This document relates generally to medical devices. More particularly, this document relates to implantable medical devices, surgical tools for use with the devices, and surgical methods of implanting the devices in a patient, for treatment of urinary incontinence.
Suburethral sling devices to treat urinary incontinence have been proposed in recent years, but such known devices may have several disadvantages. For example, tools and methods for implanting suburethral sling devices often lead to difficulties in securing them into position with optimal degrees of tension. Indeed, the implantation of suburethral sling devices for the treatment of incontinence may be complex and time consuming, and may produce suboptimal clinical outcomes.
This document describes medical devices, surgical tools, and surgical methods that may address and alleviate the aforementioned deficiencies in the medical art.
This document also describes medical devices, surgical tools, and surgical methods that may be effective and substantially easier to use than known devices, tools, and methods for treating incontinence.
Accordingly, this document describes novel implantable medical devices that provide urethral support, novel surgical tools that are utilized with the devices, and novel surgical methods to implant the devices in patients.
In one aspect, an implantable device comprises a body member, a plurality of elongated extension members—each extending from the body member and having an end portion—and a plurality of sutures, each being connected to, respectively, the end portion of each of the plurality of elongated extension members. In another aspect, the implantable device further comprises a plurality of sleeves, each removably covering at least a portion of the plurality of elongated extension members, respectively. In another aspect, the implantable device further comprises a plurality of tips, each removably covering at least a portion of the plurality of sleeves and at least an end portion of the plurality of elongated extension members, respectively.
In another aspect, an implantable device comprises a body member having a top portion, a bottom portion, and a longitudinal axis extending through the top and bottom portions. The device also comprises at least first and second elongated extension members on opposite sides of the body member—each having an end portion, extending from the top portion of the body member, and having a longitudinal axis extending therethrough. The device also comprises at least third and fourth elongated extension members—each having an end portion, extending from the bottom portion of the body member, and having a longitudinal axis extending therethrough. The device also comprises at least one suture, connected to at least one of the elongated extension members, respectively, at the end portion thereof. The device also comprises at least one sleeve, covering a portion of at least one of the elongated extension members with the suture extending outwardly therefrom, respectively. The device also comprises at least one tip, covering and connected to the at least one sleeve and the elongated extension members, respectively, at the end portion thereof, with the suture extending outwardly therefrom, respectively. In another aspect, the body member has a generally trapezoidal shape. In another aspect, the longitudinal axis of the at least first elongated extension member is approximately colinear with the longitudinal axis of the at least second elongated extension member. In another aspect, the longitudinal axis of the at least third elongated extension member is approximately parallel to the longitudinal axis of the at least fourth elongated extension member. In another aspect, at least one sleeve is color-coded. In another aspect, at least one suture forms a loop.
In another aspect, a surgical tool comprises a shaft having a proximal end, an intermediate hook-shaped portion, a distal end opposite the proximal end, and at least one T-shaped slotted portion in the distal end of the shaft. In another aspect, the surgical tool further comprises at least one L-shaped slotted portion in the distal end of the shaft.
In another aspect, a surgical method, for use with an implantable device having a body member including a top portion and a bottom portion, and at least first, second, third, and fourth elongated extension members, each having an end portion, comprises placing the at least first, second, third, and fourth elongated extension members in a patient so that the body member is proximate to the patient's urethra. The at least first and second elongated extension members are secured through opposite ones, respectively, of the patient's obturator foramen, so that the at least first and second elongated extension members provide desired elevation of the body member connected thereto, thereby elevating the patient's urethra. The at least third and fourth elongated extension members are secured through incisions above a pubic symphysis on a right side and a left side of the patient, respectively, so that the at least third and fourth elongated extension members provide desired tension on the body member of the implantable device connected thereto, thereby compressing the patient's urethra. In another aspect, the implantable device of the surgical method further comprises at least first, second, third, and fourth sutures, connected to the end portion of the at least first, second, third, and fourth elongated extension members, respectively. In another aspect, the implantable device of the surgical method further comprises at least first, second, third, and fourth sleeves, removably covering at least the end portion of the at least first, second, third, and fourth elongated extension members, with the sutures extending outwardly therefrom, respectively. In another aspect, the implantable device of the surgical method further comprises at least first, second, third, and fourth tips, connected to the sleeves over the end portion of the elongated extension members, with the sutures extending outwardly therefrom, respectively. In another aspect of the surgical method the steps of placing the elongated extension members comprise use of a surgical tool having at least one T-shaped slotted portion therein. In another aspect of the surgical method, the at least first and second elongated extension members are tensioned to elevate the body member of the implantable device, thereby elevating the patient's urethra. In another aspect of the surgical method, the at least third and fourth elongated extension members are tensioned to tension the body member of the implantable device, thereby compressing the patient's urethra.
