The present disclosure relates to bioactive surgical implants, as well as methods of using the implants in a tissue repair. In particular, the disclosure relates to platelet-rich plasma implants used in a meniscal or rotator cuff repair.
Platelet-rich-plasma (PRP) and other orthobiologics used to promote healing in a tissue repair are typically fluidic and nonstructural. Therefore, after implantation into a repair site, it is difficult to ensure that the product stays in place long enough to bring and keep biological benefits to the intended site. One solution is a bioactive surgical implant, such as a “patch” made from fibrin sealants and platelet concentrates, which can be produced by isolating the PRP from anti-coagulated whole blood. Such PRP implants can be used for covering wound or tear surfaces to initiate healing.
To achieve optimal healing with the PRP implant, surgeons often desire to combine other types of biologic products, such as collagen, along with the implant. However, such surgical repairs may become cost prohibitive when using both products. Therefore, it would be advantageous to create bioactive PRP implants that also contain other types of orthobiologics for insertion into a repair site.
Additionally, if the PRP implant is placed into a pocket of tissue that will prevent migration, the PRP implant may be applied to the repair without any secondary fixation. However, in many cases, a surgeon may prefer to fix the PRP implant in a specific location to prevent further movement post-operatively during patient range of motion. Therefore, it would be advantageous to provide methods for fixing the PRP implant in place in a repair to achieve optimal healing.
The disclosure describes a method of making an enhanced bioactive PRP implant by supplying a centrifuge container with a collagen-based scaffold pre-inserted onto a moveable filter within the vial. The normal centrifuge process for creating the PRP implant is then followed, resulting in a PRP/collagen implant combination that does not require two separate devices or products.
The disclosure also describes devices and methods that allow various liquid biologics instead of or in addition to the collagen-based scaffold to be centrifuged within the container to create patches for insertion into a repair site. The liquid biologics could include bone marrow aspirate concentrate (BMAC), adipose tissue, hyaluronic acid (HA), placental tissue, stem cells, allografts, other biologic adjuncts, loose collagen, or mixtures thereof. The devices connect a syringe filled with the orthobiologics to the container in a sterile manner. A rubber media barrier restricts media or fluid outflow from the syringe until it is inserted into the vial, at which point the barrier is pushed open and the media can fill the container by depressing the syringe.
The disclosure also describes methods of fixing the PRP implant into place at the point of a tear or wound with suture anchors or staples. In particular, the disclosure describes applying the PRP implant adjacent to or within a meniscal tear. The disclosure also describes applying the PRP implant underneath or on top of a rotator cuff tear. In both types of repair, suture may be routed either through or over the PRP implant to hold the implant in place.
Further examples of the PRP implant and methods of making and use of this disclosure may include one or more of the following, in any suitable combination.
In examples, a method of preparing a bioactive implant for application to a wound or a tear in a tissue of a patient of this disclosure includes injecting a volume of the patient's whole blood into a container. The container includes a collagen-based scaffold disposed within the container and a movable member locked within the container. A centrifugal force is applied to the container sufficient to separate the bioactive implant from a layer of serum and a layer of erythrocytes. The moveable member is then released such that the moveable member moves though the container under the centrifugal force to couple the collagen-based scaffold with the bioactive implant, whereby the bioactive implant is suffused with collagen from the collagen-based scaffold.
In further examples, the moveable member is a filter. In examples, the bioactive implant includes platelet rich plasma. In examples, the collagen-based scaffold further includes one or more biologics selected from a group including bone marrow aspirate concentrate (BMAC), adipose tissue, hyaluronic acid (HA), placental tissue, stem cells, allografts, other biologic adjuncts, loose collagen, or mixtures thereof. In examples, after injecting the volume of the patient's whole blood into the container, the whole blood is allowed to coagulate. In examples, the collagen-based scaffold is derived from highly purified bovine Achilles tendon. In examples, the bioactive implant is removed from the container.
Examples of a bioactive implant of this disclosure include a bioactive implant formed by the methods described above.
Examples of a system for inserting a liquid biologic material into a container of this disclosure include a syringe containing the liquid biologic material. A needle cannula couples to a distal end of the syringe. A retractable barrier couples to a distal end of the needle cannula. A connector couples to the needle cannula such that the retractable barrier extends into an interior of the connector. The connector is configured to be disposed over an opening of a container. A needle in fluid communication with the syringe extends through the needle cannula and into the barrier. When the connector is disposed over the opening in the container, the opening causes the retractable barrier to retract, exposing a distal end of the needle to deliver the liquid biologic material into the container. In further examples, the container comprises a vacuum. In yet further examples, the opening is a V-shaped opening defined through a lid of the container.
Examples of a method of tissue repair of this disclosure include placing a bioactive implant in contact with an area in need of repair in a tissue of a patient. The bioactive implant is secured to an area adjacent the area in need of repair with at least one securing device extending through or around the bioactive implant. The bioactive implant is formed by a process of injecting a volume of the patient's whole blood into a container and applying a centrifugal force to the container sufficient to separate the bioactive implant from a layer of serum and a layer of erythrocytes. In further examples, the bioactive implant is coupled to a collagen-based scaffold. In examples, the tissue is a tendon, ligament or other soft tissue. In further examples, the tissue is a rotator cuff or a meniscus. In examples, the securing device is a suture or a staple. In examples, the area in need of repair is a wound or a tear.
A reading of the following detailed description and a review of the associated drawings will make apparent the advantages of these and other features. Both the foregoing general description and the following detailed description serve as an explanation only and do not restrict aspects of the disclosure as claimed.
