Bone tamp and methods of use

• US 9,642,663 B2
• Filed: 04/14/2015
• Issued: 05/09/2017
• Est. Priority Date: 04/29/2011
• Status: Active Grant

• Current Assignee: Kyphon SARL (Medtronic Plc)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Lauchner, Craig E., Smith, Michael A.
• Primary Examiner(s): Waggle, Jr., Larry E
• Application Number:
  US14/686,376
• Publication Number:
  US 20150216579A1
• Time in Patent Office: 756 Days
• CPC Class Codes: A61B 17/56 Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
• CPC Class Codes: A61B 17/885 Tools for expanding or compacting bones or discs or cavities therein A61B17/8805, A61B17/7097 take precedence
• CPC Class Codes: A61B 17/8852 capable of being assembled or enlarged, or changing shape, inside the bone or disc
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 17/8858 laterally or radially expansible inflatable A61B17/8855
• CPC Class Codes: A61B 2017/564 Methods for bone or joint treatment

Abstract

A system comprises an inflatable bone tamp including a plurality of linearly aligned expandable bodies. The system further comprises an elongated tubular shaft extending through the plurality of linearly aligned expandable bodies. The elongated tubular shaft includes a shaft wall and an interior partition structure. The system further comprises a plurality of channels extending through the shaft, each of the channels formed by a segment of the shaft wall and the interior partition structure and each of the channels in communication with the respective one of the plurality of expandable bodies via openings in the shaft. Each of the expandable bodies is independently inflatable.

Claims

1. A system comprising:

a shaft extending along a longitudinal axis between opposite proximal and distal ends, the shaft comprising an inner surface defining a lumen and a partition structure positioned within the lumen that divides the lumen into three channels;

a connector system coupled to the proximal end of the shaft, the connector system comprising three connectors that are each spaced apart from one another radially about a circumference of the connector system and along the longitudinal axis, the connectors each including an inner surface that defines a passageway that is in communication with only one of the channels; and

an inflatable bone tamp including a plurality of expandable bodies that are each coupled to the distal end of the shaft, the expandable bodies each being in communication with only one of the channels such that each of the expandable bodies is independently inflatable.

2. A system as recited in claim 1, wherein:

the channels each include a proximal opening that is in communication with one of the passageways; and

the system includes flow paths each extending from one of the passageways, through one of the channels and into one of the expandable bodies.

3. A system as recited in claim 1, wherein

the channels each include a distal opening that is in communication with one of the expandable bodies, the distal openings each extending transverse to the longitudinal axis.

4. A system as recited in claim 1, wherein the channels are each formed by the inner surface of the shaft and the partition structure.

5. A system as recited in claim 1, wherein the partition structure is Y-shaped.

6. A system as recited in claim 1, wherein the expandable bodies are aligned linearly along the shaft.

7. A system as recited in claim 1, wherein the expandable bodies are spaced apart from one another along the shaft.

8. A system as recited in claim 1, wherein the expandable bodies each extend between opposite first and second ends, inner surfaces of the first and second ends each being coupled to an outer surface of the shaft.

9. A system as recited in claim 1, wherein the expandable bodies comprises a proximal expandable body, a distal expandable body and a central expandable body between the proximal and distal expandable bodies, the proximal and distal expandable bodies comprising a compliant material and the central expandable body comprising a non-compliant material.

10. A system as recited in claim 1, wherein the expandable bodies comprises a proximal expandable body, a distal expandable body and a central expandable body between the proximal and distal expandable bodies, the proximal and distal expandable bodies comprising a non-compliant material and the central expandable body comprising a compliant material.

11. A system as recited in claim 1, wherein the expandable bodies comprises a proximal expandable body, a distal expandable body and a central expandable body between the proximal and distal expandable bodies, the proximal and distal expandable bodies having a maximum width when expanded that is greater than a maximum width of the central expandable body.

12. A system as recited in claim 1, wherein the expandable bodies each comprise a non-compliant material.

13. A system as recited in claim 1, wherein the connector system is fixed relative to the shaft.

14. A system as recited in claim 1, wherein the shaft is flexible and comprises a material selected from a group consisting of vinyl, nylon, polyethylene, ionomer, polyurethane, polyether block amide and polyethylene terephthalate.

15. A system as recited in claim 1, wherein the shaft is rigid and comprises a material selected from a group consisting of stainless steel and nickel-titanium alloy.

16. A system as recited in claim 1, wherein the connectors are Luer connectors.

17. A system comprising:

a shaft extending along a longitudinal axis between opposite proximal and distal ends, the shaft comprising an inner surface defining a lumen and a partition structure positioned within the lumen that divides the lumen into first, second, third and fourth channels, the proximal end of the shaft comprising a plurality of proximal openings and the distal end of the shaft comprising a plurality of distal openings, the proximal and distal openings each being in communication with one of the channels;

a connector system coupled to the proximal end of the shaft, the connector system comprising three connectors that are each spaced apart from one another radially about a circumference of the connector system and along the longitudinal axis, the connectors each including an inner surface that defines a passageway that is in communication with only one of the first, second and third channels; and

an inflatable bone tamp including first, second and third expandable bodies that are each coupled to the distal end of the shaft, the expandable bodies each being in communication with only one of the first, second and third channels such that each of the expandable bodies is independently inflatable,

wherein the fourth channel is configured to provide a flow channel for aspiration or suction.

18. A system as recited in claim 17, wherein the expandable bodies are aligned linearly along the shaft.

19. A system as recited in claim 17, wherein the first and third expandable bodies comprise a compliant material and the second expandable body comprises a non-compliant material.

20. A system comprising:

a flexible shaft extending along a longitudinal axis between a proximal end and an opposite distal end, the shaft comprising an inner surface defining a lumen and a Y-shaped partition structure positioned within the lumen that divides the lumen into three channels;

a connector system coupled to the proximal end of the shaft, the connector system comprising three connectors that are each spaced apart from one another radially about a circumference of the connector system and along the longitudinal axis, the connectors each including an inner surface that defines a passageway that is in communication with only one of the channels, the channels each including a proximal opening that is in communication with one of the passageways, the channels each including a distal opening extending transverse to the longitudinal axis; and

an inflatable bone tamp including a plurality of expandable bodies aligned linearly along the shaft, the expandable bodies each being coupled to the shaft, the expandable bodies each being in communication with only one of the distal openings such that each of the expandable bodies is independently inflatable,

wherein the system includes flow paths each extending from one of the passageways, through one of the channels and into one of the expandable bodies, and

wherein the expandable bodies comprises a proximal expandable body, a distal expandable body and a central expandable body between the proximal and distal expandable bodies, the proximal and distal expandable bodies comprising a non-compliant material and the central expandable body comprising a compliant material.