In another aspect, a surgical method, for use with an implantable device having a body member and at least first, second, third, and fourth elongated extension members, comprises placing the body member at a location in a patient that is proximate to, and approximately centered on, the patient's urethra. The at least first and second elongated extension members are secured through opposite ones, respectively, of the patient's obturator foramen, so that the at least first and second elongated extension members inhibit lateral shifting of the body member away from the location in the patient that is proximate to and approximately centered on the patient's urethra and also provide desired elevation of the body member connected thereto, thereby elevating the patient's urethra. The at least third and fourth elongated extension members are secured through incisions above a pubic symphysis on a right side and a left side of the patient, respectively, so that the at least third and fourth elongated extension members provide desired tension on the body member connected thereto, thereby compressing the patient's urethra.
One embodiment of an implantable device 10 (or, “device 10”) is illustrated in
In
As shown in
Sterilizable materials that are suitable for use in constructing body member 12 and arms 14′-16″ of device 10 could include synthetic materials such as meshes and the like, natural tissues such as tissues harvested from an animal, a cadaverous source, or the patient himself or herself, or any suitable combinations of synthetic and natural materials. For example, body member 12 and arms 14′-16″ could be fabricated from a knitted, monofilament polypropylene mesh material having desired wales per inch, courses per inch, thickness, density, pore sizes, strength, flexibility, and stiffness. Such a material could be, for example, an “ARIS” brand mesh material that is commercially available from Coloplast A/S.
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In this embodiment of a method for treatment of UI, implantable device 10 and surgical tool 200 are provided to a physician. A vertical perineal incision is made in a midline of a patient, dissecting to isolate the patient's ventral urethra and pubic rami bilaterally, and leaving a bulbospongiosus muscle of the patient intact but exposing the bulbospongiosus muscle and taking it partially off the patient's perineal body. Suture loop 18L associated with one of at least first and second elongated extension members (e.g., arm 14′) is removably attached to tool 200 via L-shaped slot 212 or T-shaped slot 214. For an obese patient, L-shaped slot 212 could later provide easier detachment of loop 18L, as described below, than T-shaped slot 214. By gripping handle 210 of tool 200 and pushing tool 200 forward, tip 208T is then passed by the physician through the perineal incision from medial to lateral and through an upper aspect of an obturator foramen on the patient's right side as an inside-out movement. Tip 208T is then further passed and advanced so that it exits through and protrudes outwardly from a skin exit location on the patient's right side in a vicinity of that obturator foramen. Optionally, the physician could determine a location of tip 208T, by, e.g., externally palpating its presence under the patient's skin; and then the physician could make a corresponding skin incision to facilitate emergence of tip 208T at the skin exit location. Suture loop 18L is then detached from slot 212 or 214, thereby detaching end E of arm 14′ from tool 200; and tool 200 is removed from the patient. A portion of end E of arm 14′ is then pulled outwardly from the skin exit location on the patient's right side, to later facilitate tensioning of device 10 as will be described. This process is repeated on the patient's contralateral side (in this example, the patient's left side). Accordingly, suture loop 18L associated with another of the at least first and second elongated extension members (e.g., arm 14″) is removably attached to tool 200 via L-shaped slot 212 or T-shaped slot 214, again with L-shaped slot 212 providing easier detachment of loop 18L for an obese patient. By gripping handle 210 and pushing tool 200 forward, tip 208T is then again passed by the physician through the perineal incision from medial to lateral and through an upper aspect of an obturator foramen—this time, for example, on the patient's left side—as an inside-out movement. Tip 208T is then further passed and advanced so that it exits through and protrudes outwardly from a skin exit location on the patient's left side in a vicinity of that obturator foramen. Optionally, as aforementioned, the physician could determine a location of tip 208T by, e.g., palpation; and then the physician could make a corresponding skin incision to facilitate emergence of tip 208T from the skin. Loop 18L is then detached from slot 212 or 214, thereby detaching end E of arm 14″ from tool 200; and tool 200 is again removed from the patient. As with arm 14′, a portion of end E of arm 14″ is then pulled outwardly from the skin exit location on the patient's left side to facilitate later tensioning. An incision above the patient's pubic symphysis, and lateral to the midline, on both the right and left sides of the patient is then made. By gripping handle 210 of tool 200 and pushing tool 200 forward, tip 