Tissue retrieval bag

A tissue retrieval bag includes a brim selectively transitionable between a first configuration in which a bag mouth is biased open and a second configuration in which the brim is compressed. A bag body extends from the brim and defines a pouch for holding a tissue specimen. The bag body includes at least one spine operably associated with the brim. The spine reversibly furls and unfurls the bag body. A first release tab is operably coupled to the brim to contain the brim in the second configuration. The first release tab, upon release thereof, transitions the brim from the second configuration to the first configuration. At least one second release tab is operably coupled to the brim to maintain the bag body furled about the brim. Upon release of the at least one second release tab, the at least one spine unfurls the bag body from the brim.

BACKGROUND

Technical Field

The present disclosure relates to tissue retrieval devices and, more particularly, to a compressible tissue retrieval bag to facilitate retrieval of a tissue specimen from an internal body cavity.

Background of Related Art

In minimally-invasive surgical procedures, operations are carried out within an internal body cavity through small entrance openings in the body. The entrance openings may be natural passageways of the body or may be surgically created, for example, by making a small incision into which a cannula is inserted.

Minimally-invasive surgical procedures may be used for partial or total retrieval of a tissue specimen from an internal body cavity. However, the restricted access provided by minimally-invasive openings (natural passageways and/or surgically created openings) presents challenges with respect to maneuverability and visualization. The restricted access also presents challenges when the tissue specimen is required to be removed. As such, a tissue specimen that is deemed too large for intact retrieval may be broken down into a plurality of smaller pieces to facilitate retrieval from the internal body cavity.

During such minimally-invasive surgical procedures, it is common that a cyst, tumor, or other affected tissue specimen is required to be removed. In these and other procedures where cancerous tissue is required to be removed, retrieval of the tissue specimen in an enclosed environment is desirable to inhibit seeding of cancer cells. Thus, with respect to breaking down large tissue specimens for retrieval through minimally-invasive openings, there is the added challenge of doing so within an enclosed environment.

A tissue retrieval bag is an option for removing and breaking town a tissue specimen.

SUMMARY

In accordance with an aspect of the present disclosure, a tissue retrieval bag includes a brim defining a bag mouth. The brim is selectively transitionable between a first configuration in which the bag mouth is biased open and a second configuration in which the brim is compressed. A bag body extends from the brim and defines a pouch for holding a tissue specimen. The bag body includes at least one spine operably associated with the brim and depending therefrom. The spine reversibly furls and unfurls the bag body about the brim. A first release tab is operably coupled to the brim to contain the brim in the second configuration. The first release tab, upon release thereof, transitions the brim from the second configuration to the first configuration. At least one second release tab is operably coupled to the brim to maintain the bag body furled about the brim. Upon release of the at least one second release tab, the at least one spine unfurls the bag body from the brim.

In some aspects, the brim includes a shape memory alloy made from at least one of nickel or titanium.

In some aspects, the at least one spine includes a shape memory alloy made from at least one of nickel or titanium.

In some aspects, the brim in the first configuration includes a substantially elliptical shape. The brim has a diameter of less than about 15 mm.

In some aspects, the first release tab includes a perforated edge defined between a first side and a second side of the brim. The first release tab includes a release tether configured to separate the first release tab along the perforated edge upon actuation thereof. The release tether includes an external pull configured for positioning outside of a patient's body cavity.

In some aspects, the at least one second release tab includes a first release flap coupled to a first side of the brim and a second release flap coupled to a second side of the brim. The first and second release flaps each include a perforated edge defined therein. The first and second release flaps are connected to each other by a tether. The tether substantially simultaneously separates the first and second release flaps along the perforated edges of the first and second release flaps upon actuation thereof. The tether includes an external pull configured for positioning outside of a patient's body cavity.

In accordance with an aspect of the present disclosure, a tissue retrieval bag includes a brim defining a bag mouth. The brim is selectively transitionable between a first configuration in which the bag mouth is biased open and a second configuration in which the brim is compressed. The second configuration is sufficiently narrow to allow passage of the tissue retrieval bag through a shaft of a surgical instrument. A bag body extends from the brim. The bag body includes at least one spine operably associated with the brim and depending therefrom. The spine reversibly furls and unfurls the bag body about the brim. The bag body is sufficiently narrow when furled to allow passage of the tissue retrieval bag through a shaft of a surgical instrument. A first release tab is operably coupled to the brim to contain the brim in the second configuration. The first release tab, upon release thereof, transitions the brim from the second configuration to the first configuration. At least one second release tab is operably coupled to the brim to maintain the bag body furled about the brim. Upon release of the at least one second release tab, the at least one spine unfurls the bag body from the brim.

