Device with a disposable element

Abstract

Constructions of medical devices having disposable elements are disclosed. Also disclosed are detachable elements including a body having retention features, electrical contacts, and sensors. Further disclosed are detachable elements including a body having a bore and retention recess, electrical contacts, and a printed circuit board assembly (PCB) in contact with an innermost surface of the body forming the retention recess. Further disclosed are detachable elements including a body having an opening and a printed film including a conductive element, wherein the conductive element includes a sensor configured to align with the opening to expose the sensor. Further disclosed are reusable assemblies having matching retention features.

Description

[0001] This application is a divisional application of PCT patent application PCT / US2019 / 055655 (international application date October 10, 2019, priority date October 11, 2018, Chinese national application number 201980066898.3, invention title "Device with Disposable Components"), which entered the Chinese national phase on April 9, 2021.

[0002] Cross-reference to related applications

[0003] This application claims the benefit of U.S. Provisional Application No. 62 / 744,513, filed October 11, 2018, and U.S. Provisional Application No. 62 / 804,095, filed February 11, 2019, the contents of each of which are incorporated herein by reference in their entirety for all purposes. Technical Field

[0004] This disclosure provides apparatus and methods for detecting tissue damage by measuring subcutaneous moisture (SEM). This disclosure further provides apparatus and methods for detecting tissue damage by measuring SEM, wherein the apparatus includes a printed circuit board (PCB) assembled into a molded frame. Background Technology

[0005] Printed circuit boards (PCBs) serve as a flat base in medical devices to physically support and electrically connect electronic components and conductors. PCBs can be single-sided, double-sided, or multi-layered. Currently, PCBs are secured in a frame by adhesives or by providing lips within the device frame to capture the edges of the PCB. Summary of the Invention

[0006] In one aspect, this disclosure provides and includes a removable element for use with a reusable assembly having a retention recess and an alignment guide, and a planar contact surface parallel to the retention recess. The removable element includes: a body including a retention feature configured to engage the retention recess; and an electrical contactor coupled to the body, wherein the contactor includes a cantilever element configured to contact the planar contact surface when the retention feature engages with the retention recess, wherein the cantilever element is configured to slide along the contact surface when the removable element is placed together with the reusable assembly.

[0007] In one aspect, this disclosure provides and includes a connector comprising: a reusable component including a retaining groove and an electrical contact surface parallel to the retaining groove; and a removable element including a body having a retaining feature configured to engage the retaining groove and an electrical contactor coupled to the body, wherein the contactor includes a compliant element configured to contact the contact surface of the reusable component when the retaining feature of the removable element engages with the retaining groove of the reusable component and to slide along the contact surface when the removable element is placed together with the reusable component.

[0008] In one aspect, this disclosure provides and includes a removable element comprising: a body including a hole and a retaining recess, wherein the retaining recess includes a reference surface; and a printed circuit board assembly (PCBA) including a printed circuit board (PCB) having an outer edge and a contact coupled to the PCB, wherein a portion of the contact extends beyond the outer edge of the PCB, and wherein the portion of the contact extending beyond the outer edge of the PCB contacts the reference surface. In another aspect, the outer surface of the PCB is flush with the surface of the frame without a protruding lip or the use of adhesive.

[0009] In one aspect, this disclosure provides and includes a detachable element comprising: a body including an upper portion and a lower portion connected by a flexible arm, wherein the upper portion includes an opening and the lower portion is attached to a compressible spring on its bottom surface; and a printed film having a splice area and a non-splice area, wherein the splice area includes a sensor comprising two electrodes on a first surface, and wherein the splice area is inserted between the upper portion and the lower portion such that the sensor is aligned with the opening. Attached Figure Description

[0010] This document describes aspects of the present disclosure by way of example only, with reference to the accompanying drawings. Referring now to the drawings in detail, it should be emphasized that the details shown are by way of example and are used for illustrative discussion of aspects of the present disclosure. In this respect, the description and drawings, considered individually and together, will make it apparent to those skilled in the art how aspects of the present disclosure can be practiced.

[0011] Figure 1A A medical scanner according to this disclosure is described.

[0012] Figure 1B A connector according to this disclosure is depicted, the connector comprising: Figure 1AThe medical scanner has reusable components and detachable elements in part of area "A".

[0013] Figure 2 Based on this disclosure Figure 1B A perspective view of the bottom surface of the removable component.

[0014] Figure 3 This is a perspective view of the top surface of the reusable component according to this disclosure.

[0015] Figure 4 This is a side view of a reusable component according to this disclosure.

[0016] Figure 5 This is a side view of a detachable element that mates with a reusable component according to this disclosure.

[0017] Figure 6 Based on this disclosure Figure 5 The cross-section of the side view.

[0018] Figure 7A Based on this disclosure Figure 1B Another perspective view of the bottom surface of the removable component.

[0019] Figure 7B Based on this disclosure Figure 7A Partial exploded view of the detachable components.

[0020] Figure 8 It is based on this disclosure Figure 7A An enlarged cross-section of the region marked "B".

[0021] Figure 9 The second cross-section, according to this disclosure, shows the configuration of region "B" after the hot riveting operation has been completed.

[0022] Figure 10 It is an exploded view of the assembly, which includes the frame, PCB and retainer.

[0023] Figure 11A It is a cross-section of the main body, PCB and retainer.

[0024] Figure 11B Depicting the assembled Figure 11A Items.

[0025] Figure 12 The dimensions of an example sensor according to this disclosure are depicted.

[0026] Figure 13AAn exploded view of an assembly including a flexible frame according to the present disclosure is depicted, wherein one end of a printed film is inserted between the upper and lower portions of the frame and the other end of the printed film is wound around the bottom surface of a compressible spring attached to the bottom of the frame.

[0027] Figure 13B A top view of one side of an folded printed film according to this disclosure is depicted. Detailed Implementation

[0028] This description is not intended to be a detailed list of all different ways in which this disclosure can be implemented or all features that can be added to this disclosure. For example, a feature shown with respect to one embodiment may be incorporated into other embodiments, and a feature shown with respect to a particular embodiment may be removed from said embodiment. Therefore, this disclosure contemplates that in some embodiments of this disclosure, any feature or combination of features set forth herein may be excluded or omitted. Furthermore, many variations and additions to the various embodiments suggested herein will be apparent to those skilled in the art, and such variations and additions do not depart from this disclosure. In other instances, well-known structures, interfaces, and processes have not been shown in detail so as not to unnecessarily obscure the invention. Nothing in this specification is intended to be construed as denying any part of the full scope of the invention. Therefore, the following description is intended to illustrate some specific embodiments of this disclosure, rather than exhaustively specifying all permutations, combinations, and variations thereof.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. The terminology used herein in describing this disclosure is for the purpose of describing particular aspects or embodiments only and is not intended to be limiting of this disclosure.

[0030] All publications, patent applications, patents, and other references cited herein are incorporated in their entirety for the purpose of teaching in relation to the sentences and / or paragraphs in which they are referenced. References to techniques used herein are intended to refer to techniques commonly understood in the art, including variations of those techniques or substitutions for equivalent techniques that would be obvious to a person skilled in the art.

[0031] U.S. Patent Application Serial No. 14 / 827,375 (“375 application”) discloses a device for measuring subepidermal capacitance using bipolar sensors, wherein the subepidermal capacitance corresponds to the moisture content of a target area of ​​a patient’s skin. 375 application also discloses arrays of these bipolar sensors of various sizes.

[0032] U.S. Patent Application Serial No. 15 / 134,110 discloses a device for measuring subepidermal water (SEM), wherein the device transmits and receives RF signals at a frequency of 32 kHz via a single coaxial sensor and generates a bioimpedance signal, and then converts the biocapacitance signal into an SEM value.

[0033] U.S. Patent Application Serial No. 13 / 942,649 discloses a compact perfusion scanner and a method for characterizing tissue health, the method incorporating optical sensors to monitor tissue blood perfusion measurements and blood oxygenation assays.

[0034] U.S. patent application serial numbers 14 / 827,375, 15 / 134,110 and 13 / 942,649 are incorporated herein by reference in their entirety.