208T is then passed prepubically, through the incision above the pubic symphysis on, e.g., the right side of the patient, and further out through the perineal incision lateral to the patient's urethra. Suture loop 18L of, e.g., arm 16′ in device 10 is then attached to T-shaped slot 214 of tool 200. Tool 200 is then pulled backwardly, with tip 208T of tool 200 thus passing backwardly through a path from the perineal incision to the incision above the pubic symphysis on the right side of the patient and outwardly therefrom, so that tip 208T of tool 200 exits through that incision above the pubic symphysis. Loop 18L is then detached from slot 214, thereby detaching end E of arm 16′ from tool 200. Tool 200 is then removed from the patient. A portion of end E of arm 16′ is then pulled outwardly from the incision above the pubic symphysis on the patient's right side, to later facilitate tensioning of device 10 as will be described. This process is repeated on the patient's contralateral side (in this example, again, the patient's left side). By again gripping handle 210 of tool 200 and pushing tool 200 forward, tip 208T is passed by the physician prepubically, through the incision above the pubic symphysis on, e.g., the left side of the patient, and further out through the perineal incision lateral to the patient's urethra. Suture loop 18L of, e.g., arm 16″ in device 10 is then attached to T-shaped slot 214 of tool 200. Tool 200 is then pulled backwardly, with tip 208T of tool 200 thus passing backwardly through a path from the perineal incision to the incision above the pubic symphysis on the left side of the patient and outwardly therefrom, so that tip 208T of tool 200 exits through that incision above the pubic symphysis. Loop 18L is then detached from slot 214, thereby detaching end E of arm 16″ from tool 200; and tool 200 is again removed from the patient. As with arm 16′, a portion of end E of arm 16″ is then pulled outwardly from the incision above the pubic symphysis on the patient's left side, to facilitate tensioning. Tensioning of first and second elongated extension members (e.g., arms 14′ and 14″) is then optionally performed for a particular patient by simultaneously pulling on their ends E outside the patient's body to elevate body member 12 of device 10 connected thereto. Thereby, the patient's urethra is elevated as may be desired for that patient. Similarly, tensioning of third and fourth elongated extension members (e.g., arms 16′ and 16″) is then optionally performed by simultaneously pulling on their ends E outside the patient's body to elevate body member 12 of device 10 connected thereto. Thereby, the patient's urethra is compressed as may be desired. Body member 12 is optionally inspected to verify its placement at the patient's urethra, and a cystoscopy is optionally performed to ensure that proper coaptation of the patient's urethra has been achieved. According to results of the cystoscopy, further tensioning of the first, second, third, and fourth elongated extension members is optionally performed by again pulling on their ends E outside of the patient. The first, second, third, and fourth sleeves, tips, and sutures—corresponding to the first, second, third, and fourth elongated extension members—are then removed and discarded by any suitable technique such as by cutting ends E at a point between body member 12 and a portion of tips 22 that is most proximal to body member 12, thereby leaving inside and outside the patient only body member 12 of device 10 and the elongated extension members extending therefrom. Remaining ends E of elongated extension members 14′-16″ are then, for example, individually trimmed at and fixated in respective locations of subcutaneous layers in the patient. The fixation of ends E in the patient could be accomplished by any suitable means such as via suturing. Finally, the perineal incision, and the incisions above the pubic symphysis on the patient's right and left sides, are closed using any suitable surgical technique such as, for example, by use of sutures or “Dermabond” closure material. It is to be appreciated that following surgery, the mesh material of device 10 typically engages surrounding tissue in the patient with fibroblast infiltration possibly providing additional fixation of arms 14′-16″ and body member 12 in the patient.
It is to be particularly appreciated and understood that fundamentally, treatment of UI described herein utilizes a suitable implantable device to provide both desired elevation and compression of a patient's urethra. This desired effect on the urethra may be basically achieved, regardless of a particular device, tool, or method, by providing an implantable device having a body member defining a top portion and a bottom portion, at least first and second elongated extension members, and at least third and fourth elongated extension members. The first and second elongated extension members are placed in the patient and secured by way of passage through, respectively, the patient's opposing obturator foramen to provide substantial fixation of the body member of the device in spatial relationship to the patient's urethra. Separately and distinctly, the third and fourth elongated extension members are placed in the patient prepubically, above the pubic symphysis, to provide desired compression of the urethra.
