Endoscope overcover for wheels and handles

Abstract

The medical device includes a handle and a flexible member controlled by the handle, the handle including one or more knobs, each of the one or more knobs having a plurality of protrusions circumferentially spaced from one another, and the medical device includes one or more gripping enhancements configured to be removably coupled to the one or more knobs.

Description

[Technical field]

[0001] The present disclosure relates generally to medical device accessories and extensions. More specifically, embodiments of the present disclosure relate to an add-on overcover for the control knobs and handles of an endoscope or other medical device. [Background technology]

[0002] Endoscopes, especially the control knobs and handles of endoscopes, have been matched to similar designs and sizes. For example, single-use endoscopes try to mimic the human interface dimensions of reusable endoscopes as close as possible. Endoscope sizes are not optimized for the global variation in the size of endoscope operators' hands. Due to training and experience, there is a significant resistance to modifying the design of endoscopes to better fit people or to providing adjustability on the endoscope itself to fit the endoscope operator's hand. As a result, endoscope operators often use both hands to operate the control knobs or contort their hands into abnormal shapes during the procedure. This further leads to increased stress and muscle fatigue on the endoscope operator's hands during extended procedures or during multiple procedures in a day or at one time. Summary of the Invention

[0003] According to one example, a medical device may include a handle and a flexible member controlled by the handle, the handle including one or more knobs, each of the one or more knobs having a plurality of protrusions circumferentially spaced from one another, and the medical device may include one or more gripping enhancements configured to be removably coupled to the one or more knobs.

[0004] In another example, the one or more gripping enhancers may include a first gripping enhancer and a second gripping enhancer configured to be removably coupled to the same one of the one or more knobs. At least one of the gripping enhancers may be configured to at least partially cover each of a plurality of protrusions of a given one of the one or more knobs. At least one of the gripping enhancers may be configured to at least partially cover at most less than the entirety of a plurality of protrusions of a given one of the one or more knobs. The first gripping enhancer may include a plurality of protrusions, the second gripping enhancer may include a plurality of protrusions, the plurality of protrusions of the first gripping enhancer may have a first extension length from a center of the first gripping enhancer, and the plurality of protrusions of the second gripping enhancer may have a second extension length from a center of the second gripping enhancer, and the first extension length and the second extension length may be different. At least one of the gripping enhancements may include an elastic overcover movable from a rest configuration to an expanded configuration, and the elastic overcover may be biased to the rest configuration. At least one gripping enhancement may have alternating protrusions and recesses spaced circumferentially from one another, and the number of alternating protrusions may be equal to the number of protrusions on a given knob of the one or more knobs. At least one gripping enhancement may be generally ring-shaped and include a central opening, and each of the alternating protrusions may be positioned radially outward from the central opening. The gripping enhancement may include an outer surface including an adhesive material. At least one gripping enhancement may include one or more tabs configured to snap onto a respective protrusion of the plurality of protrusions. Each of the one or more tabs may include a sidewall extending along a first axis, a ridge extending radially inward from an end of the sidewall, a rim extending radially inward from an end of the ridge, and a recess extending along an interior of the ridge between the sidewall and the rim. Each tab may be configured to bend relative to the remainder of the grip enhancement around the joint.The additional gripping enhancer may be configured to be removably coupled to the handle, and the additional gripping enhancer may include a slit configured to allow the gripping enhancer to open and close around the handle and the gripping portion, and the gripping portion may include a contoured pattern to match the contour of the underlying handle. An outer surface of the additional gripping enhancer may include an adhesive material. At least one gripping enhancer may be configured to be removably coupled directly to exactly one of the multiple protrusions of the one or more knobs.

[0005] According to one example, a kit may include a plurality of gripping enhancers for a handle of an endoscope, the plurality of gripping enhancers may include a first gripping enhancer and a second gripping enhancer, the first gripping enhancer and the second gripping enhancer may be configured to be coupled to the same knob of an endoscope to provide different gripping sensations to the same knob. The different gripping sensations may include different spacing between adjacent finger-like projections, different tackiness, different thicknesses or lengths or widths of the projections of each gripping enhancer, and / or different patterned surfaces on the outer surface of each gripping enhancer. The additional gripping enhancer may be configured to be removably coupled to the handle, the additional gripping enhancer may include slits configured to allow the gripping enhancer to open and close around the handle and the gripping portion, and the gripping portion may include an undulating pattern to match the contour of the underlying handle.