[0035] Unless the context otherwise indicates, it is expressly intended that the various features of this disclosure described herein may be used in any combination. Furthermore, this disclosure also contemplates that in some embodiments of this disclosure, any features or combinations of features set forth herein may be excluded or omitted.

[0036] The methods disclosed herein include and encompass one or more steps or actions for implementing the described methods. Method steps and / or actions may be interchanged without departing from the scope of this disclosure. In other words, unless a specific order of steps or actions is required for proper operation of the embodiments, the order and / or use of specific steps and / or actions may be modified without departing from the scope of this disclosure.

[0037] As used in the specification and appended claims of this disclosure, unless the context clearly indicates otherwise, the singular forms “a”, “an” and “the” are intended to include the plural forms as well.

[0038] As used herein, “and / or” means and covers any and all possible combinations of one or more of the listed items, as well as the absence of combinations when interpreted in an alternative context (“or”).

[0039] When referring to measurable values ​​such as length, frequency, or SEM values, the terms “about” and “approximately” as used herein mean that the specified amount is subject to a variation of ±20%, ±10%, ±5%, ±1%, ±0.5%, or even ±0.1%.

[0040] As used herein, phrases such as “between X and Y” and “between approximately X and Y” should be interpreted as including both X and Y. As used herein, phrases such as “between approximately X and Y” mean “between approximately X and approximately Y” and phrases such as “from approximately X to Y” mean “from approximately X to approximately Y”.

[0041] As used in this article, the term "subepidermal water" or "SEM" refers to the increase in tissue fluid and localized edema caused by vascular leakage and other changes that modify the basic structure of damaged tissue in the presence of sustained stress, apoptosis, necrosis, and inflammatory processes.

[0042] As used in this article, the term "biocapacitance" refers to the physical property that reflects the relative permittivity of a tissue, i.e., how much electric field resistance is encountered in the tissue.

[0043] As used in this article, "patient" can be a human or animal subject.

[0044] As used herein, the term "parallel" describes a configuration in which the best-fit lines or planes of two objects have an approximately constant interval at a distance meaningful for the application. In some embodiments, the included angle of these best-fit lines or planes may be ±1 degree, ±5 degrees, or ±10 degrees.

[0045] As used herein, the term "plane" describes a configuration in which the distance between the actual surface of an object and the best-fit ideal plane is not critical to the object's function. In some embodiments, the distance between the actual surface and the ideal plane may be 0.254 mm (0.010 inches), 1.27 mm (0.050 inches), or 2.54 mm (0.100 inches).

[0046] As used in this article, the term "diameter" refers to the length of a straight line segment that passes through the center of a circle and whose endpoints lie on the circle. The diameter is equal to twice the radius of the circle.

[0047] As used herein, the term "ring" refers to a circular surface of revolution having a hole or opening at its center. As used herein, the term "concentric" refers to two or more objects having the same center or axis.

[0048] As used herein, the term "printed film" refers to a portion of a polymer film on which conductive elements have been printed.

[0049] As used in this article, the term "pogo pin" refers to a spring-loaded electrical connector mechanism.

[0050] Figure 1A A medical scanner 2 according to this disclosure is depicted. In one aspect, the medical scanner 2 is a SEM scanner. In another aspect, the medical scanner 2 is an SEM scanner for measuring biocapacitance. In one aspect, the nose of the device, indicated by the dashed circle 'A', is pressed against the patient's skin to perform SEM measurements. In another aspect, the nose of the device, indicated by the dashed circle 'A', is pressed against the patient's skin to perform biocapacitance measurements.

[0051] Figure 1BA connector 10 according to this disclosure is depicted, the connector comprising: Figure 1A The medical scanner includes a reusable component 150 and a detachable element 100 in a portion of region 'A'. In one aspect, the detachable element 100 includes a body 102 and a sensor formed by a central electrode 102a and an annular electrode 102b, wherein the central electrode 102a and the annular electrode 102b are concentric with respect to each other. The central electrode 102a has an outward-facing surface (in... Figure 1B (visible in) and inward-facing surfaces (in) Figure 1B (Not visible in the middle). Similarly, the annular electrode 102b has an outward-facing surface (in the middle). Figure 1B (visible in) and inward-facing surfaces (in) Figure 1B (Not visible in the middle).

[0052] In one aspect, the detachable element 100 includes sensors formed by a plurality of electrodes, such as up to two electrodes, up to three electrodes, up to four electrodes, up to five electrodes, up to six electrodes, up to seven electrodes, up to eight electrodes, up to nine electrodes, up to ten electrodes, up to eleven electrodes, or up to twelve electrodes. In another aspect, the detachable element 100 includes a plurality of sensors formed by a plurality of electrodes, wherein each sensor is formed by up to twelve electrodes, such as up to two electrodes, up to three electrodes, up to four electrodes, up to five electrodes, up to six electrodes, up to seven electrodes, up to eight electrodes, up to nine electrodes, up to ten electrodes, or up to eleven electrodes. In another aspect, the sensor is formed by an annular ring arranged around an inner circular electrode. In another aspect, the sensor is formed by two parallel strip electrodes. In another aspect, the sensor is formed by electrodes in the form of interdigitated fingers. In one aspect, the removable element 100 includes a body 102 and multiple sensors selected from the group consisting of multiple bioimpedance sensors, multiple pressure sensors, multiple light sensors, multiple temperature sensors, multiple pH sensors, multiple sweat sensors, multiple ultrasound sensors, multiple bone growth stimulant sensors, and multiple combinations of these sensors. In another aspect, the removable element 100 includes a body 102 and multiple light sensors. In another aspect, the removable element 100 further includes one or more light sources, said one or more light sources including a dual emitter configured to emit 660 nm light and 880 nm light. In another aspect, the reusable component 150 includes an alignment guide 158, the alignment guide's function being referenced... Figure 5 To describe in more detail. In this example, as indicated by the dashed lines, the removable element 100 engages with the reusable component via linear movement. In one aspect, the engaging movement includes rotation perpendicular to the dashed lines or twisting about the dashed lines. In another aspect, the removable element 100 includes an insulating cover on top of its electrodes, thereby forming a barrier between the electrodes and the patient's skin during measurement.

[0053] On the one hand, such as Figure 12 The sensor depicted is formed by an annular ring arranged around an inner circular electrode. In one aspect, the inner circular electrode is defined by a diameter D1. In one aspect, D1 is approximately 4.318 mm (0.17 inches). In one aspect, the annular ring is defined by an inner diameter D2 and an outer diameter D3. In one aspect, D2 is approximately 10.16 mm (0.4 inches). In one aspect, D3 is approximately 12.7 mm (0.5 inches). In one aspect, D3 is greater than 12.7 mm (0.5 inches), such as approximately 20.32 mm (0.8 inches). In one aspect, the gap between the inner circular electrode and the outer annular ring is approximately 2.921 mm (0.115 inches). In one aspect, the gap between the inner circular electrode and the outer annular ring is defined by the formula (D2-D1) / 2.

[0054] On one hand, a ground plane is provided. On one hand, the sensor is separated from the ground plane by a distance D4. On one hand, D4 is approximately 0.4064 mm (0.016 inches). On one hand, the ground plane has a diameter D5. On one hand, D5 is equal to D3. On one hand, D5 is greater than D3. On one hand, D5 is approximately 28.575 mm (1.125 inches).

[0055] In one aspect, the diameter of the central electrode 102a is 2.54 mm (0.1 inch). In another aspect, the diameter of the central electrode 102a is 2.794 mm (0.11 inch). In another aspect, the diameter of the central electrode 102a is 3.048 mm (0.12 inch). In another aspect, the diameter of the central electrode 102a is 3.302 mm (0.13 inch). In another aspect, the diameter of the central electrode 102a is 3.556 mm (0.14 inch). In another aspect, the diameter of the central electrode 102a is 3.81 mm (0.15 inch). In another aspect, the diameter of the central electrode 102a is 4.064 mm (0.16 inch). In another aspect, the diameter of the central electrode 102a is 4.318 mm (0.17 inch). In another aspect, the diameter of the central electrode 102a is 4.572 mm (0.18 inch). In one aspect, the diameter of the central electrode 102a is 4.826 mm (0.19 inches). In another aspect, the diameter of the central electrode 102a is 5.08 mm (0.2 inches). In another aspect, the diameter of the central electrode 102a is 5.588 mm (0.22 inches). In another aspect, the diameter of the central electrode 102a is 6.096 mm (0.24 inches). In another aspect, the diameter of the central electrode 102a is 6.604 mm (0.26 inches). In another aspect, the diameter of the central electrode 102a is 7.112 mm (0.28 inches). In another aspect, the diameter of the central electrode 102a is 7.62 mm (0.3 inches). In another aspect, the diameter of the central electrode 102a is 8.89 mm (0.35 inches). In another aspect, the diameter of the central electrode 102a is 10.16 mm (0.4 inches). In another aspect, the diameter of the central electrode 102a is 11.43 mm (0.45 inches). On one hand, the diameter of the central electrode 102a is 12.7 mm (0.5 inches).

