Patent Application
20200337686
This disclosure relates to surgical instruments, and more particularly, to specimen retrieval devices that support tissue collection bags.
Specimen retrieval devices are commonly used during surgical procedures to collect and remove tissue specimens from a patient. Typically, during a surgical procedure in which tissue is transected, e.g., a hysterectomy procedure, a specimen retrieval device including a tissue collection bag is positioned to receive the tissue specimen once the tissue is transected. In some procedures, a grasper may be used to transfer the transected tissue specimen into the bag. Alternately, the bag may be positioned in relation to the tissue specimen to allow the tissue specimen to fall into the bag.
In aspects of the disclosure, a specimen retrieval device includes an elongated shaft assembly having a proximal end portion and a distal end portion. An end effector is supported on the distal end portion of the elongated shaft assembly and includes a first arm and a second arm. The first arm includes a first distal finger and the second arm includes a second distal finger. The first and second fingers are configured to selectively engage one another to support a collection bag on the first and second arms.
In embodiments, the first and second distal fingers may be secured together with a suture. The first distal finger may define an opening therethrough and the second distal finger may define an opening therethrough. The openings of the first and second distal fingers may be configured to receive the suture therethrough.
In some embodiments, the first distal finger may include a first detent that is selectively engagable with the second distal finger. The second distal finger may include a second detent that is selectively engageable with the first distal finger. One or both of the first and second detents may have a U-shaped configuration.
In embodiments, the first detent may include one or more wings.
In various embodiments, the specimen retrieval device may further include a stationary handle and a movable handle supported on the proximal end portion of the elongated shaft assembly. The movable handle may be movable relative to the stationary handle to move the end effector between a closed position and an open position.
In some embodiments, the specimen retrieval device may further include the collection bag. The first and second arms may be configured to retain the collection bag on the end effector when the end effector is in the closed position. The first and second arms may be configured to release the collection bag from the end effector when the end effector is in the open position.
According to another aspect of the disclosure, a specimen retrieval system includes a collection bag, a first arm, and a second arm. The first arm has a first distal finger supported on a distal end portion of the first arm. The second arm has a second distal finger supported on a distal end portion of the second arm. The first and second arms are selectively movable relative to one another to releasably secure the collection bag on the first and second arms. The first and second distal fingers are disposed in slidable engagement to retain the collection bag on the first and second arms.
In embodiments, each of first and second detents may include a pair of wings.
According to yet another aspect of the disclosure, a specimen retrieval device includes an outer shaft, an inner shaft, a first arm, and a second arm. The outer shaft has a stationary handle on a proximal end portion thereof. The inner shaft is supported within the outer shaft and has a movable handle on a proximal end portion thereof. The movable handle is positioned to move relative to the stationary handle. The first arm has a proximal end portion secured to the inner shaft and distal end portion having a first distal finger. The second arm has a proximal end portion secured to the inner shaft and distal end portion having a second distal finger. The first and second distal fingers are configured to move in opposite directions as the movable handle moves relative to the stationary handle.
In embodiments, the first and second distal fingers may be secured together with a suture to prevent the first and second distal fingers from moving relative to one another.
In various embodiments, the first distal finger may support a first winged detent and the second distal finger may support a second winged detent. In response axial translation of the movable handle relative to the stationary handle, the first winged detent may be configured to radially cam along the second distal finger and the second winged detent may be configured radially cam along the first distal finger.
Other aspects, features, and advantages will be apparent from the description, the drawings, and the claims that follow.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiment(s) given below, serve to explain the principles of the disclosure, wherein:
and
Embodiments of the disclosed specimen retrieval devices are described in detail with reference to the drawings, in which like reference numerals designate identical or corresponding elements in each of the several views. As commonly known, the term “clinician” refers to a doctor (e.g., a surgeon), a nurse, or any other care provider and may include support personnel. Additionally, the term “proximal” refers to the portion of structure that is closer to the clinician and the term “distal” refers to the portion of structure that is farther from the clinician. In the following description, well-known functions or constructions are not described in detail to avoid obscuring this disclosure in unnecessary detail.
In general, this disclosure describes a specimen retrieval device with bag release mechanisms to facilitate quick and easy removal of collection bags supported on the specimen retrieval device. In embodiments of this disclosure, a specimen retrieval device includes overlapping arms that are secured together by a suture to create a single rigid ring for supporting a collection bag and for providing leverage when loading a specimen in the collection bag. The suture may be cut to enable the arms to separate so that the collection bag can be removed from the specimen retrieval device, for instance, once a specimen is contained within the collection bag. In some embodiments of this disclosure, a specimen retrieval device includes arms having U-shaped detents that overlap to secure a collection bag to the arms. The U-shaped detents provide increased rigidity to the arms when the arms are overlapped for supporting the collection bag on the arms. The arms may be slidably releasable to enable bag release.