[0006] According to one example, an overcover for one or more endoscope knobs may include a ring-shaped central portion including an opening extending therethrough, and at least three protrusions positioned radially outward from the ring-shaped central portion and circumferentially spaced from one another, each of the at least three protrusions defining a hollow interior, the hollow interiors of each of the at least three protrusions opening into the opening of the ring-shaped central portion. The entire overcover may be formed of a resilient material. [Brief description of the drawings]

[0007] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate various exemplary embodiments and, together with the description, serve to explain the principles of the disclosed embodiments. [Figure 1A] FIG. 1 is a perspective view of an exemplary endoscope, according to aspects of the present disclosure. [Figure 1B] Same as above. [Figure 2A] FIG. 1 is a perspective view of an endoscopic knob having an exemplary overcover. [Figure 2B] FIG. 1 is a cross-sectional view of an endoscopic knob having an exemplary overcover, according to an aspect of the present disclosure. [Figure 3A] FIG. 2 illustrates a top view of an exemplary overcover, according to aspects of the present disclosure. [Figure 3B] FIG. 2 is a side cross-sectional view of an exemplary overcover according to aspects of the present disclosure. [Figure 3C] FIG. 2 illustrates a bottom view of an exemplary overcover, according to aspects of the present disclosure. [Figure 4A] FIG. 1 is a perspective view of an endoscopic knob having an exemplary overcover. [Figure 4B] FIG. 1 is a cross-sectional view of an endoscopic knob having an exemplary overcover, according to an aspect of the present disclosure. [Diagram 5] 1 is a cross-sectional view of a portion of an endoscopic knob having an exemplary overcover, according to an aspect of the present disclosure. [Figure 6A] FIG. 2 illustrates a top view of an exemplary overcover, according to aspects of the present disclosure. [Figure 6B] FIG. 2 is a side cross-sectional view of an exemplary overcover according to aspects of the present disclosure. [Figure 6C] FIG. 2 illustrates a bottom view of an exemplary overcover, according to aspects of the present disclosure. [Figure 7A] FIG. 1 is a perspective view of an endoscopic knob having an exemplary overcover. [Figure 7B] FIG. 2 illustrates a side view of an exemplary overcover according to aspects of the present disclosure. [Figure 8A] FIG. 1 is a perspective view of an endoscope handle having an exemplary overcover, according to an aspect of the present disclosure. [Figure 8B] Same as above. [Figure 9A] FIG. 1 illustrates a perspective view of an exemplary handle overcover according to aspects of the present disclosure. [Figure 9B] Same as above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same or similar reference numbers are used throughout the drawings to refer to the same or similar parts. The term "distal" refers to the part of the device that is furthest from the user when it is introduced into the patient. Conversely, the term "proximal" refers to the part of the device that is closest to the user when it is placed within the patient. Throughout the figures contained in this application, arrows labeled "P" and "D" are used to indicate the proximal and distal directions in the figures. As used herein, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or device that includes a list of elements does not include only those elements, but may include other elements not expressly listed or inherent to such process, method, article, or device. The term "exemplary" is used in the sense of "example" rather than "ideal". Additionally, relative terms such as, for example, "about", "substantially", "approximately", etc. are used to indicate a possible variation of ±10% of a stated numerical value or range.

[0009] An external, inexpensive, customizable device can help endoscope users with both smaller and larger hand sizes use the endoscope's functions with high efficiency and reduce stress on the endoscope user. At least some examples of the present disclosure relate to an additional overcover for the control knobs and handles of an endoscope. Such a device can allow an endoscope operator to select an effective size, texture, and grip feel for the endoscope's control knob and / or handle to meet their needs and reduce stress experienced during a procedure.

[0010] 1A and 1B show perspective views of an exemplary endoscopic system 100. The endoscopic system 100 may include an endoscope 101. The endoscope 101 may include a handle assembly 106 and a flexible tubular shaft 108. The handle assembly 106 may include a biopsy port 102, a biopsy cap 103, an image capture button 104, an elevator actuator 107, a first locking lever 109, a second locking lever 110, a first control knob 112, a second control knob 114, a suction button 116, an air / water button 118, a handle body 120, and an umbilicus 105. Any of the actuators, elevators, knobs, levers, ports, or caps of the endoscopic system 100 may serve any purpose and are not limited by any particular use, which may be implied by the individual naming of each component as used herein. The umbilicus 105 may extend from the handle body 120 to auxiliary devices such as a control unit, water supply, or vacuum source. The shaft 108 may terminate at a distal tip 119. The shaft 108 may include an articulation section 122 for deflecting the distal tip 119 upward, downward, left, and / or right. The handle body 120 may be tapered, narrowing as the handle extends distally such that the profile of the handle body 120 is smaller at its distal end than its proximal end.