[0056] In one aspect, the diameter of the central electrode 102a is at least 2.54 mm (0.1 inch). In another aspect, the diameter of the central electrode 102a is at least 2.794 mm (0.11 inch). In another aspect, the diameter of the central electrode 102a is at least 3.048 mm (0.12 inch). In another aspect, the diameter of the central electrode 102a is at least 3.302 mm (0.13 inch). In another aspect, the diameter of the central electrode 102a is at least 3.556 mm (0.14 inch). In another aspect, the diameter of the central electrode 102a is at least 3.81 mm (0.15 inch). In another aspect, the diameter of the central electrode 102a is at least 4.064 mm (0.16 inch). In another aspect, the diameter of the central electrode 102a is at least 4.318 mm (0.17 inch). In another aspect, the diameter of the central electrode 102a is at least 4.572 mm (0.18 inch). In one aspect, the diameter of the central electrode 102a is at least 4.826 mm (0.19 inches). In another aspect, the diameter of the central electrode 102a is at least 5.08 mm (0.2 inches). In another aspect, the diameter of the central electrode 102a is at least 5.588 mm (0.22 inches). In another aspect, the diameter of the central electrode 102a is at least 6.096 mm (0.24 inches). In another aspect, the diameter of the central electrode 102a is at least 6.604 mm (0.26 inches). In another aspect, the diameter of the central electrode 102a is at least 7.112 mm (0.28 inches). In another aspect, the diameter of the central electrode 102a is at least 7.62 mm (0.3 inches). In another aspect, the diameter of the central electrode 102a is at least 8.89 mm (0.35 inches). In another aspect, the diameter of the central electrode 102a is at least 10.16 mm (0.4 inches). In one aspect, the diameter of the center electrode 102a is at least 11.43 mm (0.45 inches). In another aspect, the diameter of the center electrode 102a is at least 12.7 mm (0.5 inches).

[0057] In one aspect, the diameter of the center electrode 102a is between 2.54 mm and 3.81 mm (between 0.1 inches and 0.15 inches). In another aspect, the diameter of the center electrode 102a is between 3.81 mm and 5.08 mm (between 0.15 inches and 0.2 inches). In another aspect, the diameter of the center electrode 102a is between 5.08 mm and 6.35 mm (between 0.2 inches and 0.25 inches). In another aspect, the diameter of the center electrode 102a is between 6.35 mm and 7.62 mm (between 0.25 inches and 0.3 inches). In another aspect, the diameter of the center electrode 102a is between 7.62 mm and 8.89 mm (between 0.3 inches and 0.35 inches). In another aspect, the diameter of the center electrode 102a is between 8.89 mm and 10.16 mm (between 0.35 inches and 0.4 inches). In one aspect, the diameter of the center electrode 102a is between 2.54 mm and 5.08 mm (between 0.1 inch and 0.2 inch). In another aspect, the diameter of the center electrode 102a is between 2.54 mm and 7.62 mm (between 0.1 inch and 0.3 inch). In another aspect, the diameter of the center electrode 102a is between 2.54 mm and 10.16 mm (between 0.1 inch and 0.4 inch). In another aspect, the diameter of the center electrode 102a is between 2.54 mm and 12.7 mm (between 0.1 inch and 0.5 inch). In another aspect, the diameter of the center electrode 102a is between 5.08 mm and 7.62 mm (between 0.2 inch and 0.3 inch). In another aspect, the diameter of the center electrode 102a is between 7.62 mm and 10.16 mm (between 0.3 inch and 0.4 inch). In one aspect, the diameter of the center electrode 102a is between 10.16 mm and 12.7 mm (between 0.4 inches and 0.5 inches). In another aspect, the diameter of the center electrode 102a is between 2.54 mm and 7.62 mm (between 0.1 inches and 0.3 inches). In another aspect, the diameter of the center electrode 102a is between 5.08 mm and 10.16 mm (between 0.2 inches and 0.4 inches). In another aspect, the diameter of the center electrode 102a is between 7.62 mm and 12.7 mm (between 0.3 inches and 0.5 inches). In another aspect, the diameter of the center electrode 102a is between 2.54 mm and 12.7 mm (between 0.1 inches and 0.5 inches).

[0058] In one aspect, the annular or ring-shaped electrode has an inner diameter and an outer diameter. In one aspect, the inner diameter of the ring electrode 102b is 2.54 mm (0.1 inch). In one aspect, the inner diameter of the ring electrode 102b is 5.08 mm (0.2 inch). In one aspect, the inner diameter of the ring electrode 102b is 7.62 mm (0.3 inch). In one aspect, the inner diameter of the ring electrode 102b is 10.16 mm (0.4 inch). In one aspect, the inner diameter of the ring electrode 102b is 12.7 mm (0.5 inch). In one aspect, the inner diameter of the ring electrode 102b is 15.26 mm (0.6 inch). In one aspect, the inner diameter of the ring electrode 102b is 17.78 mm (0.7 inch). In one aspect, the inner diameter of the ring electrode 102b is 20.32 mm (0.8 inch). In one aspect, the inner diameter of the ring electrode 102b is 22.86 mm (0.9 inch). In one aspect, the inner diameter of the ring electrode 102b is 25.4 mm (1.0 inch). In another aspect, the inner diameter of the ring electrode 102b is 30.48 mm (1.2 inch). In another aspect, the inner diameter of the ring electrode 102b is 35.56 mm (1.4 inch). In another aspect, the inner diameter of the ring electrode 102b is 40.64 mm (1.6 inch). In another aspect, the inner diameter of the ring electrode 102b is 45.72 mm (1.8 inch). In another aspect, the inner diameter of the ring electrode 102b is 50.8 mm (2.0 inch). In another aspect, the inner diameter of the ring electrode 102b is 63.5 mm (2.5 inch). In another aspect, the inner diameter of the ring electrode 102b is 76.2 mm (3.0 inch).

[0059] In one aspect, the inner diameter of the ring electrode 102b is at least 2.54 mm (0.1 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 5.08 mm (0.2 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 7.62 mm (0.3 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 10.16 mm (0.4 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 12.7 mm (0.5 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 15.26 mm (0.6 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 17.78 mm (0.7 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 20.32 mm (0.8 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 22.86 mm (0.9 inch). In one aspect, the inner diameter of the ring electrode 102b is at least 25.4 mm (1.0 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 30.48 mm (1.2 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 35.56 mm (1.4 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 40.64 mm (1.6 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 45.72 mm (1.8 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 50.8 mm (2.0 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 63.5 mm (2.5 inch). In another aspect, the inner diameter of the ring electrode 102b is at least 76.2 mm (3.0 inch).

[0060] In one aspect, the inner diameter of the ring electrode 102b is between 2.54 mm and 12.7 mm (between 0.1 inch and 0.5 inch). In another aspect, the inner diameter of the ring electrode 102b is between 2.54 mm and 25.4 mm (between 0.1 inch and 1 inch). In another aspect, the inner diameter of the ring electrode 102b is between 2.54 mm and 50.8 mm (between 0.1 inch and 2.0 inch). In another aspect, the inner diameter of the ring electrode 102b is between 2.54 mm and 76.2 mm (between 0.1 inch and 3.0 inch). In another aspect, the inner diameter of the ring electrode 102b is between 12.7 mm and 25.4 mm (between 0.5 inch and 1.0 inch). In another aspect, the inner diameter of the ring electrode 102b is between 12.7 mm and 38.1 mm (between 0.5 inch and 1.5 inch). In one aspect, the inner diameter of the ring electrode 102b is between 25.4 mm and 38.1 mm (between 1.0 inch and 1.5 inches). In another aspect, the inner diameter of the ring electrode 102b is between 38.1 mm and 50.8 mm (between 1.5 inches and 2.0 inches). In yet another aspect, the inner diameter of the ring electrode 102b is between 50.8 mm and 76.2 mm (between 2.0 inches and 3.0 inches).

