Patent Issued for Clamping Assembly For External Fixation System (USPTO 10,299,830)

Health & Medicine Business Daily |

2019 JUN 12 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Business Daily -- A patent by the inventors Cresina, Jeffery (Middlesex, NJ); Slagle, Paul Thomas (Leesburg, IN), filed on , was published online on , according to news reporting originating from Alexandria, Virginia, by NewsRx correspondents.

Patent number 10,299,830 is assigned to Biomet Manufacturing LLC (Warsaw, Indiana, United States).

The following quote was obtained by the news editors from the background information supplied by the inventors: “The statements in this section merely provide background information related to the present disclosure and should not be construed as constituting prior art.

“In various orthopedic surgical procedures, it is often necessary to secure or stabilize two or more portions of bone or soft tissue relative to one another. This need is often the result of a bone or soft tissue injury, such as an acute fracture of the bone. To ensure that the damaged bone fragments are capable of properly regenerating, it is important that the bone fragments be adequately stabilized during the regeneration process. To adequately stabilize the injured bone fragments and/or soft tissue, a bone distraction frame is typically installed onto the patient.

“Once a distraction frame has been installed onto a patient, it is sometimes necessary to further adjust the frame to fine tune the alignment of the damaged bone fragments or soft tissue. This process, which is referred to as ‘fracture reduction,’ is typically performed under the guidance of a C-arm (X-ray) and involves the surgeon manually pulling on the transfixation pin until the bones are aligned in a desired orientation. Once the surgeon is satisfied with this alignment, the clamps of the distraction frame can then be tightened.

“While many external fixation devices have proven generally effective for stabilizing bones, these conventional systems are often difficult and time consuming to adjust once assembled, particularly as the surgeon may need to manually loosen and retighten the clamps several times during the fracture reduction process. Not only is the adjustment process time consuming, but the health and safety of the surgeon is also potentially compromised, particularly as the surgeon must expose his hands to the X-ray field during the reduction process. Thus, it would be useful to have an external fixation framing system that is not only easy to assemble, but also provides the surgeon with a greater degree of flexibility in terms of safely adjusting the frame once it has been assembled.

“The present application is intended to improve upon and resolve some of these known deficiencies of the art.”

In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventors’ summary information for this patent: “According to a first aspect of the present teachings, a clamping assembly for an external fixation system is provided and comprises a clamp body having an opening for receiving a bone fixation member; a pivotably rotatable locking arm associated with the clamp body, the locking arm being configured to provisionally hold the bone fixation member inside the opening of the clamp body; and a cam arm coupled to the locking arm, the cam arm being pivotably rotatable towards the clamp body to definitively hold the bone fixation member inside the opening of the clamp body.

“According to another aspect of the present teachings, a clamping assembly for an external fixation system comprises a clamp body having an opening for receiving a bone fixation member; a pivotably rotatable locking arm associated with the clamp body, the locking arm being configured to provisionally hold the bone fixation member inside the opening of the clamp body; and a plurality of slots formed into the clamp body, wherein at least one of the plurality of slots has an end that terminates into the opening of the clamp body.

“Other objects and benefits of the disclosure will become apparent from the following written description along with the accompanying figures.”

The claims supplied by the inventors are:

“The invention claimed is:

“1. A clamping assembly for an external fixation system, comprising: a clamp body having an opening for receiving a bone fixation member; a pivotably rotatable locking arm associated with the clamp body; the locking arm being configured to provisionally hold the bone fixation member inside the opening of the clamp body, wherein the opening is partially defined by the locking arm; a cam arm coupled to the locking arm, wherein the locking arm and the cam arm pivotably rotate in the same direction to definitively hold the bone fixation member inside the opening of the clamp body; and a plurality of slots formed into the clamp body, wherein at least one of the plurality of slots has an end that terminates into the opening of the clamp body.

“2. The clamping assembly of claim 1, wherein the opening is defined between a pair of jaws that are configured to snappingly engage the bone fixation member as the bone fixation member is introduced into the opening.

“3. The clamping assembly of claim 2, wherein the clamp body further comprises a second opening for receiving a second bone fixation member, the second opening being defined between a second pair of jaws that are configured to snappingly engage the second bone fixation member as the second bone fixation member is introduced into the second opening.

“4. The clamping assembly of claim 1, further comprising a second clamp body operably interconnected with the first clamp body.

“5. The clamping assembly of claim 4, wherein the first and second clamp bodies share a common through-hole, the through-hole being configured to receive a bolt that is threadable into the locking arm.

“6. The clamping assembly of claim 5, wherein the locking arm includes internal threads that are configured to mesh with external threads of the bolt as the bolt is rotated about a longitudinal axis.

“7. The clamping assembly of claim 5, further comprising at least one serrated surface that is configured to arrest rotational movement of the first clamp body relative to the second clamp body about a longitudinal axis of the bolt.

“8. The clamping assembly of claim 7, wherein the at least one serrated surface is disposed between the first and second clamp bodies.

“9. The clamping assembly of claim 7, wherein the at least one serrated surface is disposed on at least one of the first and second clamp bodies.

“10. The clamping assembly of claim 1, wherein the cam arm is pivotably rotatable about an end of the locking arm and towards the clamp body to definitively hold the bone fixation member inside the opening of the clamp body.

“11. The clamping assembly of claim 10, further comprising a cam pocket for receiving and engaging a portion of the cam arm as the cam arm is pivotably rotatable towards the clamp body.

“12. The clamping assembly of claim 1, further comprising a tab extending from the clamp body, the tab including a through-hole for receiving a locking pin.

“13. The clamping assembly of claim 12, wherein the locking arm further comprises an opening that is configured to align with the through-hole to create a common aperture for receiving the locking pin.

“14. The clamping assembly of claim 13, wherein the locking pin is configured to prevent the locking arm from being lifted away from the clamp body when inserted through the common aperture.

“15. The clamping assembly of claim 1, wherein the bone fixation member comprises a bone pin, a bone screw, a bone transfixing pin, a frame member, a rod or a bar.

“16. A clamping assembly for an external fixation system, comprising: a first clamp body having an opening for receiving a bone fixation member; a second clamp body operably interconnected with the first clamp body; a pivotably rotatable locking arm associated with the first clamp body; the locking arm being configured to provisionally hold the bone fixation member inside the opening of the first clamp body, wherein the opening is partially defined by the locking arm; and a plurality of slots formed into the first clamp body, wherein at least one of the plurality of slots has an end that terminates into the opening of the first clamp body; wherein the first and second clamp bodies share a common through-hole, the through-hole being configured to receive a bolt that is threadable into the locking arm.

“17. The clamping assembly of claim 16, wherein the opening is defined between a pair of jaws that are configured to snappingly engage the bone fixation member as the bone fixation member is introduced into the opening.

“18. The clamping assembly of claim 17, wherein the clamp body further comprises a second opening for receiving a second bone fixation member, the second opening being defined between a second pair of jaws that are configured to snappingly engage the second bone fixation member as the second bone fixation member is introduced into the second opening.”

URL and more information on this patent, see: Cresina, Jeffery; Slagle, Paul Thomas. Clamping Assembly For External Fixation System. U.S. Patent Number 10,299,830, filed , and published online on . Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,299,830.PN.&OS=PN/10,299,830RS=PN/10,299,830

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