[0011] Although the term endoscope may be used herein, it should be understood that other devices may be used in connection with the devices of the present disclosure, including, but not limited to, duodenoscopes, colonoscopes, ureteroscopes, bronchoscopes, laparoscopes, sheaths, catheters, or any other suitable delivery device or medical device.

[0012] FIG. 2A depicts a portion of the endoscope 101, including a first locking lever 109, a second locking lever 110, a first control knob 112, and a second control knob 114. It will be appreciated that the second control knob 114 has a larger diameter than the second locking lever 110, and the first control knob 112 has a larger diameter than the second control knob 114. The second control knob 114 is coupled to a removable overcover 202. For example, the overcover 202 may be removed from the second control knob 114 and added over the first control knob 112. The overcover 202 may have a slightly smaller diameter (e.g., 20% smaller, 10% smaller, 5% smaller) than the second control knob 114 so that it may tightly encase the second control knob 114 or the first control knob 112. It will be appreciated that more than one overcover 202 may be used with the endoscope 101. For example, each of the first control knob 112 and the second control knob 114 may be coupled to the overcover 202, or both the first control knob 112 and the second control knob 114 may be coupled to the overcover 202. In some examples, the overcover 202 may be made of a soft, flexible, elastic, and / or resilient material such that the overcover 202 can stretch and / or compress as needed. For example, the overcover 202 may stretch and / or compress around a substantial portion, substantially the entirety, or the entire outer surface of the first control knob 112. For example, the overcover 202 may stretch and / or compress around a substantial portion, substantially the entirety, or the entire outer surface of the second control knob 114. For example, the overcover 202 may stretch around the second locking lever 110 to access the first control knob 112 or the second control knob 114.

[0013] In some examples, the overcover 202 may be made of a rubber-type material, such as synthetic rubber, natural rubber, or polyurethane. In some examples, the overcover 202 may have different textures (e.g., bumpy, rough, smooth) that may improve gripping ability. In some examples, the overcover 202 may include an adhesive or tacky material on the exterior and / or interior surfaces. In some examples, the adhesive or tacky material may be a releasable adhesive, a magnet, a keyed portion (i.e., a component that fits into another slot or notch), VELCRO®, surface roughening, and / or additional material that encases the interior and / or exterior surface of the overcover 202. The tacky material on the exterior and interior surfaces of the overcover 202 may improve gripping ability and / or improve adhesion of the overcover 202 to the first control knob 112 and / or the second control knob 114.

[0014] 2B is a cross-sectional view of the second lock lever 110, the first control knob 112, and the second control knob 114 of the endoscope 101. The second control knob 114 is coupled to a removable overcover 202. In one embodiment, the inner surface 230 of the overcover 202 may contact and / or be flush with at least a portion of the outer surface of the second control knob 114, forming a gap 132 and / or a gap 134 between the outer surface of the control knob 114 and the inner surface 230 of the overcover 202. For example, the inner surface 230 of the overcover 202 may contact the top surface 128, the side surface 129, and / or the bottom surface 130 of the second control knob 114. In one embodiment, the distance between the outer surface 228 and the inner surface 230 of the overcover 202 may vary. In one embodiment, the gap 132 and the gap 134 may be of variable size. In another embodiment, the inner surface 230 may be flush with the entire outer surface of the second control knob 114.

[0015] In another embodiment, the overcover 202 may stretch around the second locking lever 110 to access the second control knob 114. The overcover 202 may then stretch around the second control knob 114 such that the inner surface 230 of the overcover 202 may contact the top surface 128 and / or side surface 129 of the second control knob 114. The overcover 202 may then compress and / or return towards its rest configuration such that the inner surface 230 of the overcover 202 may contact the bottom surface 130 of the control knob 114, which holds the overcover 202 in place during the procedure.