[0061] In one aspect, the outer diameter of the ring electrode 102b is 2.54 mm (0.1 inch). In another aspect, the outer diameter of the ring electrode 102b is 5.08 mm (0.2 inch). In another aspect, the outer diameter of the ring electrode 102b is 7.62 mm (0.3 inch). In another aspect, the outer diameter of the ring electrode 102b is 10.16 mm (0.4 inch). In another aspect, the outer diameter of the ring electrode 102b is 12.7 mm (0.5 inch). In another aspect, the outer diameter of the ring electrode 102b is 15.26 mm (0.6 inch). In another aspect, the outer diameter of the ring electrode 102b is 17.78 mm (0.7 inch). In another aspect, the outer diameter of the ring electrode 102b is 20.32 mm (0.8 inch). In another aspect, the outer diameter of the ring electrode 102b is 22.86 mm (0.9 inch). In another aspect, the outer diameter of the ring electrode 102b is 25.4 mm (1.0 inch). In one aspect, the outer diameter of the ring electrode 102b is 30.48 mm (1.2 inches). In another aspect, the outer diameter of the ring electrode 102b is 35.56 mm (1.4 inches). In another aspect, the outer diameter of the ring electrode 102b is 40.64 mm (1.6 inches). In another aspect, the outer diameter of the ring electrode 102b is 45.72 mm (1.8 inches). In another aspect, the outer diameter of the ring electrode 102b is 50.8 mm (2.0 inches). In another aspect, the outer diameter of the ring electrode 102b is 63.5 mm (2.5 inches). In another aspect, the outer diameter of the ring electrode 102b is 76.2 mm (3.0 inches).

[0062] In one aspect, the outer diameter of the ring electrode 102b is at least 2.54 mm (0.1 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 5.08 mm (0.2 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 7.62 mm (0.3 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 10.16 mm (0.4 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 12.7 mm (0.5 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 15.26 mm (0.6 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 17.78 mm (0.7 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 20.32 mm (0.8 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 22.86 mm (0.9 inch). In another aspect, the outer diameter of the ring electrode 102b is at least 25.4 mm (1.0 inch). In one aspect, the outer diameter of the ring electrode 102b is at least 30.48 mm (1.2 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 35.56 mm (1.4 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 40.64 mm (1.6 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 45.72 mm (1.8 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 50.8 mm (2.0 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 63.5 mm (2.5 inches). In another aspect, the outer diameter of the ring electrode 102b is at least 76.2 mm (3.0 inches).

[0063] In one aspect, the outer diameter of the ring electrode 102b is between 2.54 mm and 12.7 mm (between 0.1 inch and 0.5 inch). In another aspect, the outer diameter of the ring electrode 102b is between 2.54 mm and 25.4 mm (between 0.1 inch and 1 inch). In another aspect, the outer diameter of the ring electrode 102b is between 2.54 mm and 50.8 mm (between 0.1 inch and 2.0 inch). In another aspect, the outer diameter of the ring electrode 102b is between 2.54 mm and 76.2 mm (between 0.1 inch and 3.0 inch). In another aspect, the outer diameter of the ring electrode 102b is between 12.7 mm and 25.4 mm (between 0.5 inch and 1.0 inch). In another aspect, the outer diameter of the ring electrode 102b is between 12.7 mm and 38.1 mm (between 0.5 inch and 1.5 inch). In one aspect, the outer diameter of the ring electrode 102b is between 25.4 mm and 38.1 mm (between 1.0 inch and 1.5 inches). In another aspect, the outer diameter of the ring electrode 102b is between 38.1 mm and 50.8 mm (between 1.5 inches and 2.0 inches). In yet another aspect, the outer diameter of the ring electrode 102b is between 50.8 mm and 76.2 mm (between 2.0 inches and 3.0 inches).

[0064] On one hand, D4 is 0.254 mm (0.01 inch). On another hand, D4 is 0.2794 mm (0.011 inch). On another hand, D4 is 0.3048 mm (0.012 inch). On another hand, D4 is 0.3302 mm (0.013 inch). On another hand, D4 is 0.3556 mm (0.014 inch). On another hand, D4 is 0.381 mm (0.015 inch). On another hand, D4 is 0.4064 mm (0.016 inch). On another hand, D4 is 0.4318 mm (0.017 inch). On another hand, D4 is 0.4572 mm (0.018 inch). On another hand, D4 is 0.4826 mm (0.019 inch). On another hand, D4 is 0.508 mm (0.02 inch). On another hand, D4 is 0.635 mm (0.025 inch). On one hand, the D4 is 0.762mm (0.03 inches).

[0065] In one aspect, D4 is at least 0.254 mm (0.01 inch). In another aspect, D4 is at least 0.2794 mm (0.011 inch). In another aspect, D4 is at least 0.3048 mm (0.012 inch). In another aspect, D4 is at least 0.3302 mm (0.013 inch). In another aspect, D4 is at least 0.3556 mm (0.014 inch). In another aspect, D4 is at least 0.381 mm (0.015 inch). In another aspect, D4 is at least 0.4064 mm (0.016 inch). In another aspect, D4 is at least 0.4318 mm (0.017 inch). In another aspect, D4 is at least 0.4572 mm (0.018 inch). In another aspect, D4 is at least 0.4826 mm (0.019 inch). In another aspect, D4 is at least 0.508 mm (0.02 inch). On one hand, D4 is at least 0.635 mm (0.025 inches). On the other hand, D4 is at least 0.762 mm (0.03 inches).

[0066] On one hand, the D4 is between 0.254mm and 0.508mm (between 0.01 inches and 0.02 inches). On another hand, the D4 is between 0.254mm and 0.762mm (between 0.01 inches and 0.03 inches). On another hand, the D4 is between 0.381mm and 0.508mm (between 0.015 inches and 0.02 inches). On another hand, the D4 is between 0.381mm and 0.762mm (between 0.015 inches and 0.03 inches). On another hand, the D4 is between 0.508mm and 0.762mm (between 0.02 inches and 0.03 inches).

[0067] On one hand, the D5's dimensions are between 2.54mm and 12.7mm (between 0.1 inches and 0.5 inches). On another hand, the D5's dimensions are between 2.54mm and 25.4mm (between 0.1 inches and 1 inch). On another hand, the D5's dimensions are between 2.54mm and 50.8mm (between 0.1 inches and 2.0 inches). On another hand, the D5's dimensions are between 2.54mm and 76.2mm (between 0.1 inches and 3.0 inches). On another hand, the D5's dimensions are between 12.7mm and 25.4mm (between 0.5 inches and 1.0 inch). On another hand, the D5's dimensions are between 12.7mm and 38.1mm (between 0.5 inches and 1.5 inches). On another hand, the D5's dimensions are between 25.4mm and 38.1mm (between 1.0 inch and 1.5 inches). On another hand, the D5's dimensions are between 38.1mm and 50.8mm (between 1.5 inches and 2.0 inches). On one hand, the D5 is between 50.8mm and 76.2mm (between 2.0 inches and 3.0 inches).

[0068] Figure 2 Based on this disclosure Figure 1B A perspective view of the bottom surface of the removable element 100. In one aspect, the removable element 100 includes a body 102, which in this example has four wings 104 separated by gaps 106 and an alignment feature 108. In one aspect, the body 102 includes up to twenty wings, such as up to five wings, up to six wings, up to seven wings, up to eight wings, up to nine wings, up to ten wings, up to eleven wings, up to twelve wings, up to thirteen wings, up to fourteen wings, up to fifteen wings, up to sixteen wings, up to seventeen wings, up to eighteen wings, or up to nineteen wings. In one aspect, the alignment feature 108 is configured to cooperate with the alignment guide 158 of the reusable component 150 (e.g., Figure 3 (As shown). On one hand, gap 106 cannot mate with alignment guide 158, for example, because gap 106 is narrower than alignment feature 108.

