DEVICES FOR ASSISTING SELF-CATHETERIZATION AND METHODS FOR USING SUCH DEVICES
20210052852 ยท 2021-02-25
Inventors
- Craig Comiter (Palo Alto, CA, US)
- Gabe Ho (Detroit, MI, US)
- Maria Iglesias (Scottsdale, AZ, US)
- Isaac Justice (Dresden, DE)
- Amanda Urke (Medina, MN, US)
Cpc classification
A61M25/01
HUMAN NECESSITIES
A61M27/00
HUMAN NECESSITIES
A61M25/0017
HUMAN NECESSITIES
A61M2025/0213
HUMAN NECESSITIES
International classification
Abstract
Devices and methods are provided to facilitate self-catheterization of a urethra. In an exemplary embodiment, the device includes an elongate anchor member comprising a proximal end and a rounded distal end to facilitate insertion into a user's vagina, a bridge extending laterally from an intermediate location of the anchor member, a guide on the bridge spaced apart from the anchor member such that the guide is aligned with the user's urethra, the guide including a passage therethrough sized to receive a urinary catheter therethrough, and a handle on the proximal end of the anchor member to facilitate manipulation by the user and consistent, accurate alignment of the guide.
Claims
1. A device to facilitate self-catheterization of a urethra, comprising: an elongate anchor member comprising a proximal portion, a distal portion sized and/or shaped to facilitate insertion into a user's vagina, and a longitudinal axis extending between the proximal and distal portions, the distal portion having a cylindrical shape terminating in a rounded or tapered distal tip; a bridge extending laterally from an intermediate location of the anchor member; a guide on the bridge spaced apart laterally from the anchor member, the guide comprising a passage therethrough sized to receive a urinary catheter therethrough; and a handle on the proximal portion of the anchor member.
2. The device of claim 1, wherein the anchor member has a substantially uniform diameter between the proximal and distal ends.
3. The device of claim 2, wherein the handle comprises an extension of the proximal portion.
4. The device of claim 1, wherein the distal portion has a cross-section larger than a cross-section of the proximal portion.
5. The device of claim 1, wherein the guide comprises a tubular member having a length shorter than a length of the anchor member.
6. The device of claim 3, wherein the tubular member defines a guide axis that is aligned substantially parallel to the longitudinal axis.
7. The device of claim 6, wherein the tubular member is substantially straight.
8. The device of claim 5, wherein the tubular member is curved.
9. The device of claim 8, wherein the tubular member includes a distal end defining an outlet that is aligned with the longitudinal axis, and a proximal end defining an inlet that is oriented laterally relative to the longitudinal axis.
10. The device of claim 1, wherein the guide comprises a curved saddle having a length shorter than a length of the anchor member and a ring.
11. The device of claim 10, wherein the curved saddle is aligned along a guide axis that extends substantially parallel to the longitudinal axis.
12. The device of claim 10, wherein the ring comprises an enclosed ring defining an opening on a distal end of the curved saddle.
13. The device of claim 1, wherein the handle extends laterally from the proximal portion of the anchor member.
14. The device of claim 13, wherein the handle extends from the proximal portion the anchor member along a handle axis extending laterally relative to the longitudinal axis, the handle axis offset radially around the longitudinal axis relative to the bridge axis.
15. The device of claim 14, wherein the handle axis is offset substantially ninety degrees relative to the bridge axis.
16. The device of claim 13, wherein the handle comprises a T shaped handle including opposite arms extending laterally from the proximal end.
17. The device of claim 14, wherein the handle has a hilt-shape.
18. The device of claim 1, wherein the anchor member is substantially rigid.
19. The device of claim 1, wherein the bridge comprises a tubular segment attached to the anchor member and a leg extending laterally from the tubular segment, the guide attached to the leg.
20-27. (canceled)
28. A method for self-catheterization by a user, comprising: inserting a distal portion of an elongate anchor member of a guide device into the user's vagina to align a guide of the guide device with the user's urethra; inserting a urinary catheter through the guide into the urethra; advancing the catheter into the user's bladder; voiding urine from the bladder; and removing the catheter and anchor member.