It is also to be particularly appreciated and understood that one embodiment of treatment of UI described herein advantageously makes use of a novel method whereby the physician actually begins the implantation surgery by placing the device at a location in the patient where it is desired to finally reside in the patient. Specifically, the method places the body member at a location that is proximate to, and approximately centered on, the patient's urethra. The elongated extension members that are secured through opposite obturator foramen act to inhibit lateral shifting of the body member away from the location that is proximate to and centered on the patient's urethra, while also providing desired elevation of the body member connected thereto, thereby elevating the patient's urethra. The elongated extension members that are secured through incisions above a pubic symphysis on a right side and a left side of the patient, respectively, provide desired tension on the body member connected thereto, thereby compressing the patient's urethra.
It is also to be understood that the devices, tools, and methods described herein may satisfy a need in the art for treatment of UI in which the devices may be easier to surgically secure into position (or, as used here throughout, “fixate”) and that may further provide an optimal degree of urethral support to thus effectively treat UI, as compared to known devices, tools, and methods. The devices, tools, and methods described herein may additionally satisfy a need in the art for treatment of UI in which the devices may be simply constructed utilizing known implant materials—whether they are synthetic materials, natural tissues, or combinations thereof, and in which the devices and tools may be easily manipulated in surgery. The devices, tools, and methods described herein may satisfy yet a further need in the art for treatment of UI in which the devices define a suburethral portion operatively positioned to support a patient's urethra, with the devices remaining in position via use of (i) at least a pair of elongated extension members (or “arms”) that are secured through patients′ obturator foramen and (ii) at least another pair of elongated extension members (or “arms”) that are secured subcutaneously above patients' pubic symphyses. The devices, tools, and methods described herein may also satisfy a need for treatment of urinary incontinence that provides opportunities to efficiently adjust tensioning of the implanted devices.
Although the invention has been described in terms of particular embodiments and applications, one of ordinary skill in the art, in light of the teaching, can generate embodiments and modifications without departing from the spirit of, or exceeding the scope of, the claimed invention. For example, it will be clear to one of ordinary skill in the art how to apply the inventive concepts disclosed herein to the treatment of both male and female incontinence. Accordingly, it is to be understood that the drawings and descriptions herein are proffered by way of example to facilitate comprehension of the invention and should not be construed to limit the scope thereof. For instance, any number of elongated extension members, beyond the two pairs of arms illustrated and described herein, may be provided to attain the novel aspects of the present invention. Specifically, and as aforementioned, the present invention provides a novel combination of placement of extension members through obturator foramen (for securing the implantable device relative to the urethra) and above the pubic symphysis, prepubically, for compression of the urethra. Thus, for example, a total of eight arms could be provided in a particular embodiment of the present invention—e.g., two pairs of arms (4 arms) for placement through the obturator foramen and two pairs of arms (4 arms) for placement prepubically, above the pubic symphysis. Likewise, the body member of the implantable device could be of any desired shape or configuration to achieve these objectives and thereby effectively treat the patient's incontinence.
Furthermore, additional surgical steps could be performed (e.g., initially placing the patient in a slightly exaggerated lithotomy position and inserting a 16 Fr foley catheter, etc.) depending upon preferences of a particular physician and standard surgical protocols of a particular institution.
While the present invention has been particularly shown and described with reference to the accompanying specification and drawings, it will be understood however that other modifications thereto are of course possible; and all of which are intended to be within the true spirit and scope of the present invention. For example, surgical tools in forms of trocars and cannulas could be equally utilized, instead of the substantially solid, needle-like surgical tool shown and described herein. It should be appreciated that (i) components, dimensions, and other particulars of aforedescribed example embodiments may be substituted for others that are suitable for achieving desired results, (ii) various additions or deletions may be made thereto, (iii) features-of the foregoing examples may also be made in various combinations thereof, and (iv) certain method steps may be performed in various sequences. It is also to be understood in general that any suitable alternatives may be employed to provide devices, tools, and methods for treatment of urinary incontinence.
Lastly, choices of compositions, sizes, and strengths of various aforementioned elements, components, and steps all depend upon intended uses thereof. Accordingly, these and other various changes or modifications in form and detail may also be made, again without departing from the true spirit and scope of the invention as defined by the appended claims.
This application claims the benefit of U.S. Provisional Application Ser. No. 61/147,478 filed Jan. 27, 2009.
Number | Date | Country | |
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61147478 | Jan 2009 | US |