[0069] On one hand, contactor 124 is attached to a printed circuit board (PCB) 120 coupled to body 102. On the other hand, multiple contactors are coupled to body 102, such as up to one hundred contactors, up to ninety contactors, up to eighty contactors, up to seventy contactors, up to sixty contactors, up to fifty contactors, up to forty contactors, up to thirty contactors, up to twenty contactors, up to fifteen contactors, up to ten contactors, up to nine contactors, up to eight contactors, up to seven contactors, up to six contactors, up to five contactors, up to four contactors, or up to three contactors. In this example, each contactor 124 has two independently movable cantilever elements 126. In one aspect, each contactor 124 includes up to ten cantilever elements, such as up to nine cantilever elements, up to eight cantilever elements, up to seven cantilever elements, up to six cantilever elements, up to five cantilever elements, up to four cantilever elements, or up to three cantilever elements. In another aspect, at least some of the wings 104 have a retention feature 110 extending outward from the inner surface of the wing 104 in this example. In another aspect, each wing 104 has a retention feature 110. In another aspect, the retention feature 110 is a recess. In another aspect, each contactor 124 provides an electrical connection between the electrodes of the body 102 and the PCB 120.

[0070] Figure 3 This is a perspective view of the top surface of the reusable component 150 according to the present disclosure. In one aspect, the reusable component 150 includes a body 152 coupled to a PCB having a top surface 162. In another aspect, a plurality of planar contact surfaces are coupled to surface 162, such as up to 100 planar contact surfaces, up to 90 planar contact surfaces, up to 80 planar contact surfaces, up to 70 planar contact surfaces, up to 60 planar contact surfaces, up to 50 planar contact surfaces, up to 40 planar contact surfaces, up to 30 planar contact surfaces, up to 20 planar contact surfaces, up to 10 planar contact surfaces, up to 9 planar contact surfaces, up to 8 planar contact surfaces, up to 7 planar contact surfaces, up to 6 planar contact surfaces, up to 5 planar contact surfaces, up to 4 planar contact surfaces, or up to 3 planar contact surfaces.

[0071] In one aspect, three planar contact surfaces 160a, 160b, and 160c are coupled to surface 162. In another aspect, contact surfaces 160a, 160b, and 160c are formed as copper layers on surface 162 and are substantially coplanar with surface 162 (within a few thousandths of an inch). Contact surfaces 160a, 160b, and 160c are conductive and, in one aspect, connected to a circuit that is electrically insulated from each other. In another aspect, contact surfaces 160a, 160b, and 160c include a surface coating of a noble metal, such as gold, which may be mixed with other materials to improve physical properties, such as abrasion resistance.

[0072] On one hand, the contact surfaces 160a, 160b, and 160c are each planar and located on a common plane parallel to the retaining groove.

[0073] In one aspect, contactor 124 includes a conductive material. In another aspect, contactor 124 includes a conductive compressible foam. In another aspect, contactor 124 is electrically attached to PCB 120 and is configured to... Figure 2 (As shown) When mounted on the reusable component 150, the contactor 124 compresses against any one of the three planar contact surfaces 160a, 160b, and 160c. In one aspect, the contactor 124 is configured to compress against any one of the three planar contact surfaces 160a, 160b, and 160c when the removable component 100 (e.g., Figure 2 When mounted on the reusable component 150, the component compresses against any one of the three planar contact surfaces 160a, 160b and 160c.

[0074] In one aspect, contactor 124 comprises a non-conductive material. In another aspect, contactor 124 comprises a non-conductive compressible foam. In another aspect, contactor 124 comprises a non-conductive spring element and a separate conductive element, wherein the conductive element is electrically attached at one end to PCB 120 and to the free end of the non-conductive spring element. In another aspect, when the removable element 100 (e.g., Figure 2 When mounted on the reusable assembly 150 (as shown), a conductive element exposed at the free end of a non-conductive spring element is held against any one of the three planar contact surfaces 160a, 160b, and 160c by the non-conductive spring element. In one respect, the conductive element is a wire.

[0075] In one aspect, the cantilever element 126 includes a conductive material. In another aspect, the cantilever element 126 includes a conductive compressible foam. In yet another aspect, the cantilever element 126 includes a metal helical spring.

[0076] In one aspect, the cantilever element 126 comprises a non-conductive material. In another aspect, the cantilever element 126 comprises a non-conductive compressible foam.

[0077] On one hand, contactor 124 includes a compressible spring pin, wherein when the removable element 100 (e.g., Figure 2 When mounted on reusable component 150 (as shown), the spring pin has a suitable height in its compressed state for electrically connecting PCB 120 to planar contact surfaces 160a, 160b and 160c.

[0078] Figure 4 This is a side view of a reusable component 150 according to the present disclosure. In one aspect, the reusable component 150 includes a retaining groove 154 and an alignment guide 158. In one aspect, the retaining groove 154 extends only a portion of the circumference of the reusable component 150. Also in one aspect, the retaining feature 110 (e.g., Figure 2 (as shown) surrounds the removable element 100 (e.g., Figure 2 The circumference of the recess 154 (as shown) extends only a portion therefrom. In one aspect, the retaining groove 154 is partially configured to be flush with or protrude from the element. In another aspect, the retaining groove 154 may have features selected to align with the retaining feature 110 (e.g., Figure 2 Any geometry in which one or more retention features interact, each retention feature having a complementary geometry, so as to allow the removable element 100 (e.g., [shown]) under a defined load. Figure 2 (As shown) is fixed on the reusable component 150.

[0079] Figure 5 This is a side view of the removable element 100 that mates with the reusable component 150 according to the present disclosure. In one aspect, the alignment feature 108 mates with the alignment guide 158.

[0080] Figure 6 Based on this disclosure Figure 5 A cross-section of the side view. The retaining feature 110 engages with the retaining groove 154. In one aspect, the contactor 124 is coupled to the bottom surface 122 of the PCB 120. In another aspect, the free length of the contactor 124 is greater than the spacing between the bottom surface 122 and the top surface 162 of the PCB 164.

[0081] Figure 7A Based on this disclosure Figure 1B Another perspective view of the bottom surface of the removable component 100. Figure 8 The image shows a magnified view of region 'B'.

[0082] Figure 7B Based on this disclosure Figure 7AA partially exploded view of the removable component 100. In one aspect, the body 102 has a central hole 190 and several retaining recesses 180 surrounding the periphery 192. In another aspect, each retaining recess 180 has a riveting rod 182 and a reference surface 184.

[0083] In one aspect, PCB 120 has a bottom surface 122 with an outer edge 122a. In one aspect, the outer edge 122a is circular. In one aspect, the outer edge 122a can be of any shape. In one aspect, contactor 124 has flanges 128 extending beyond the outer edge 122a. In one aspect, each flange 128 has a center hole 128a and a top surface 128b. In one aspect, when PCB 120 contacts body 102, the center hole 128a will mate with the rod 182 as indicated by the dashed arrow, and the top surface 128b will contact reference surface 184.

[0084] On one hand, the arrangement of the PCB 120 fits tightly into the hole 190, wherein the flange 128 extending beyond the edge of the outer edge 122a and the reference surface adjacent to the hole 190 allow the PCB 120 to be inserted into the hole 190 from below. On the other hand, by selecting the top surface 153 of the body 102 from the reference surface 184 (in... Figure 7B Invisible in Figure 3 The appropriate offset distance (shown in the diagram) is used for the surface 162 of PCB 120 (in the diagram). Figure 7B Invisible in Figure 3 (As shown in the diagram) It can remain coplanar with the top surface 153 or remain above or below the top surface 153 by a defined offset. In one aspect, the distance from the reference surface 184 to the top surface 153 can be equal to, greater than, or less than the thickness of the PCB 120. In another aspect, one or more flanges of the flanges 128 can be functionally replaced by other elements not integrated with the contactor 124, such as shaped metal tabs coupled to the PCB 120 and extending beyond the outer edge 122a.