29-31. (canceled)
32. A device to facilitate self-catheterization of a urethra, comprising: an elongate anchor member comprising a proximal portion including a handle, a distal portion comprising a concave contact surface and terminating in a distal tip, and a passage through the distal portion spaced apart from the distal tip to position the passage adjacent a user's urethra when the distal tip is engaged with the user's pelvic bone, the passage sized to receive a urinary catheter therethrough.
33-43. (canceled)
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The invention is best understood from the following detailed description when read in conjunction with the accompanying drawings. It is emphasized that, according to common practice, the various features and design elements of the drawings are not to-scale. On the contrary, the dimensions of the various features and design elements are arbitrarily expanded or reduced for clarity. Included in the drawings are the following figures:
[0020]
[0021]
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0029] Before the exemplary embodiments are described, it is to be understood that the invention is not limited to particular embodiments described, as such may, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting, since the scope of the present invention will be limited only by the appended claims.
[0030] Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limits of that range is also specifically disclosed. Each smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range, and each range where either, neither or both limits are included in the smaller ranges is also encompassed within the invention, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included in the invention.
[0031] Unless defined otherwise, 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 invention belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, some potential and exemplary methods and materials are now described.
[0032] It must be noted that as used herein and in the appended claims, the singular forms a, an, and the include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a compound includes a plurality of such compounds and reference to the polymer includes reference to one or more polymers and equivalents thereof known to those skilled in the art, and so forth.
[0033] Generally, the devices herein may improve efficiency of female self-catheterization by utilizing anatomical landmarks to aid accurate catheter placement within the urethra. The devices and methods herein may mitigate one or more UTI risk factors, such as bacterial contamination from missing the urethra and/or inadequate frequency of voiding. Importantly, the devices herein may be designed to be easily and reliably used by individuals at home without the need of physician or caregiver assistance.
[0034] One or more of the following advantages may be provided by the devices herein. First, the devices herein may improve efficiency of female self-catheterization because the device includes a guide member designed to mimic a tampon, a device many women are familiar with, to make insertion more intuitive and comfortable. Second, optionally, a personalized distance between the guide member and a catheter guide may increase the accuracy in locating the urethra. Finally, the devices herein may eliminate the need for visibility to identify where the catheter is inserted, but rather feature a mechanism of use that consistently and accurately aligns the guide member with the urethra without use of a mirror.
[0035] Turning to the drawings,
[0036] The components of the guide device 10 (as well as other devices described herein) may be formed from substantially rigid biocompatible material, e.g., metal, plastic, composite materials, and the like. The material may be sufficiently durable such that the device 10 may use, cleaned, and used again, e.g., multiple times by a user, although alternatively, the device 10 may be a single-use, disposable device, if desired. The components of the device 10 may be formed as an integral unit, e.g., by molding, casting, 3-D printing, or otherwise forming all of the components together. Alternatively, one or more of the components may be formed separately and substantially permanently attached or otherwise assembled together, e.g., by one or more of bonding with adhesive, interference fit, fusing, welding, using one or more fasteners, and the like. For example, the anchor member 10 may be formed separately, and the bridge 20 and handle 50 may be attached to the desired locations on the anchor member 10, as shown and described elsewhere herein.
[0037] In the embodiment shown in
[0038] As best seen in
[0039] The bridge 30 may be located at any desired distance from the distal tip 25 of the anchor member 20, e.g., to position the guide 40 adjacent the user's urethra but spaced apart sufficiently from the distal tip 25 to facilitate introduction of a urinary catheter into the urethra, as described further elsewhere herein. For example, the bridge 30 may be located and shaped so as to follow the curvature of the anatomy between the user's vagina and urethra. Alternatively, the bridge 30 may be positioned such that the guide 40 is spaced apart a desired distance from the body surface. The leg 34 may extend laterally from the anchor member 20, e.g., along a bridge axis 36 oriented substantially perpendicular to the longitudinal axis 26 of the anchor member 20 and/or otherwise oriented to position the leg 34 flush with the user's skin when the distal portion 24 of the anchor member 20 is fully inserted.