[0016] 3A-3C show top, side cross-sectional, and bottom views of the overcover 202. The overcover 202 may be in an extended or stationary configuration as described in FIGS. 2A-2B. The overcover 202 may be substantially biased into the stationary configuration, which allows the overcover 202 to extend over the second control knob 114 or the first control knob 112, but still remain fixed. As described above, the overcover 202 may have a slightly smaller diameter (e.g., 20% smaller, 10% smaller, 5% smaller) than the second control knob 114. In some examples, the overcover 202 may include a central opening 204 on the top and bottom surfaces. In some examples, the opening 204 may be ring-shaped, although other suitable shapes are contemplated. In some examples, the structure of the overcover 202 may include alternating radial protrusions 206 and arcuate recesses 208 circumferentially spaced from one another to form a continuous circumferential surface. The overall structure of the overcover 202 may be approximately similar to the shape of a control knob of an endoscope. The inner surface 210 of the recess 208, the inner surface 212 of the protrusion 206, the inner top surface 234, and the inner bottom surface 235 form a pocket 232 inside the overcover 202. In one example, the pocket 232 may allow the overcover 202 to stretch around the second locking lever 110 without any interference. In another example, the pocket 232 may allow the overcover 202 to stretch around and / or encase the first control knob 112 and / or the second control knob 114 without any interference.

[0017] In one embodiment, the inner surfaces 210 and 212 of the overcover 202 may correspond to the outer surfaces of the first control knob 112 and / or the second control knob 114, while the outer surface of the overcover 202 may have other shapes. For example, the outer surface of the overcover 202 may have a straight / squared recess instead of an arcuate recess.

[0018] It will be appreciated that the overcover 202 may be of different sizes (e.g., small, medium, and large). In some examples, the small, medium, and large sizes may correspond to a particular thickness, width, length, and / or shape of the overcover 202 such that an endoscope operator may customize the control knobs to their liking. For example, the first overcover 202 and the second overcover 202 may have protrusions 206 of various lengths from the center of the opening 204.

[0019] FIG. 4A depicts a portion of an endoscope 101 including a first locking lever 109, a second locking lever 110, a first control knob 112, and a second control knob 114 coupled to a removable overcover 302. The overcover 302 can substantially cover the top and sides of the second control knob 114. In some examples, the diameter of the overcover 302 can be just equal to or larger than the diameter of the second control knob 114. In some examples, the overcover 302 can be made from a semi-rigid plastic such that the overcover 302 can be "snap-fit" onto the second control knob 114. The overcover 302 can be generally rigid, but also capable of bending sufficiently such that the overcover 302 can be placed onto the second control knob 114. When bent, the overcover 302 is biased into a resting configuration.

[0020] 4B is a cross-sectional view of the second lock lever 110, the first control knob 112, and the second control knob 114. The second control knob 114 is coupled to a removable overcover 302 of the endoscope 101. In one embodiment, the inner surface 330 of the overcover 302 can contact the top surface 128 and the side surface 129 of the second control knob 114. The inner surface 330 may be flush with the top surface 128 and the side surface 129 of the second control knob 114, forming a gap 322 between the outer surface of the control knob 114 and the inner surface 330 of the overcover 302. In one embodiment, the distance between the outer surface 328 and the inner surface 330 of the overcover 302 may vary. The overcover 302 may include tabs 320 that may deflect outwardly and "snap" into place once any interference of the second control knob 114 is removed. The tab 302 may contact the underside of a finger, a recess, or the entire underside of the second control knob 114 .

[0021] FIG. 5 provides a detailed view of the second control knob 114 coupled to the overcover 302 described in FIGS. 4A and 4B above. In one embodiment, the overcover 302 may be moved in a circular motion around and / or up and down the second control knob 114 until the structure of the overcover 302 aligns with the fingers and indentations of the second control knob 114. The tabs 320 may then be bent radially outward to secure the flexible joints 336 onto the second control knob 114. As the overcover 302 is pressed towards the second control knob 114, the side walls 338 and tabs 320 of the overcover 302 may contact the sides of the fingers of the second control knob 114. The side walls 338 and tabs 320 are secured along the sides of the second control knob 114 until the inner surface 330 is flush with the top surface 128 of the second control knob 114. The joint 342 allows the tab 320 to move radially inward and "snap" into place with the rim 332 of the tab 320 contacting the outer surface of the second control knob 114. The tab 320 may include an inner circumferential recess 334 that forms a cavity between the tab 320 and the second control knob 114. The tab 320 may include a circumferential ridge 340 that slopes radially inward from the side 338. The rim 332 is a circumferential rim adjacent the recess 334 on the ridge 340 and extends radially inward. Any inner surface of the rim 332 may include an adhesive material to improve adhesion to the second control knob 114. For all embodiments, any given tab 320 may have different dimensions than any other tab 320. For example, a given tab 320 may be 1.5 times, 2 times, 3 times the length of any other tab 320.