[0085] Figure 8 It is based on this disclosure Figure 7A An enlarged cross-section of the region marked 'B' is shown. On one side, the top surface 128b, which contacts the reference surface 184 and the rod 182 passing through the central hole 128a, is shown.

[0086] exist Figure 8 In this configuration, the cantilever element 126 is formed by a base segment 126e, for example, coupled to the PCB 120 via soldering. The cantilever element includes a first linear segment 126a, an angled coupler 126b, a second linear segment 126c, and a bent contact segment 126d. In one aspect, when... Figure 1B The indicated removable component 100 (e.g., such as...) Figure 1B When the bent contact section 126d is placed together with the reusable component 150, the contact plane contact surface 160a (e.g., as shown) will contact the reusable component 150. Figure 3 (As shown). On the one hand, in cases such as Figure 6 As can be seen, when the free height of contactor 124 is greater than the final gap between surfaces 122 and 166, contactor 124 must be compressed as removable element 100 (e.g., as...). Figure 1B As shown, it is placed on a reusable component 150 (e.g., such as...). Figure 1B As shown. On one hand, during this compression, the first linear segment 126a, the angle coupler 126b, and the second linear segment 126c of the cantilever element will elastically deform, and the angle 127 between segments 126a and 126c will decrease. On another hand, for example, when the first linear segment 126a is shorter than the second linear segment 126c, in Figure 8 In the reference frame, the curved contact section 126d contacts the planar contact surface 160a (e.g., as shown in the image). Figure 3 The contact point between the two surfaces (as shown) will move in an arc with both vertical and horizontal movement. On one hand, the horizontal movement creates a curved contact section 126d and a planar contact surface 160a (e.g., as shown). Figure 3 The desired sliding contact between the contact segment 126d and the planar contact surface 160a improves the quality and reliability of the electrical contact between them.

[0087] On one hand, contactor 124 can be configured such that when surfaces 122 and 162 (e.g., Figure 3 Compression is achieved between components on PCB 120 and reusable components on reusable assembly 150 (e.g., shown) during compression. Figure 3 The conductive element shown (e.g., planar contact surface 160a) Figure 3 Any compliant element that provides the same function of electrical connection between (as shown). In one aspect, contactor 124 can be any compliant element having a conductive portion such as a spring pin, a helical spring, a conductive foam pad, or a directional conductive adhesive.

[0088] On the one hand, the removable component 100 and the reusable component 150 (e.g., Figure 1B (as shown) can be configured such that the removable element 100 and the reusable component 150 (e.g., Figure 1B The action of the contactor 124 (as shown) causes a torsional or sliding motion, which causes the contactor 124 to contact the planar contact surface 160a (e.g., Figure 3 (As shown) washing contact.

[0089] Figure 9This disclosure shows a second cross-section of the configuration of region 'B' after the hot riveting operation has been completed. On one hand, rod 182 (e.g., Figure 7B (As shown) For example, it has been reshaped by thermal riveting to form a cover 132a with an enlarged diameter that overlaps with the flange 128, thereby securing the bottom surface 122 of the PCB 120 to the body 102. On one hand, the PCB 120 can be mechanically attached, for example, by fasteners ( Figure 9 (not shown in the image) or by clamping, for example, by inserting a retaining fitting ( Figure 9 (not shown), by bonding, for example, UV-cured cyanoacrylate ( Figure 9 (not shown) or secured to the body 102 by any attachment method known to those skilled in the art.

[0090] Figure 10 This is an exploded view of assembly 200, which includes body 102, PCB 120, and retainer 230. In one aspect, body 102 is part of the device housing. In another aspect, assembly 200 is a disposable accessory to the device.

[0091] The body 102 includes an opening 213, which in this example is a circular through-hole penetrating from the first surface 212 to the second surface 211. In one aspect, the opening 213 is a notch or other open shape and may have any shape defined by a perimeter 214. In this example, there is a lip or surface 216 recessed from the second surface 211. In this example, the distance between surface 216 and the first surface 212 is equal to the thickness of the PCB 120. In one aspect, the spacing between surfaces 212 and 216 depends on the configuration of the retainer 230. The diameter of surface 216 may be defined by a perimeter 218. In one aspect, surface 216 coincides with the second surface 211. In one aspect, surface 216 includes a plurality of separate surfaces adjacent to the opening 213. Figure 10 (not shown in the image), where multiple individual surfaces may be coplanar or may be displaced from each other.

[0092] On one hand, PCB 120 has a thickness of 0.127 mm (0.005 inches). On another hand, PCB 120 has a thickness of 0.254 mm (0.01 inches). On another hand, PCB 120 has a thickness of 0.3048 mm (0.012 inches). On another hand, PCB 120 has a thickness of 0.3556 mm (0.014 inches). On another hand, PCB 120 has a thickness of 0.4064 mm (0.016 inches). On another hand, PCB 120 has a thickness of 0.4572 mm (0.018 inches). On another hand, PCB 120 has a thickness of 0.508 mm (0.02 inches). On another hand, PCB 120 has a thickness of 0.635 mm (0.025 inches). On another hand, PCB 120 has a thickness of 0.762 mm (0.03 inches). On one hand, PCB 120 has a thickness of 1.016 mm (0.04 inches). On the other hand, PCB 120 has a thickness of 1.27 mm (0.05 inches).

[0093] In one aspect, the thickness of PCB 120 is at least 0.127 mm (0.005 inches). In another aspect, the thickness of PCB 120 is at least 0.254 mm (0.01 inches). In another aspect, the thickness of PCB 120 is at least 0.3048 mm (0.012 inches). In another aspect, the thickness of PCB 120 is at least 0.3556 mm (0.014 inches). In another aspect, the thickness of PCB 120 is at least 0.4064 mm (0.016 inches). In another aspect, the thickness of PCB 120 is at least 0.4572 mm (0.018 inches). In another aspect, the thickness of PCB 120 is at least 0.508 mm (0.02 inches). In another aspect, the thickness of PCB 120 is at least 0.635 mm (0.025 inches). In another aspect, the thickness of PCB 120 is at least 0.762 mm (0.03 inches). On one hand, the thickness of PCB 120 is at least 1.016 mm (0.04 inches). On the other hand, the thickness of PCB 120 is at least 1.27 mm (0.05 inches).

[0094] On one hand, the thickness of PCB 120 is between 0.127mm and 0.254mm (between 0.005 inches and 0.01 inches). On another hand, the thickness of PCB 120 is between 0.127mm and 0.381mm (between 0.005 inches and 0.015 inches). On another hand, the thickness of PCB 120 is between 0.127mm and 0.508mm (between 0.005 inches and 0.02 inches). On another hand, the thickness of PCB 120 is between 0.127mm and 0.635mm (between 0.005 inches and 0.025 inches). On another hand, the thickness of PCB 120 is between 0.127mm and 0.762mm (between 0.005 inches and 0.03 inches). On one hand, the thickness of PCB 120 is between 0.127mm and 1.016mm (between 0.005 inches and 0.04 inches). On another hand, the thickness of PCB 120 is between 0.127mm and 1.27mm (between 0.005 inches and 0.05 inches). On another hand, the thickness of PCB 120 is between 0.254mm and 0.381mm (between 0.01 inches and 0.015 inches). On another hand, the thickness of PCB 120 is between 0.254mm and 0.508mm (between 0.01 inches and 0.02 inches). On another hand, the thickness of PCB 120 is between 0.254mm and 0.635mm (between 0.01 inches and 0.025 inches). On another hand, the thickness of PCB 120 is between 0.254mm and 0.762mm (between 0.01 inches and 0.03 inches). On one hand, the thickness of PCB 120 is between 0.254mm and 1.016mm (between 0.01 inches and 0.04 inches). On another hand, the thickness of PCB 120 is between 0.254mm and 1.27mm (between 0.01 inches and 0.05 inches). On another hand, the thickness of PCB 120 is between 0.381mm and 0.508mm (between 0.015 inches and 0.02 inches). On another hand, the thickness of PCB 120 is between 0.381mm and 0.635mm (between 0.015 inches and 0.025 inches). On another hand, the thickness of PCB 120 is between 0.381mm and 1.27mm (between 0.015 inches and 0.05 inches). On another hand, the thickness of PCB 120 is between 0.508mm and 0.762mm (between 0.02 inches and 0.03 inches). On the one hand, the thickness of PCB 120 is between 0.508mm and 1.27mm (between 0.02 inches and 0.05 inches).On one hand, the thickness of PCB 120 is between 0.762mm and 1.016mm (between 0.03 inches and 0.04 inches). On the other hand, the thickness of PCB 120 is between 0.762mm and 1.27mm (between 0.03 inches and 0.05 inches). On the other hand, the thickness of PCB 120 is between 1.016mm and 1.27mm (between 0.04 inches and 0.05 inches).

