Drug Delivery And Diagnostic System For Orthopedic Implants
A drug delivery and diagnostic system can include an orthopedic implant having an outer attachment surface. A conduit can be coupled to the outer attachment surface. The conduit can have an inlet and a plurality of perforations formed along a length thereof. The conduit can be adapted to pass fluid between the inlet and the perforations. A subcutaneous port can be fluidly coupled to the inlet and be adapted to communicate fluid through the inlet, along the conduit and out of the perforations around and along the outer attachment surface of the orthopedic implant.
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This application is a divisional of U.S. patent application Ser. No. 13/039,362 filed Mar. 3, 2011, which claims the benefit of U.S. Provisional Application No. 61/311,096 filed Mar. 5, 2010. The entire disclosures of the above applications are incorporated herein by reference.
FIELDThe present disclosure relates generally to orthopedic implants and more specifically to orthopedic implants having a drug delivery and diagnostic system.
BACKGROUNDThis section provides background information related to the present disclosure which is not necessarily prior art.
Orthopedic implants have been used to partially or entirely replace bones and joints that may be damaged. In some examples however, infection on or near such orthopedic implants may take place after implantation of the orthopedic prosthesis. Moreover, the onset of infection on or near the orthopedic implant and tissue interface may be difficult to detect. Furthermore, the type of infecting agent may also be unknown. In some examples, once an infection is eventually detected, the recourse may be invasive and include extraction of the orthopedic implant and subsequent revision surgery. To address such concerns drug coated orthopedic implants have been developed. Drug coated orthopedic implants provide a coating on the implant to be effective against various bacteria and strain. Drug coated implants are generally most effective immediately after implantation of the orthopedic implant, such as when the eluting mechanism is activated upon contact with bodily fluid.
SUMMARYThis section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
A drug delivery and diagnostic system can include an orthopedic implant having an outer attachment surface. A conduit can be coupled to the outer attachment surface. The conduit can have an inlet and a plurality of perforations formed along a length thereof. The conduit can be adapted to pass fluid between the inlet and the perforations. A subcutaneous port can be fluidly coupled to the inlet and be adapted to communicate fluid through the inlet, along the conduit and out of the perforations around and along the outer attachment surface of the orthopedic implant.
According to additional features, the conduit can be spirally wrapped around the outer attachment surface. The conduit can be formed of biocompatible metal or polymer. The conduit can be attached to the outer attachment surface, such as by welding, brazing or gluing.
According to other features, a drug delivery system can comprise an orthopedic implant having a blind bore formed thereon and at least one passage that fluidly connects the blind bore with an outer surface of the orthopedic implant. An implant module can have a reservoir, a first radio frequency (RF) receiver, a fluid reservoir, and a valve that is selectively movable from a closed position wherein fluid is retained in the reservoir and an open position wherein the fluid is communicated out of the reservoir. The implant module can have an insertion end that is adapted to couple to the orthopedic implant at the blind bore. A handheld device having a second RF transmitter can communicate with the first RF receiver. The handheld device can be operable to send a signal from the second RF transmitter. The first RF receiver is operable to initiate movement of the valve to the open position upon receipt of the signal from the second RF transmitter.
Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
DETAILED DESCRIPTIONExample embodiments will now be described more fully with reference to the accompanying drawings. While a femoral stem is shown in
With initial reference to
As shown in
The subcutaneous port 14 can generally comprise a port body 64 that has an artificial septum 66 arranged thereon. A subcutaneous port nipple 68 can extend from the body 64. A rib 70 can be formed around the subcutaneous port nipple 68. It will be appreciated that the subcutaneous port 14 can take other forms. The catheter 16 can be operable to be slidably advanced at opposite terminal ends onto the adapter nipple 60 and the subcutaneous port nipple 68, respectively. The catheter 16 can be coated with and/or made with antifouling (antibacterial) material.
In one example of assembling the adapter 18 to the femoral stem 20, the adapter threads 58 can be threadably advanced into the inserter hole 38 at the proximal body portion 34 of the femoral stem 20. In this regard, the adapter threads 58 threadably advance around the threads 40 provided in the inserter hole 38. Again, the ends of the catheter 16 can be slidably advanced into a secure relationship with the respective adapter nipple 60 and subcutaneous port nipple 68. It will be appreciated that the catheter 16 can comprise any length suitable for a particular patient that allows the subcutaneous port 14 to be implanted under skin 74 (
Turning now to
With reference now to
With specific reference now to
With specific reference now to
The implant module 214 can generally comprise an insertion end 222 having module threads 224. As with the adapter 18 described above, the module threads 224 can be configured to threadably mate with blind bore threads 226 provided on an inserter hole 230 of the orthopedic implant 212. The implant module 214 can further comprise a reservoir 232, a valve 234, an actuator 236 and a first radio frequency (RF) receiver 238. The handheld device 216 can generally comprise a housing 240 having a display 242, an interface panel 244 and a second RF transmitter 248.