[0022] 6A-6C show top, side cross-sectional, and bottom views of the overcover 302. In some examples, the overcover 302 may include a central opening 304 on the top and bottom surfaces. In one embodiment, the opening 304 may be ring-shaped, although other suitable shapes are contemplated. In some examples, the structure of the overcover 302 may include alternating radial protrusions 306 and arcuate recesses 308 circumferentially spaced from one another to form a continuous circumferential surface. The inner surface 310 of the recesses 308 and the inner surface 312 of the radial protrusions 306 define a hollow interior 344, which allows the overcover 302 to substantially cover the top and sides of the second control knob 114. Tabs 320 may be found at the ends / bottoms of the radial protrusions 306, the ends / bottoms of the recesses 308, and / or all around the periphery of the bottom of the overcover 302. It will be appreciated that the overcover may be different sizes (e.g., small, medium, and large). In some examples, the small, medium, and large sizes may correspond to a particular thickness, width, length, and / or shape of the overcover 302 such that an endoscope operator can customize the control knobs to their liking.

[0023] FIG. 7A illustrates exemplary single finger overcovers 602 and 604. The single finger overcovers 602 and 604 can cover the fingers of the second control knob 114 and / or the first control knob 112. In some examples, the single finger overcovers 602 and 604 can be made of an elastic material such that the single finger overcovers 602 and 604 can remain attached to the fingers of the second control knob 114 and / or the first control knob 112 based on elasticity (e.g., a material that returns to a compressed configuration). In some examples, the single finger overcovers 602 and 604 can stretch over one finger of the second control knob 114 and / or the first control knob 112, with friction / adhesion being the primary resistance to removal. The exemplary single finger overcover 602 can have opposing bottom grooves 607 that lead to a concave extension region 605 that meets at a tip 606 that may be pointed. The extended area may be two, three, or four times the length of a finger on the control knob from the radial center point. The exemplary single finger overcover 604 may have opposing bottom grooves 609 that meet at a tip 608 that may be flat. It will be appreciated that the tips 606 and 608 of the single finger overcovers 602 and 604, respectively, may be of any shape and may be of different lengths. In some examples, the single finger overcovers 602 and 604 may be combination overcovers (e.g., part of a set) that fit less than all fingers (e.g., just two, just three, just four, and just five).

[0024] FIG. 7B is a side view of an exemplary single finger overcover 602. The single finger overcover 602 may include a cavity 612 defined by one or more surfaces. In one embodiment, the cavity 612 may have a generally square cross-section beginning at a base 618, although other suitable cross-sections are contemplated. The cross-section of the cavity 612 may vary depending on the body shape 616 of the single finger overcover 602. It will be appreciated that the body 616 of the single finger overcover 602 may take any shape (e.g., a cube, a pyramid, an irregular 3D shape). The base 618 of the single finger overcover 602 may include an exterior surface 610 that surrounds the cavity 612. The exterior surface 610 may be of varying thickness and may contact the second control knob 114 and / or the first control knob 112. It will be appreciated that multiple single-finger overcovers 602 of various shapes, sizes, textures, and designs can be independently attached to the fingers of the control knob to customize the control knob to the endoscope operator's preferences. The single-finger overcovers 602 can be of the same materials, grips, and adhesives as described above for the exemplary overcovers.

[0025] 8A-8B show a scope handle body 120 having a handle cover 702. The front (first side) of the handle cover 702 may include an ergonomic grip 703. The ergonomic grip 703 may include a recess 704 between bump 724 and bump 726, and a recess 706 between bump 726 and bump 728. An endoscope operator may place fingers in the recesses 704 and 706 during surgery. The positioning of the fingers may be further stabilized by bump 724, bump 726, and bump 728. In other words, the ergonomic grip 703 may be contoured to match the contour of the underlying handle cover 702. In some examples, the ergonomic grip 703 may be made of rubber. The back surface 710 of the handle cover 702 may be flat or may include a slit 712. The back surface 710 of the handle cover 702 may be made from a semi-rigid elastic material that may allow the cover to open around the handle and "snap" together such that the inner surface of the handle cover 702 is flush with the outer surface of the scope handle body 120. In another embodiment, the handle cover 702 may be two pieces that snap together at one or more different joints. For example, slits 712 are shown.