[0095] In this example, PCB 120 is a flat substrate made of a typical non-conductive material, such as FR4, used in printed circuit board manufacturing. In one aspect, PCB 120 is a sensor. In another aspect, the sensor is selected from the group consisting of: bioimpedance sensors, photodetectors, temperature sensors, pH sensors, sweat sensors, ultrasound sensors, bone growth stimulant sensors, and combinations thereof. PCB 120 has a bottom surface 122 and a top surface 224 parallel to and spaced apart from the bottom surface 122 by a certain thickness. PCB 120 has a periphery 226, which in this example is circular and matches the surface 216 of the body 102. In one aspect, the shape of the periphery 226 is arbitrary. In one aspect, the shape of the periphery 226 is elliptical. In another aspect, the shape of the periphery 226 is square.

[0096] The retainer 230 includes a body 232 and a plurality of tabs 234, the tabs being configured such that when the retainer 230 is attached to the PCB 120, a portion of the retainer 230 extends beyond the periphery of the PCB 120. When the connected PCB-retainer subassembly is inserted into the opening 213, the tabs 234 are positioned and form a contact surface 216.

[0097] On one hand, retainer 230 is strictly a mechanical positioning element, which can be soldered to PCB 120 or attached by any other method including adhesives and mechanical attachments such as rivets or screws. On the other hand, a portion of retainer 230 is intended to be associated with external circuitry elements (and body 102). Figure 10 (Not shown) Conductive circuit elements with conductive contacts, such as spring contactor 124. In one aspect, retainer 230 is an assembly comprising one or more conductive elements and one or more non-conductive elements. In one aspect, retainer 230 is formed of metal. In another aspect, retainer 230 is formed of a non-metallic material such as plastic.

[0098] Figure 11A yes Figure 10The body 102, PCB 120, and retainer 230 are aligned cross-sections when separated from each other in the "exploded" view. In this example, the body 102 includes a retaining feature 208 formed as part of the body 102, the function of which is described in

[0097] below.

[0099] Figure 11B yes Figure 11A The cross-section of the body 102, PCB 120, and retainer 230 after they are assembled into assembly 200. In this example, surface 216 coincides with the second surface of body 102. In this example, Figure 11A The retaining feature 208 has been deformed, for example by thermoforming or ultrasonic riveting, to cover a portion of the retainer 230, specifically a portion of one or more tabs in the tabs 234. On the other hand, other retaining mechanisms are used, such as applying an adhesive or sealant over one or more tabs in the tabs 234 and a portion of the body 102, to retain the retainer-PCB subassembly in the frame.

[0100] Figure 13A This is an exploded view of an assembly 300 including a main body 310 having an upper portion 310a and a lower portion 310b connected by a flexible arm 310c. The upper portion 310a includes an opening 313, which in this example is a circular through-hole. The lower portion 310b is attached to its bottom surface to a compressible spring element 320, which allows both the lower portion 310b and the flexible arm 310c to move when a downward pressure is applied. In one aspect, the upper portion 310a and the lower portion 310b can be reversibly secured by a tab or other locking mechanism. In another aspect, the assembly 300 is formed as a cover, serving as a PCB 120 (e.g., ...) that can be inserted into the main body 102. Figure 2 (As shown).

[0101] Assembly 300 further includes a printed film 330 having a tab portion 330a and a non-tab portion 330b. A center electrode 350a and an external electrode 350b (e.g., Figure 13B (As shown) has been printed on the top of the tab portion 330a. In this example, the tab portion 330a is inserted between the upper portion 310a and the lower portion 310b, such that after full insertion, the electrodes 350a and 350b (e.g., Figure 13B (As shown) is exposed on the upper surface of the body 310 through opening 313. The non-contact portion 330b is folded or bent such that the end of the non-contact portion 330b wraps around the bottom surface of the compressible spring element 320 and can be attached to said bottom surface. On one hand, pressure is applied against the patient's skin to the electrodes 350a and 350b (e.g., exposed through opening 313). Figure 13B The main body 310 (as shown) is used for SEM measurement.

[0102] Figure 13B This is a top view of one side of the printed film 330 before bending or folding. In this example, the non-contact portion 330b of the printed film 330 includes three contact pads 340a, 340b, and 340c. The center electrode 350a is connected to the contact pad 340a via a conductive trace 360a. Similarly, the outer electrode 350b is connected to the contact pad 340b via a conductive trace 360b. When 310a (e.g., Figure 13A When the upper part of the electrode (as shown) is pressed onto the patient's skin, measurements can be taken using electrodes 350a and 350b.

[0103] On one hand, the printed film 330 includes a flexible plastic material. In this regard, the flexible plastic material is selected from the group consisting of: polyvinyl naphthalene (PEN), polycarbonate (PC), polyethylene terephthalate (PET), polyarylate (PAR), polyethersulfone (PES), fluorene polyester (FPE), polyimide (PI), and combinations thereof. On the other hand, the printed film 330 includes a non-plastic flexible material.

[0104] In one aspect, the thickness of the printed film 330 is 0.5 mm (0.02 inches). In another aspect, the thickness of the printed film 330 is 0.4 mm (0.016 inches). In another aspect, the thickness of the printed film 330 is 0.3 mm (0.012 inches). In another aspect, the thickness of the printed film 330 is 0.25 mm (0.01 inches). In another aspect, the thickness of the printed film 330 is at least 0.2 mm (0.008 inches). In one aspect, the thickness of the printed film 330 is at least 0.5 mm (0.02 inches). In another aspect, the thickness of the printed film 330 is at least 0.4 mm (0.016 inches). In another aspect, the thickness of the printed film 330 is at least 0.3 mm (0.012 inches). In another aspect, the thickness of the printed film 330 is at least 0.25 mm (0.01 inches). In another aspect, the thickness of the printed film 330 is at least 0.2 mm (0.008 inches). In one aspect, the thickness of the printed film 330 is between 0.4 mm and 0.5 mm (0.02 and 0.016 inches). In another aspect, the thickness of the printed film 330 is between 0.3 mm and 0.4 mm (0.012 and 0.016 inches). In another aspect, the thickness of the printed film 330 is between 0.2 mm and 0.3 mm (0.008 and 0.012 inches). In another aspect, the thickness of the printed film 330 is between 0.25 mm and 0.35 mm (0.01 and 0.014 inches). In yet another aspect, the thickness of the printed film 330 is between 0.2 mm and 0.5 mm (0.008 and 0.02 inches).

[0105] In one aspect, the printed film 330 is cut from a larger flexible sheet. In another aspect, prior to cutting, electrodes 350a and 350b, conductive traces 360a and 360b, and contact pads 340a, 340b, and 340c are printed onto one surface of the larger flexible sheet. In another aspect, more than one printed film 330 is cut from the same flexible sheet. In another aspect, electrodes 350a and 350b, conductive traces 360a and 360b, and contact pads 340a, 340b, and 340c are printed onto one surface of the flexible sheet using conductive ink prior to cutting. In another aspect, electrodes 350a and 350b, conductive traces 360a and 360b, and contact pads 340a, 340b, and 340c are printed onto one surface of the flexible sheet using a 2D or 3D printing process known in the art suitable for manufacturing printed electronic devices. In another aspect, each printed film 330 is die-cut from a larger flexible sheet. On one hand, electrodes 350a and 350b, conductive traces 360a and 360b, and contact pads 340a, 340b, and 340c are printed on a pre-cut block of the film.