One exemplary method of using the drug delivery system 210 will now be described. Once a surgeon, medical professional or patient has determined that antibiotics (or other flowable material described herein) is desired to be communicated to a tissue interface between the orthopedic prosthesis 212 and the femur 220, a signal can be communicated from the second RF transmitter 248 of the handheld device 216. Upon receipt of the signal sent from the second RF transmitter 248, the first RF receiver 238 can communicate with the actuator 236 to cause the actuator 236 to open the valve 234 from a closed position to an open position wherein antibiotics (or other fluid) can be communicated through the primary passage 256 and secondary passages 258 and to the tissue interface between the orthopedic prosthesis 212 and the femur 220.
Turning now to
As shown in
The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Claims
1. A drug delivery and diagnostic system comprising:
- an orthopedic implant having an outer attachment surface;
- a conduit coupled to the outer attachment surface, the conduit having an inlet and at least one perforation formed thereon, the conduit adapted to pass fluid between the inlet and the at least one perforation; and
- a subcutaneous port fluidly coupled to the inlet, wherein the subcutaneous port is adapted to communicate fluid through the inlet, along the conduit and out of the perforations around and along the outer attachment surface of the orthopedic implant.
2. The drug delivery and diagnostic system of claim 1, wherein the conduit is spirally wrapped around the outer attachment surface.
3. The drug delivery and diagnostic system of claim 2, wherein the conduit is formed of biocompatible metal.
4. The drug delivery and diagnostic system of claim 3, wherein the conduit is one of welded, brazed or glued to the outer attachment surface.
5. The drug delivery and diagnostic system of claim 1, wherein the at least one perforation includes a plurality of perforations formed along a length of the conduit.
6. The drug delivery and diagnostic system of claim 1, wherein the orthopedic implant comprises a femoral hip stem having a groove formed there along, the groove formed on the outer attachment surface.
7. The drug delivery and diagnostic system of claim 6, wherein the conduit nests in the groove.
8. The drug delivery and diagnostic system of claim 1, wherein the outer attachment surface includes a groove formed in an outer surface of the orthopedic implant.
9. The drug delivery and diagnostic system of claim 8, wherein the orthopedic implant is a femoral stem and the groove extends along a stem portion and a neck portion of the femoral stem.
10. A drug delivery and diagnostic system comprising:
- an orthopedic implant having an outer attachment surface;
- a conduit extending along the orthopedic implant and having an inlet and at least one outlet formed thereon, the conduit adapted to pass fluid between the inlet and the at least one outlet; and
- a subcutaneous port fluidly coupled to the inlet, wherein the subcutaneous port is adapted to communicate fluid through the inlet, along the conduit, and through the at least one outlet.
11. The drug delivery and diagnostic system of claim 10, wherein the conduit is coupled to the outer attachment surface.
12. The drug delivery and diagnostic system of claim 11, wherein the outer attachment surface includes a groove formed therein.
13. The drug delivery and diagnostic system of claim 10, wherein the at least one outlet includes at least one perforation formed through the conduit.
14. The drug delivery and diagnostic system of claim 10, wherein the at least one outlet includes at least one substantially linear pipe that branches out and extend along the outer attachment surface.
15. The drug delivery and diagnostic system of claim 10, further comprising:
- a syringe to fluidly communicate with the subcutaneous port.
16. The drug delivery and diagnostic system of claim 10, wherein the outer attachment surface extends around the orthopedic implant and the conduit is spirally wrapped around the orthopedic implant and coupled to the outer attachment surface.
17. A drug delivery and diagnostic system comprising:
- an orthopedic implant having an outer attachment surface comprising a groove formed in the outer attachment surface and extending around the orthopedic implant;
- a conduit extending along the orthopedic implant and having an inlet and at least one outlet formed thereon, the conduit adapted to pass fluid between the inlet and the at least one outlet; and
- a subcutaneous port fluidly coupled to the inlet, wherein the subcutaneous port is adapted to communicate fluid through the inlet, along the conduit, and through the at least one outlet;
- wherein the conduit is coupled with the outer attachment surface.
18. The drug delivery and diagnostic system of claim 17, wherein the conduit is spirally wrapped around the orthopedic implant and coupled within the groove.
19. The drug delivery and diagnostic system of claim 17, wherein the conduit is positioned in the groove and the groove has a depth such that the conduit does not extend past the outer attachment surface.
20. The drug delivery and diagnostic system of claim 17, wherein the at least one outlet is selected from a group comprising a perforation or a substantially linear pipe that branches out and extends along the outer attachment surface.
21. The drug delivery and diagnostic system of claim 17, wherein the orthopedic implant includes a femoral stem.
22. The drug delivery and diagnostic system of claim 17, wherein the conduit and the subcutaneous port are configured to at least one of deliver a therapy or extract fluid.
Type: Application
Filed: Aug 5, 2013
Publication Date: Dec 5, 2013
Applicant: Biomet Manufacturing, LLC (Warsaw, IN)
Inventors: Jason D. MERIDEW (Warsaw, IN), Mukesh Kumar (Warsaw, IN), Tayler E. Kreider (Warsaw, IN)
Application Number: 13/959,164
International Classification: A61M 5/14 (20060101);