compress cancellous bone. In one arrangement, the devices and methods make use of an expandable body that includes an internal restraint coupled to the body. The internal restraint directs expansion of the body. In one arrangement, a method for treating bone inserts the device having the internal restraint inside bone and causes directed expansion of the body in cancellous bone. Cancellous bone is compacted by the directed expansion.

Claims

1. A device capable of compressing cancellous bone comprising

an expandable body including an internal restraint coupled to the body which directs expansion of the body,

wherein the internal restraint includes an internal membrane.

2. A device according to claim 1

wherein the expandable body includes an elongated axis, and

wherein the internal restraint includes an internal membrane that extends transversely of the elongated axis between opposing interior side surfaces of the expandable structure.

3. A device according to claim 1

wherein the expandable body includes an elongated axis, and

wherein the internal restraint includes/n internal membrane that extends along the elongated axis between opposing end surfaces of the expandable structure.

4. A device according to claim 1

wherein the expandable body includes an elongated axis, and

wherein the internal restraint includes an internal membrane that extends in one direction along the elongated axis between opposing end surfaces of the expandable structure and in a second direction transversely of the elongated axis between opposing interior side surfaces of the expandable structure.

5. A device capable of compressing cancellous bone comprising

an expandable body including an internal restraint coupled to the body which directs expansion of the body,

wherein the internal restraint directs expansion of the expandable body more in one direction than in another direction transverse the one direction.

6. A device capable of compressing cancellous bone comprising

an expandable body including an internal restraint coupled to the body which directs expansion of the body,

wherein the expandable body includes an elongated axis, and

wherein the internal restraint constrains expansion of the expandable body along the elongated axis.

7. A device capable of compressing cancellous bone comprising

an expandable body including an internal restraint coupled to the body which directs expansion of the body,

wherein the expandable body includes an elongated axis, and

wherein the internal restraint directs expansion of the expandable body more in one radial direction from the elongated axis than in a second radial direction from the elongated axis.

8. A method for treating bone comprising the steps of

inserting an expandable body inside bone, the expandable body including an internal restraint coupled to the body which directs expansion of the body,

causing directed expansion of the body in cancellous bone, and

compacting cancellous bone by the directed expansion.

9. A method according to claim 8

wherein the directed expansion moves vertebral end plates.

10. A method according to claim 8

wherein the directed expansion lifts tibial plateau depressions.

11. A method according to claim 8

wherein the directed expansion lifts proximal humerus depressions.

12. A method according to claim 8

wherein the directed expansion moves cortical bone.

13. A method according to claim 12

wherein the movement of cortical bone reduces a fracture.

14. A method according to claim 8

wherein the step of compacting forms a cavity.

15. A method according to claim 14

further including the step of filling the cavity with a material.

16. A method according to claim 15

wherein the material comprises a biocompatible bone substitute.

17. A method according to claim 15

wherein the material comprises bone cement.

18. A method according to claim 15

wherein the material comprises synthetic bone substitute.

19. A method according to claim 15

wherein the material comprises a flowable material that sets to a hardened condition.

20. A device for compacting cancellous bone comprising a body adapted to be inserted into bone and undergo expansion in cancellous bone to compact cancellous bone, the body including material that, during the expansion in cancellous bone, applies a force capable of moving fractured cortical bone, and further includes an interior membrane to constrain the expansion in cancellous bone.

21. A device according to claim 20

wherein the expandable body includes an elongated axis, and

wherein the internal membrane extends transversely of the elongated axis between opposing interior side surfaces of the expandable structure.

22. A device according to claim 20

wherein the expandable body includes an elongated axis, and

wherein the internal membrane extends along the elongated axis between opposing end surfaces of the expandable structure.

23. A device according to claim 20

wherein the expandable body includes an elongated axis, and

wherein the internal membrane extends in one direction along the elongated axis between opposing end surfaces of the expandable structure and in a second direction transversely of the elongated axis between opposing interior side surfaces of the expandable structure.

24. A device according to claim 20

wherein the internal membrane constrains expansion of the expandable body more in one direction than in another direction transverse the one direction.

25. A device according to claim 20

wherein the expandable body includes an elongated axis,

wherein the internal membrane constrains expansion of the expandable body along the elongated axis.

26. A device according to claim 20

wherein the expandable body includes an elongated axis,

wherein the internal membrane constrains expansion of the expandable body more in one radial direction from the elongated axis than in a second radial direction from the elongated axis.

27. A device according to claim 26

wherein the internal membrane constrains-expansion of the expandable body along the elongated axis.

28. A method for treating bone comprising the steps of

inserting a device as defined in claim 20 inside bone,

causing constrained expansion of the body in cancellous bone, and

compacting cancellous bone by the constrained expansion.

29. A method according to claim 28

wherein the constrained expansion moves vertebral end plates.

30. A method according to claim 28

wherein the constrained expansion lifts tibial plateau depressions.

31. A method according to claim 28

wherein the constrained expansion lifts proximal humerus depressions.

32. A method according to claim 28

wherein the constrained expansion moves cortical bone.

33. A method according to claim 32

wherein the movement of cortical bone reduces a fracture.

34. A method according to claim 28

wherein the step of compacting forms a cavity.

35. A method according to claim 34

further including the step of filling the cavity with a material.

36. A method according to claim 35

wherein the material comprises a biocompatible bone substitute.

37. A method according to claim 35

wherein the material comprises bone cement.

38. A method according to claim 35

wherein the material comprises synthetic bone substitute.

39. A method according to claim 35

wherein the material comprises a flowable material that sets to a hardened condition.