[0106] As will be apparent from the foregoing, the present invention can be embodied in various ways, including but not limited to the following:

[0107] Example 1. A removable element for use with a reusable assembly having a retention groove and an alignment guide, and a planar contact surface parallel to the retention groove, the removable element comprising: a body including a retention feature configured to engage the retention groove; and an electrical contactor coupled to the body, wherein the contactor includes a cantilever element configured to contact the planar contact surface when the retention feature engages with the retention groove, wherein the cantilever element is configured to slide along the contact surface when the removable element is placed together with the reusable assembly.

[0108] Example 2. The detachable element according to Example 1, wherein the detachable element is placed together with the reusable component along a path perpendicular to the planar contact surface.

[0109] Example 3. The removable element according to Example 1, wherein the retaining feature extends around a portion of the circumference of the removable element.

[0110] Example 4. The detachable element according to Example 1, wherein the body includes an alignment feature configured to cooperate with the alignment guide of the reusable component, wherein the retention feature cannot engage the retention groove when the alignment feature does not cooperate with the alignment guide.

[0111] Example 5. The detachable element according to Example 1, wherein the body further includes a sensor comprising two electrodes, wherein the sensor is electrically connected to the electrical contactor.

[0112] Example 6. The detachable element according to Example 5, wherein the body further includes an insulating cover layer disposed above the sensor.

[0113] Example 7. The detachable element according to Example 1, wherein the body further includes a light sensor and a light source, wherein the light sensor and the light source are electrically connected to the electrical contactor.

[0114] Example 8. The detachable element according to Example 1, wherein the light source includes a dual emitter configured to emit 660nm light and 880nm light.

[0115] Example 9. A connector comprising: a reusable component including a retaining groove and an electrical contact surface parallel to the retaining groove; and a removable element including a body having a retaining feature configured to engage the retaining groove and an electrical contactor coupled to the body, wherein the contactor includes a compliant element configured to contact the contact surface of the reusable component when the retaining feature of the removable element engages with the retaining groove of the reusable component and to slide along the contact surface when the removable element is placed together with the reusable component.

[0116] Example 10. The connector according to Example 9, wherein the body of the reusable component includes an alignment guide; the removable element includes an alignment feature configured to engage with the alignment guide when the retention feature of the removable element engages with the retention groove of the reusable component; and when the alignment feature does not engage with the alignment guide, the retention feature cannot engage the retention groove.

[0117] Example 11. The connector according to Example 9, wherein the compliant element includes: a base section coupled to the body; a first linear section coupled to the base section; a second linear section coupled to the first linear section; and a contact section coupled to the second linear section, wherein compression of the compliant element in a first direction causes the contact section to move in a second direction perpendicular to the first direction.

[0118] Example 12. A removable element comprising: a body including a hole and a retaining recess, wherein the retaining recess includes a reference surface; and a printed circuit board assembly (PCBA) including a printed circuit board (PCB) having an outer edge and a contactor coupled to the PCB, wherein a portion of the contactor extends beyond the outer edge of the PCB, and wherein the portion of the contactor extending beyond the outer edge of the PCB contacts the reference surface.

[0119] Example 13. The detachable component according to Example 12, wherein the body includes a top surface; the PCB includes a thickness; and the reference surface is parallel to the top surface and offset relative to the top surface by a distance from the reference surface to the top surface, and the distance is equal to the thickness of the PCB.

[0120] Example 14. The detachable component according to Example 12, wherein the PCB is a sensor.

[0121] Example 15. The detachable component according to Example 14, wherein the PCB is selected from the group consisting of: bioimpedance sensors, photodetectors, temperature sensors, pH sensors, sweat sensors, ultrasound sensors, bone growth stimulant sensors, and combinations thereof.

[0122] Example 16. The removable component according to Example 12, wherein the PCB is inserted into the retaining recess and held in place by a retainer comprising a plurality of tabs.

[0123] Example 17. The detachable element according to Example 16, wherein the retainer is a mechanical positioning element.

[0124] Example 18. The detachable element according to Example 16, wherein the retainer is a conductive circuit element.

[0125] Example 19. The removable element according to Example 16, wherein the retainer includes one or more conductive elements and one or more non-conductive elements.

[0126] Example 20. The removable element according to Example 16, wherein the retainer includes a deformable retaining feature configured to cover a portion of one or more tabs of the retainer.

[0127] Example 21. The detachable element according to Example 5, wherein the two electrodes consist of a central electrode and an annular electrode, wherein the central electrode and the annular electrode are concentrically oriented.

[0128] Example 22. The detachable component according to Example 21, wherein the diameter of the center electrode is approximately 4.318 mm (0.17 inches).

[0129] Example 23. The detachable element according to Example 21, wherein the annular electrode has an inner diameter of about 10.16 mm (0.4 inches) and an outer diameter of about 12.7 mm (0.5 inches).

[0130] Example 24. The detachable element according to Example 21 further includes a ground plane, wherein the distance between the two electrodes and the ground plane is approximately 0.4064 mm (0.016 inches).

[0131] Example 25. The detachable element according to Example 21, wherein the gap between the two electrodes is approximately 2.921 mm (0.0115 inches).

[0132] Example 26. The detachable component according to Example 24, wherein the diameter of the grounding plane is approximately 12.7 mm (0.5 inches).

[0133] Example 27. A detachable element comprising: a body including an upper portion and a lower portion connected by a flexible arm, wherein the upper portion includes an opening and the lower portion is attached to a compressible spring on its bottom surface; and a printed film having a splice area and a non-splice area, and a first surface and a second surface, wherein the splice area includes a sensor comprising two electrodes on its first surface, and wherein the splice area is inserted between the upper portion and the lower portion such that the sensor is visually aligned with the opening.

[0134] Example 28. The detachable element according to Example 27, wherein the non-contact area includes at least two contact pads on its first surface.

[0135] Example 29. The detachable element according to Example 28, wherein each of the at least two contact pads is electrically linked to either of the two electrodes.

[0136] Example 30. The detachable element according to Example 28, wherein some of the at least two contact pads are electrically linked to either of the two electrodes.

[0137] Example 31. The detachable element according to Example 27, wherein the second surface of the non-connected area is wound around the compressible spring.

[0138] Example 32. The detachable element according to Example 27, wherein the second surface of the non-connecting region is attached to the compressible spring.

[0139] Example 33. The detachable element according to Example 27, wherein the upper and lower portions are releasably secured to the printed film.

[0140] Although the invention has been described with reference to specific embodiments, those skilled in the art will understand that various changes can be made and elements of the invention can be substituted with equivalents without departing from the scope of the invention. Furthermore, many modifications can be made to specific instances or materials taught in the invention without departing from the scope of the invention. Therefore, the invention is not intended to be limited to the specific embodiments disclosed, but rather to encompass all embodiments falling within the scope and spirit of the appended claims.

Claims

1. A detachable component comprising: The body includes a hole and a retaining recess, wherein the retaining recess includes a reference surface; as well as A printed circuit board assembly (PCBA) includes a printed circuit board (PCB) having an outer edge and a contactor coupled to the PCB, wherein a portion of the contactor extends beyond the outer edge of the PCB. The portion of the contactor extending beyond the outer edge of the PCB contacts the reference surface.

2. The detachable component according to claim 1, wherein: The main body includes a top surface; The PCB includes a thickness; and The reference surface is parallel to the top surface and offset relative to the top surface by a distance from the reference surface to the top surface, and the distance is equal to the thickness of the PCB.

3. The detachable component according to claim 1, wherein the PCB is a sensor.

4. The detachable element according to claim 3, wherein the PCB is selected from the group consisting of: bioimpedance sensors, photodetectors, temperature sensors, pH sensors, sweat sensors, ultrasound sensors, bone growth stimulant sensors, and combinations thereof.

5. The removable element of claim 1, wherein the PCB is inserted into the retaining recess and held in place by a retainer comprising a plurality of tabs.

6. The removable element according to claim 5, wherein the retainer is a mechanical positioning element.

7. The removable element according to claim 5, wherein the retainer is a conductive circuit element.

8. The removable element of claim 5, wherein the retainer comprises one or more conductive elements and one or more non-conductive elements.

9. The removable element of claim 5, wherein the retainer includes a deformable retaining feature configured to cover a portion of one or more tabs of the retainer.

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