MULTI-MODALITY APPARATUS
A harness comprising a patient module connector, an extremity hub; a cable branch including a plurality of channel pairs. The cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub. The harness comprises a monitoring cable configured to attach and detach from the extremity hub.
This disclosure describes a harness and a monitoring cable for use during a surgical procedure.
BACKGROUNDElectromyography (EMG) is the study of the electrical activity of muscles. It is a test used to help assess the health and function of nerves and/or muscles. EMG can be used by a surgeon to assess proper pedicle screw placement in fusion surgeries to help reduce the chance of nerve damage, or to aid in assessing nerve proximity and location during surgical approaches. Typically, one or more hardware and software components are used to assist in performing an EMG test during a surgical procedure.
SUMMARYIn one embodiment, a harness comprises a patient module connector, an extremity hub, a cable branch including a plurality of channel pairs. The cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub. The harness comprises a monitoring cable configured to attach and detach from the extremity hub. The monitoring cable includes a first electrode wire, a second electrode wire, and a housing. The housing is configured to receive a first end of the first electrode wire and a first end of the second electrode wire. The housing includes a first aperture and a second aperture along an axis of the housing. The monitoring cable includes a body that includes a channel formed by an aperture along a first axis of the body. The channel includes a first retention element located on a first surface of the channel and along a second axis of the body. The channel includes a second retention element located along a second surface of the channel and along the second axis. The first axis and the second axis are perpendicular. The body is configured to slidably receive the housing. The housing is held in a fixed position based on insertion of the first retention element within the first aperture and insertion of the second retention element within the second aperture.
In another embodiment, a monitoring cable comprises a first electrode wire, a second electrode wire, and a housing. The housing is configured to receive a first end of the first electrode wire and a first end of the second electrode wire. The housing includes a first aperture and a second aperture along an axis of the housing. The monitoring cable comprises a body. The body includes a channel formed by an aperture along a first axis of the body. The channel includes a first retention element located on a first surface of the channel and along a second axis of the body. The aperture includes a second retention element located along a second surface of the channel and along the second axis. The first axis and the second axis are perpendicular. The body is configured to slidably receive the housing. The housing is held in a fixed position based on insertion of the first retention element within the first aperture and insertion of the second retention element within the second aperture.
In another embodiment, a harness comprises a patient module connector, an extremity hub, and a cable branch including a plurality of channel pairs. The cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub. The harness includes a monitoring cable. The monitoring cable is configured to attach and detach from the extremity hub. The monitoring cable includes a plurality of electrode wires and a plurality of housings configured to receive the plurality of electrode wires. The plurality of housings includes a plurality of apertures. The monitoring cable includes a body. The body includes a plurality of channels formed by a plurality of apertures along the body. The plurality of channels include a plurality of retention elements located on surfaces of the plurality of channels. The body is configured to slidably receive the plurality of housings and hold the plurality of housings in fixed positions based on insertion of the plurality of retention elements within the plurality of apertures.
Many advantages of the present invention will be apparent to those skilled in the art with a reading of this specification in conjunction with the attached drawings, wherein like reference numerals are applied to like elements and wherein:
Illustrative embodiments of the invention are described below. In the interest of clarity, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to active the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure. It is furthermore to be readily understood that, although discussed below primarily within the context of spinal surgery, the systems and methods of the present invention may be employed in any number of anatomical settings to provide access to any number of different surgical target sites throughout the body.
Examples described herein include a harness and a monitoring cable for performing a surgical procedure. In one example, a harness for use during a surgical procedure includes a patient module connector. The patient module connector is configured to connect to a monitoring system for providing various neurophysiologic assessments during the surgical procedure. The harness also includes an extremity hub. The extremity hub includes one or more connectors for mating with one or more wires connected to one or more electrodes. The harness also includes a cable branch including a plurality of channel pairs. The plurality of channel pairs are configured for providing one or more stimulation signals to various locations of a body of a patient during the surgical procedure. The plurality of channel pairs are also configured for acquiring one or more responses based on the one or more stimulation signals. In one example, the responses are provided to the monitoring system for analysis and for providing feedback to a user during the surgical procedure. In one example, the cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub. In another example, the harness includes multiple cable branches that are also coupled to the patient module connector and the extremity hub as described herein.
The harness also includes a monitoring cable configured to attach and detach from the extremity hub. In one example, the monitoring cable includes at least a first electrode wire and a second electrode wire. The monitoring cable also includes a housing that is integrally molded to receive a first end of the first electrode wire and a first end of the second electrode wire. In one embodiment, the housing includes a first aperture and a second aperture along an axis of the housing. In another embodiment, the housing includes additional apertures along one or more axes of the housing. The monitoring cable also includes a body that includes an aperture along a first axis of the body. The aperture includes a first retention element located on a first surface of the aperture and along a second axis of the body. The aperture also includes a second retention element along a second surface of the aperture and along the second axis. In one embodiment, the first axis and the second axis are perpendicular. The body of the monitoring cable is configured to slidably receive the housing. The body is held in a fixed position based on insertion of the first retention element within the first aperture and insertion of the second retention element within the second aperture.