With reference to
End effector 60 of specimen retrieval device 10 supports a collection bag 70 and includes a first arm 62 and a second arm 64 that define a ring when coupled together. First arm 62, which may have a hook or question mark shape, includes a proximal end portion 62a that curves distally to a distal end portion 62b. Distal end portion 62b of first arm 62 includes a first distal finger 62c and defines a first finger recess 62d along a side surface 62e of first distal finger 62c. First distal finger 62c defines an opening 62f configured to receive suture 66 therethrough. Second arm 64, which may also have a hook or question mark shape, includes a proximal end portion 64a that curves distally to a distal end portion 64b. Distal end portion 64b of second arm 64 includes a second distal finger 64c and defines a second finger recess 64d along a side surface 64e of second distal finger 64c. Second distal finger 64c defines an opening 64f configured to receive suture 66 therethrough. First and second arms 62, 64 curve in opposite directions so as to be mirrored relative to one another about longitudinal axis “L.” First and second distal fingers 62c, 64c are configured to be disposed in an overlapped arrangement (e.g., so that fingers 62c 64c, and/or openings 62f, 64f thereof are in vertical registration with one another) as seen in
As seen in
As illustrated in
In use, when first and second arms 112, 114 are moved in radially opposite directions, as indicated by arrows “B” and “C,” first and second winged detents 116, 118 (e.g., camming/contacting surfaces thereof) slid or cam over first and second distal fingers 112a, 114a, respectively, to separate first and second arms 112, 114 for selectively releasing a collection bag, such as collection 70 (
In some embodiments, first and/or second winged detents 116, 118 may include fewer or more wings. In one embodiment, first and/or second winged detents 116, 118 include only a single wing. In certain embodiments, the single wing of one of the winged detents 116, 118 is disposed on an inner surface of end effector 100 and the single wing of the other winged detent is disposed on an outer surface of end effector 100. In embodiments, the single wings are disposed on just the inner surface of end effector 100, or, in certain embodiments, just the outer surface of end effector 100.
In some embodiments, the arms of the disclosed end effectors may be formed of any suitable material, which may be shape memory material such as nitinol.
Securement of any of the components of the disclosed devices may be effectuated using known securement techniques such welding, crimping, gluing, heat-shrinking, fastening, etc.
The various embodiments disclosed herein may also be configured to work with robotic surgical systems and what is commonly referred to as “Telesurgery.” Such systems employ various robotic elements to assist the clinician and allow remote operation (or partial remote operation) of surgical instrumentation. Various robotic arms, gears, cams, pulleys, electric and mechanical motors, etc. may be employed for this purpose and may be designed with a robotic surgical system to assist the clinician during the course of an operation or treatment. Such robotic systems may include remotely steerable systems, automatically flexible surgical systems, remotely flexible surgical systems, remotely articulating surgical systems, wireless surgical systems, modular or selectively configurable remotely operated surgical systems, etc.
The robotic surgical systems may be employed with one or more consoles that are next to the operating theater or located in a remote location. In this instance, one team of clinicians may prep the patient for surgery and configure the robotic surgical system with one or more of the instruments disclosed herein while another clinician (or group of clinicians) remotely controls the instruments via the robotic surgical system. As can be appreciated, a highly skilled clinician may perform multiple operations in multiple locations without leaving his/her remote console which can be both economically advantageous and a benefit to the patient or a series of patients. For a detailed description of exemplary medical work stations and/or components thereof, reference may be made to U.S. Pat. No. 8,828,023, and PCT Application Publication No. WO2016/025132, the entire contents of each of which are incorporated by reference herein.
Persons skilled in the art will understand that the structures and methods specifically described herein and shown in the accompanying figures are non-limiting exemplary embodiments, and that the description, disclosure, and figures should be construed merely as exemplary of particular embodiments. It is to be understood, therefore, that this disclosure is not limited to the precise embodiments described, and that various other changes and modifications may be effected by one skilled in the art without departing from the scope or spirit of this disclosure. Additionally, the elements and features shown or described in connection with certain embodiments may be combined with the elements and features of certain other embodiments without departing from the scope of this disclosure, and that such modifications and variations are also included within the scope of this disclosure. Accordingly, the subject matter of this disclosure is not limited by what has been particularly shown and described.