Reference to the detailed description, combined with the following figures, will make the disclosure more fully understood, wherein:
In the following description, like components have the same reference numerals, regardless of different illustrated examples. To illustrate examples clearly and concisely, the drawings may not necessarily reflect appropriate scale and may have certain features shown in somewhat schematic form. The disclosure may describe and/or illustrate features in one example, and in the same way or in a similar way in one or more other examples, and/or combined with or instead of the features of the other examples.
In the specification and claims, for the purposes of describing and defining the invention, the terms “about” and “substantially” represent the inherent degree of uncertainty attributed to any quantitative comparison, value, measurement, or other representation. The terms “about” and “substantially” moreover represent the degree by which a quantitative representation may vary from a stated reference without resulting in a change in the basic function of the subject matter at issue. Open-ended terms, such as “comprise,” “include,” and/or plural forms of each, include the listed parts and can include additional parts not listed, while terms such as “and/or” include one or more of the listed parts and combinations of the listed parts. Use of the terms “top,” “bottom,” “above,” “below” and the like helps only in the clear description of the disclosure and does not limit the structure, positioning and/or operation of the disclosure in any manner.
However, the disclosure contemplates other suitable shapes of the compaction member 8. The compaction member 8 can be locked into the closed end 12 of the container 1 in the initial part of the centrifuge process. For example, the compaction member 8 may be fixed into the container 1 by deforming the wall 4. The compaction member 8 may then be released when the deformation of the wall 4 is released during the centrifuge process. The compaction member 8 can also be used to support the bioactive implant 10 during transport from the container 1.
The disclosure contemplates that other methods of augmenting the bioactive implant 10 inside the container 1 could be used. For example, the collagen-based scaffold 18 could be soaked in PRP prior to being placed on the compaction member 8. The scaffold could be made from other biologics, such as bone marrow aspirate, adipose, hyaluronic acid, stem cells, or allografts. In examples, rather than compacting the collagen-based scaffold 18 into the bioactive implant 10, the collagen-based scaffold 18 could be stitched to the bioactive implant 10 after removal from the container 1. In examples, the container 1 could also be configured to accept an external scaffold, such as an autograft.
The disclosure also contemplates that the barrier 70 could be disposed within the container 1 rather than attached to the needle cannula 68. The disclosure further contemplates that other types of syringes 64 may be configured to interact with the container 1. For example, the syringe 64 could be adapted to attach directly to the container 1. The disclosure further contemplates that the container 1 may contain a vacuum to aid in the injection of the liquid biologic material 66 into the container 1. A luer lock may be disposed between the syringe 64 and the container 1 to allow the container 1 to withstand injection backpressure. In other examples, the container 1 may include an outflow pressure release valve to allow for the liquid biologic material 66 to be added manually, without the need for a vacuum. These alternatives may advantageously provide additional versatility and customizability to the process of making the bioactive implant 10 by the user.
The disclosure also contemplates that the implant 10 may be used in other types of tissue repairs, such as a hip capsule or Achilles tendon repair. Other non-limiting examples of uses of the implant 10 include tendon wraps, labral repair adjuncts, quad tendon harvest site repair, foot and ankle orthopedic incision sites, epicondylitis, biceps repair, hip gluteus repair, piriformis, iliopsoas, medial collateral ligament repair of the knee, patellar tendon repair, and other sports medicine applications. The implant 10 can also be glued over cartilage defects.
In all tissue repairs using the bioactive implant 10 described above, the implant 10 can be introduced into the repair in several ways. For example, arthroscopic graspers, such as the grasper 46 shown in
In further examples, not shown, a suture extending from an anchor may have two free ends extending outside the anchor body. One limb of the suture may be passed through the implant 10, with a knot, such as a mulberry knot, being tied proximal to the implant 10. The implant 10 can then be shuttled into the joint by pulling on the other free limb of the suture. The mulberry knot may act as a backstop to pull the implant 10 into the joint. Similar techniques can use a mulberry knot and an independent suture that is passed through the tissue repair point of interest. It is also possible to use two suture anchors, with a mulberry knot tied between a limb from each of their respective sutures, and using the two free limbs (one from each anchor) to shuttle the implant 10 in.
In other examples, the implant 10 may be pierced with a needle 48 of a meniscal repair device 50, such as the meniscal repair device 50 shown in
In all methods of tissue repair described above, the implant 10 and any instrumentation can be introduced into a joint space through a slotted or regular cannula, or introduced percutaneously (i.e., no cannula). The implant 10 can also be placed in the distal end of a small diameter cannula for introduction into the joint space and pushed out with the use of an obturator in the desired location.
While the disclosure particularly shows and describes preferred examples, those skilled in the art will understand that various changes in form and details may exist without departing from the spirit and scope of the present application as defined by the appended claims. The scope of this present application intends to cover such variations. As such, the foregoing description of examples of the present application does not intend to limit the full scope conveyed by the appended claims.
This application claims priority to and benefit of U.S. Provisional Application No. 63/469,905, filed on May 31, 2023, entitled BIOACTIVE IMPLANTS AND METHODS OF MAKING AND USE, and U.S. Provisional Application No. 63/540,439, filed on Sep. 26, 2023, entitled BIOACTIVE IMPLANTS AND METHODS OF MAKING AND USE, the entire contents of which are incorporated herein by reference for all purposes.
Number | Date | Country | |
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63469905 | May 2023 | US | |
63540439 | Sep 2023 | US |