Referring now to the figures,
The patient module connector 102 includes a connection point to a patient module (not shown). In one example, the patient module connector 102 includes 70 distinct channels. Continuing with this example, the patient module connector 102 includes a programmable memory device. In one example, the programmable memory device is an electrically erasable programmable read-only memory. In one example, there are numerous stimulation channels for providing a stimulation signal to the body of a patient during a surgical procedure and numerous acquisition channels for acquiring a response to a stimulation signal provided to the body of the patient.
The cable branches 104, 106, 108, 110, and 112 are designed to utilize the same cable construction. In one example, the cable branch 104 includes six acquisition channel pairs and one stimulation channel pair. Continuing with this example, the insulation surrounding the stimulation channel pair needs to ensure 1500 VAC isolation between the six channel acquisition channel pairs. In one example, cable branches 106, 110, and 112 are configured in a similar manner as described above with regard to cable branch 104. In this example, cable branch 108 has an inverted layout that includes one acquisition channel pair, five stimulation channel pairs, and one channel pair for ground.
The extremity hubs 114, 116, 118, 120, and 122 are designed to utilize the same overmold design. The same overmold design enables the extremity hubs to use the same tool. This also optimizes manufacturing costs as well as ensuring a reproducible design. In one example, the extremity hubs 114, 116, 120, and 122 have the same connector layout.
The housing 402 may be attached to or detached to one of the extremity hubs 114, 116, 118, 120, and 122 of
Referring back to
The channel 635 formed by the aperture 634 includes retention elements 660 and 662 along a first surface of the channel 635 and retention elements 664 and 666 along a second surface of the channel 635. Retention elements 660 and 664 are located along the axis 648. Retention elements 662 and 666 are located along the axis 650. The axis 642 is parallel to axis 640 and perpendicular to the axes 648 and 650.
The channel 637 formed by the aperture 636 includes retention elements 668 and 670 along a first surface of the channel 637 and retention elements 672 and 674 along a second surface of the channel 637. Retention elements 668 and 672 are located along the axis 648. Retention elements 670 and 674 are located along the axis 650. The axis 644 is parallel to axis 642 and perpendicular to the axes 648 and 650.
The channel 639 formed by the aperture 638 includes retention elements 676 and 678 along a first surface of the channel 639 and retention elements 680 and 682 along a second surface of the channel 639. Retention elements 676 and 680 are located along the axis 648. Retention elements 678 and 682 are located along the axis 650. The axis 646 is parallel to axis 644 and perpendicular to the axes 648 and 650.
Prior to commencing a surgical procedure, the electrode wires 802, 804, 806, 808, 810, 812, 814, and 816 are configured to monitor various parts of a patient's body. In one example, in surgical procedure that involves a portion of the cervical spine, the electrodes associated with electrode wires 802 and 804 may be placed at the trapezius, the electrodes associated with electrode wires 806 and 808 may be placed at the triceps, the electrodes associated with electrode wires 810 and 812 may be placed at the abductor pollicis brevis and the abductor digiti minimi, and the electrodes associated with electrode wires 814 and 816 at the deltoid. In another example, in a surgical procedure that involves a portion of the lumbar spine, the electrodes associated with electrode wires 802 and 804 may be placed at the vastus medialis, the electrodes associated with electrode wires 806 and 808 may be placed at the biceps femoris, the electrodes associated with electrode wires 810 and 812 may be placed at the gastroc medial, and the electrodes associated with electrode wires 814 and 816 at the tibialis anterior.
Housings 818, 820, 822, and 824 are configured to receive a first end of a first electrode wire and a first end of a second electrode wire. The housings 818, 820, 822, and 824 are also configured to attach to and detach from the body 826. For example, as shown in
Referring back to
It should be understood that arrangements described herein are for purposes of example only. As such, those skilled in the art will appreciate that other arrangements and other elements (e.g. machines, interfaces, functions, orders, and groupings of functions, etc.) can be used instead, and some elements may be omitted altogether according to the desired results. Further, many of the elements that are described are functional entities that may be implemented as discrete or distributed components or in conjunction with other components, in any suitable combination and location, or other structural elements described as independent structures may be combined.