[0026] 9A and 9B depict the handle cover 702. In addition to the features described above in FIGS. 8A-8B, the handle cover 702 includes a channel 716 defined circumferentially by one or more surfaces. The channel 716 may have a generally circular cross-section. In one embodiment, the channel may be wider at the proximal end of the handle body 120 and narrower at the distal end of the handle body 120. In one embodiment, the surfaces 718 forming the body of the channel 716 may be of varying widths to increase the diameter of the handle cover 702 without changing the size of the channel 716. This may help endoscope operators with larger hands to use the endoscope with greater maneuverability. The top surface 720 of the handle cover 702 and the bottom surface 722 of the handle cover 702 may be of varying widths. It will be appreciated that the overcover 702 may be of different sizes (e.g., small, medium, and large). In some examples, the small, medium, and large sizes may correspond to a particular thickness, width, length, and / or shape of the handle cover 702 such that an endoscope operator may customize the handle body of the endoscope to their preferences. For example, an endoscope operator with larger hands may select the large size handle cover 702 to increase the diameter of the handle body 120 of the endoscope 101.

[0027] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. 1. A medical device comprising: a handle and a flexible member controlled by said handle, said handle including one or more knobs, each of said one or more knobs having a plurality of protrusions circumferentially spaced from one another; said medical device comprising: A medical device comprising one or more grip enhancements configured to be removably coupled to the one or more knobs.

2. 10. The medical device of claim 1, wherein the one or more grip enhancements include a first grip enhancement and a second grip enhancement configured to be removably coupled to the same one of the one or more knobs.

3. The medical device of claim 1 , wherein at least one of the grip enhancements is configured to at least partially cover each of the plurality of protrusions of a given knob of the one or more knobs.

4. 10. The medical device of claim 1, wherein at least one of the grip enhancements is configured to at least partially cover at most less than all of the plurality of protrusions of a given knob of the one or more knobs.

5. 3. The medical device of claim 2, wherein the first grip enhancement portion includes a plurality of protrusions, the second grip enhancement portion includes a plurality of protrusions, the plurality of protrusions of the first grip enhancement portion having a first extension length from a center of the first grip enhancement portion, and the plurality of protrusions of the second grip enhancement portion having a second extension length from a center of the second grip enhancement portion, the first extension length and the second extension length being different.

6. The medical device of claim 1 , wherein at least one of the grip enhancements includes a resilient overcover movable from a rest configuration to an expanded configuration, the resilient overcover being biased to the rest configuration.

7. 7. The medical device of claim 6, wherein the at least one grip enhancement has alternating protrusions and recesses circumferentially spaced from one another, the number of alternating protrusions equal to the number of protrusions on a given knob of the one or more knobs.

8. 8. The medical device of claim 7, wherein the at least one grip enhancement is generally ring-shaped and includes a central opening, and wherein each of the alternating protrusions is positioned radially outward from the central opening.

9. The medical device of claim 1 , wherein the grip enhancement comprises an outer surface comprising an adhesive material.

10. The medical device of claim 1 , wherein at least one grip enhancement comprises one or more tabs configured to snap onto a respective one of the plurality of protrusions.

11. Each of the one or more tabs: a sidewall extending along a first axis; a ridge extending radially inward from an end of said sidewall; a rim extending radially inward from an end of the ridge; a recess extending along the interior of the ridge between the sidewall and the rim; The medical device of claim 10, comprising:

12. The medical device of claim 10 , wherein each tab is configured to flex relative to the remainder of the grip enhancement around a joint.

13. and an additional grip enhancement configured to be removably coupled to the handle, the additional grip enhancement comprising: a slit configured to allow the grip enhancement to open and close around the handle; a grip portion, The medical device of any one of claims 1 to 12, wherein the gripping portion includes an undulating pattern that matches the contours of the underlying handle.

14. The medical device of claim 13 , wherein the outer surface of the additional grip enhancement comprises an adhesive material.

15. The medical device of claim 1 , wherein at least one grip enhancement is configured to be removably coupled directly to exactly one of the plurality of protrusions of the one or more knobs.

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