[0040] With continued reference to
[0041] As shown in
[0042] The lateral distance (e.g., distance L shown in
[0043] With continued reference to
[0044] Turning to
[0045] As shown in
[0046] Turning to
[0047] The bridge 30 and guide 40 may be formed with and/or attached to the anchor member 120 similar to other embodiments herein. Consequently, the guide axis 46 and passage 48 through the guide 40 may be aligned substantially parallel to the longitudinal axis 126 of the anchor member 120, which may allow the device 110 to be used similar to other embodiments herein. Alternatively, other bridges and/or guides may be provided on the device 110 (or any of the other guide devices herein).
[0048] For example, turning to
[0049] Consequently, when the distal portion 126 of the anchor member 120 inserted into the user's vagina, the proximal end 142 of the guide 140 may be oriented laterally, e.g., such that the user may rotate or otherwise manipulate the device 110 (e.g., holding the proximal portion 122) to orient the inlet of the guide 140 upwardly, which may facilitate insertion of a urinary catheter (not shown) downwardly into the guide 140. The curved tubular segment may guide the catheter inserted into the curved passage 148 out the outlet in the distal 144 into the user's urethra, e.g., substantially parallel to the longitudinal axis 126.
[0050] Yet another alternative embodiment of a guide 140 is shown in
[0051] It will be appreciated that other handles may be provided on the guide devices herein. For example,
[0052] Unlike previous embodiments, the handle 250 includes a hilt-shaped body extending from the proximal portion 222, e.g., including a first segment 250a extending laterally from the anchor member 220, a second segment 250b extending substantially parallel to the longitudinal axis 226, and a third segment 250c extending laterally from the second segment 250b, e.g., towards the axis 226. In this configuration, the handle 250 may facilitate manipulation of the device 210 during insertion and/or catheterization via the guide 40, with the handle offset from the guide 40 to avoid interference and/or facilitate visualization during catheterization.
[0053] Alternatively, as shown in
[0054] Unlike the previous embodiments, a T shaped handle 350 is provided on the proximal portion 350 of the anchor member 320 that includes two opposing arms 352 extending laterally from the proximal end 322, e.g., substantially perpendicular to longitudinal axis 326 of the device 310, thereby defining a handle axis 356. As shown, the handle axis 356 may lie within the same plane as the bridge and guide axes 36, 46, although alternatively, the handle axis 356 may be offset radially around the longitudinal axis 226 relative to the bridge axis 36, e.g., ninety degrees, as desired. The T shaped handle 350 may facilitate use by both right and left handed users, since the user can hold either arm 352 to manipulate the device 310.
[0055] Turning to
[0056] In the embodiment shown, the elongate body 420 is formed as a planar sheet having a width w, e.g., between about forty five and sixty five millimeters (45-65 mm), and a thickness t, e.g., between about three and ten millimeters (3.0-10 mm), formed from biocompatible materials, e.g., using similar materials and methods as other embodiments herein. The elongate body 420 may have a substantially uniform width w and/or thickness t along its entire length, e.g., as shown. Alternatively, at least the width of the elongate body 420 may vary, e.g., tapering along the distal portion or transitioning from a wider proximal portion to a narrower distal portion (not shown).
[0057] As shown, the distal portion 424 curves relative to the proximal portion 422 such that the front surface 427 has a concave shape along the distal portion 424. For example, the proximal portion 422 may have a slight curvature, e.g., defining a radius of curvature that is larger than the distal portion 424, and the distal portion 424 may define a smaller radius of curvature such that the front surface along the distal portion 424 is concave. Alternatively, the proximal portion 422 may be substantially flat (not shown), and the distal portion 424 may have a uniform or variable radius of curvature defining a concave contact surface extending from the proximal portion to the distal tip. Alternatively, an intermediate region of the elongate body between the proximal and distal portions may have a relatively small radius of curvature, and the proximal and distal portions may have relatively larger radiuses of curvature or may be substantially flat. In this manner, a desired length of the distal portion 424 from the distal tip 425 may be placed securely against the user's pubic bone area to stabilize and position the device 410, as described further below.