Claims
1-2. (canceled)
4-20. (canceled)
21. An apparatus comprising:
- a patient module connector;
- an extremity hub;
- a cable branch including a plurality of channel pairs, wherein the cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub; and
- a monitoring cable configured to attach and detach from the extremity hub, wherein the monitoring cable includes: a plurality of housings that each include a plurality of electrode wires, wherein each housing of the plurality of housings includes at least one aperture; and a body that includes a plurality of channels, wherein the plurality of channels include a plurality of retention elements located on surfaces of the plurality of channels, wherein the body is configured to slidably receive one or more of the plurality of housings and fixedly hold the one or more of the plurality of housings using corresponding retention elements of the plurality of channels and one or more apertures of the one or more of the plurality of housings.
22. The apparatus of claim 21, further comprising:
- a first tab coupled to a first surface of the body; and
- a second tab coupled to a second surface of the body, wherein the first surface is opposite of the second surface, wherein the first tab and the second tab are configured to attach and detach from the extremity hub.
23. The apparatus of claim 22, wherein the first tab is configured to attach to the extremity hub at a first location and the second tab is configured to attach to the extremity hub at a second location.
24. The apparatus of claim 21, wherein the patient module connector comprises a programmable memory device.
25. The apparatus of claim 21, wherein at least one of the plurality of channel pairs are configured to provide a stimulation signal to one or more locations of a body of a patient.
26. The apparatus of claim 25, wherein at least one of the plurality of channel pairs are configured to acquire one or more responses based on the stimulation signal.
27. The apparatus of claim 21, wherein the plurality of channel pairs are configured to provide one or more stimulation signals and acquire one or more responses to the one or more stimulation signals applied to a patient.
28. The apparatus of claim 21, further configured to maintain an electrical connection between at least one electrode and the extremity hub.
29. The apparatus of claim 21, wherein the body is configured to receive at least four housings.
30. The apparatus of claim 21, wherein the body is configured with a plurality of apertures dimensioned to receive the plurality of housings.
31. The apparatus of claim 21, further comprising one or more additional extremity hubs having a same connector layout or a different connector layout.
32. A monitoring cable configured to be coupled to an extremity hub of a cable branch, the monitoring cable comprising:
- a plurality of housings that each include a plurality of electrode wires, wherein the plurality of housings include a plurality of apertures; and
- a body that includes a plurality of channels, wherein the plurality of channels include a plurality of retention elements located on surfaces of the plurality of channels, wherein the body is configured to slidably receive one or more of the plurality of housings and fixedly hold the one or more of the plurality of housings using corresponding retention elements of the plurality of channels and apertures of the one or more of the plurality of housings.
33. The monitoring cable of claim 32, further comprising:
- a first tab coupled to a first surface of the body; and
- a second tab coupled to a second surface of the body, wherein the first surface is opposite of the second surface, wherein the first tab and the second tab are configured to attach and detach from the extremity hub.
34. The monitoring cable of claim 32, wherein each channel of the body includes a first retention element on a first surface and a second retention element on a second surface.
35. The monitoring cable of claim 34, wherein each channel of the body includes a third retention element on the first surface of the channel and a fourth retention element on the second surface of the channel.
36. The monitoring cable of claim 35, wherein each housing includes a first aperture and a second aperture along a first axis of each housing and a third aperture and a fourth aperture along a second axis of each housing, wherein the second axis is parallel to the first axis, wherein each housing is held in a fixed position based on insertion of the first retention element within the first aperture, the second retention element within the second aperture, the third retention element within the third aperture, and the fourth retention element within the fourth aperture.
37. The monitoring cable of claim 32, wherein the plurality of channels of the body include four channels formed by four apertures, wherein each channel includes opposing retention elements for connecting to corresponding housing apertures.
38. A apparatus comprising:
- a patient module connector;
- a plurality of extremity hubs;
- a plurality of cable branches, wherein each cable branch includes a first end coupled to the patient module connector and a second end coupled to one of the plurality of extremity hubs; and
- at least one monitoring cable configured to attach and detach from one of the plurality of extremity hubs, wherein the monitoring cable includes: at least one housing that includes a plurality of electrode wires and a plurality of apertures; and a body that includes a plurality of channels, wherein the plurality of channels include a plurality of retention elements located on surfaces of the plurality of channels, wherein the body is configured to slidably receive the at least one housing and fixedly hold the at least one housing using corresponding retention elements of one of the plurality of channels and the plurality apertures of the at least one housing.
39. The apparatus of claim 38, wherein each of the plurality of channels include a pair of opposing retention elements located on opposing surfaces.
40. The apparatus of claim 38, further comprising:
- a first tab coupled to a first outer surface of the body; and
- a second tab coupled to a second outer surface of the body, wherein the first tab and the second tab are configured to attach and detach from an extremity hub.
Type: Application
Filed: Apr 13, 2023
Publication Date: Aug 10, 2023
Inventors: D.J. Geiger (San Diego, CA), Chris Ryan (San Diego, CA), Richard W. Schermerhorn (San Diego, CA)
Application Number: 18/300,081