[0058] In an exemplary embodiment, the elongate body 420, handle 450, and passage 448 may be integrally formed from rigid plastic, e.g., by molding, casting, and the like. Alternatively, the handle 450 may be formed separately and permanently attached to the proximal end 422 and/or the passage 448 may be formed after forming the elongate body 420, e.g., by drilling, stamping, laser cutting, and the like.
[0059] As shown, the handle 450 includes two ends 452 attached to the rear surface 429 on the proximal portion 422 and a handle bar 454 extending between the two ends 452 such that the handle bar 454 is spaced away from and extends substantially parallel to the rear surface 429, which may facilitate gripping the handle 450 and/or manipulating the device 410 during use. Alternatively, other handles may be provided on the proximal portion 422, e.g., similar to the handles described elsewhere herein and/or in the applications incorporated by reference herein.
[0060] During use, the user may hold the handle 450 and position the distal tip 425 below their pubic bone with the front, i.e., concave, surface 427 oriented towards their body. The distal portion 424 adjacent the distal tip 425 may then be engaged firmly against the pubic bone area with the front surface 427 immediately adjacent their body, thereby stabilizing the device 410 and positioning the passage 448 adjacent their urethra. Similar to other embodiments herein, the user may then insert a urinary catheter (not shown) through the passage 448 into the urethra and advance the catheter into their bladder to void urine. Once completed, the catheter and then device 410 may be removed.
[0061] It will be appreciated that a variety of devices 410 may be provided, e.g., having different dimensions, e.g., different distances from the distal tip 425 to the passage 448 and/or different radiuses of curvature and/or widths along the distal portion 424. Thus, the user (e.g., in consultation with their medical professional) may select a device 410 having appropriate dimensions based on their particular anatomy to facilitate self-catheterization. Alternatively, a custom device may be formed for each user based on their individual anatomy. In a further alternative, at least the distal portion 424 of the elongate body 420 may be malleable such that the user may adjust the shape of the distal portion 424, e.g., during their first use to adjust the shape based on their anatomy and then the distal portion 424 may retain the adjusted shape for subsequent use.
[0062] Turning to
[0063] Similar to other embodiments herein, the passage 548 may be sized to slidably receive a urinary catheter (not shown) therethrough, e.g., substantially parallel or otherwise oriented relative to the guide axis 546, such that the catheter may be inserted into the user's urethra (also not shown). As shown, a handle 550 may be provided that is an extension of the proximal portion 522, e.g., including one or more ridges or other features 552 to facilitate holding and/or manipulating the device 510 during use. Alternatively, other handles may be provided on the proximal portion, e.g., similar to other embodiments described herein.
[0064] During use, while holding the handle 550, the user may insert the anchor member 540 into their vagina and position the passage 548 adjacent their urethra. For example, the proximal portion 522 and handle 550 may be sufficiently long that the user orient the handle 550 towards their waist with the anchor member 540 inserted into the vagina. This configuration may facilitate properly orienting the passage 548 for self-catheterization without the user having to bend over, e.g., using tactile feedback without requiring direct visualization. Alternatively, one or more additional anchoring elements may be provided on the distal portion, which may be engaged and/or aligned with other well-known anatomical landmarks, e.g., their clitoris, public bone, and the like, which may facilitate stabilization and/or positioning of the device 510. In this alternative, the passage 548 may be located between two anchor members, e.g., separated by predetermined distances to position the passage 548 adjacent the user's urethra. Similar to other embodiments herein, the user may then insert a urinary catheter (not shown) through the passage 548 into the urethra and advance the catheter into their bladder to void urine. Once completed, the catheter and then device 510 may be removed.
[0065] Additional information regarding variations of the devices and methods herein may be found in the applications incorporated by reference herein. It will be appreciated that any combination of the components described herein may be provided and used in combination with one another for the devices and methods herein.
[0066] While the invention is susceptible to various modifications, and alternative forms, specific examples thereof have been shown in the drawings and are herein described in detail. It should be understood, however, that the invention is not to be limited to the particular forms or methods disclosed, but to the contrary, the invention is to cover all modifications, equivalents and alternatives falling within the scope of the appended claims.