DETAILED DESCRIPTION

As used herein, the term “distal” refers to the portion that is being described which is further from a user, while the term “proximal” refers to the portion that is being described which is closer to a user. Further, to the extent consistent, any of the aspects and features detailed herein may be used in conjunction with any or all of the other aspects and features detailed herein.

As used herein, the terms parallel and perpendicular are understood to include relative configurations that are substantially parallel and substantially perpendicular up to about + or −10 degrees from true parallel and true perpendicular.

“About” or “approximately” as used herein may be inclusive of the stated value and means within an acceptable range of variation for the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the error associated with measurement of the particular quantity (e.g., the limitations of the measurement system). For example, “about” may mean within one or more standard variations, or within ±30%, 20%, 10%, 5% of the stated value.

Descriptions of technical features or aspects of an exemplary embodiment of the present disclosure should typically be considered as available and applicable to other similar features or aspects in another exemplary embodiment of the present disclosure. Accordingly, technical features described herein according to one exemplary embodiment of the present disclosure may be applicable to other exemplary embodiments of the present disclosure, and thus duplicative descriptions may be omitted herein.

Exemplary embodiments of the present disclosure will be described more fully below (e.g., with reference to the accompanying drawings). Like reference numerals may refer to like elements throughout the specification and drawings.

Referring toFIGS. 1A, 1B, 1C, 2A, 2B and 2C, in accordance with an aspect of the present disclosure, a tissue retrieval bag100includes a brim101defining a bag mouth102. The brim101is selectively transitionable between a first configuration (see, e.g.,FIG. 1B) in which the bag mouth102is biased open and a second configuration (see, e.g.,FIG. 1A) in which the brim101is compressed (e.g., to cinch the bag mouth102closed). A bag body103extends from the brim101and defines a pouch104for holding a tissue specimen. The bag body103including at least one spine105is operably associated with the brim101and depends therefrom. The spine105is configured to enable the bag body103to furl and unfurl about the brim101. For example, the spine105may be in a rolled up configuration (see, e.g.,FIG. 1B) before the release of a second release tab (e.g., second release tab107) which allows the spine105to return to an initial shape/configuration to unfurl the bag body103as described in more detail below. In some aspects, two spines105may be respectively positioned on two sides of the brim101, such as at opposite sides of the brim101. Thus, opposite sides of the bag body103may be substantially simultaneously unfurled by the two spines105upon release of the second release tab107.

Various release tabs and/or releases are described in more detail below and allow the tissue retrieval bag100to be compressed for insertion through a shaft of a surgical instrument (e.g., having a 15 mm port), incision or natural body orifice. The tissue retrieval bag100may be selectively compressible or provided in a pre-compressed state depending upon a particular purpose. For the purposes herein, the tissue specimen bag100is described in a pre-state to facilitate introduction into a surgical cavity. For example, when the tissue retrieval bag100has the brim101compressed in the second configuration and the bag body103in the furled state, the tissue retrieval bag100is sufficiently sized (e.g., is sufficiently narrow) to allow passage of the tissue retrieval bag100through a shaft of a surgical instrument, or through an incision or natural body orifice.

Turing back toFIGS. 1A-1C, a first release tab106is operably coupled to the brim101. The first release tab106holds the brim101in the second configuration (i.e., a compressed state) The first release tab106, upon release thereof, causes the bias of the brim101to transition the bag brim101from the second configuration (i.e., a compressed configuration) to the first configuration (i.e., an uncompressed or open state).

As mentioned above, one or more second release tabs107is operably coupled to the brim101. Second release tab(s)107, upon release thereof, allows one or more spines105to unfurl the bag body103about the brim101to deploy the bag body103. While a single first release tab107may be operably coupled to the brim101, two or more second release tabs107(see, e.g.,FIG. 1B) may be operably coupled to the brim101. Each of the second release tabs107may release a corresponding spine105to unfurl the bag body103.

In some aspects, the brim101includes or is formed of a shape memory alloy including nickel and titanium. In some aspects, the spine105includes or is formed of a shape memory alloy including nickel and titanium. The brim101in the first configuration may be substantially elliptical and may have a width across one of its major or minor axes of less than about 15 mm.

The first release tab106includes a perforated edge201between a first side210and a second side211of the brim101. The first release tab106is connected with a release tether202configured to separate the first release tab106along the perforated edge201. Pulling the release tether202separates the first release tab106along the perforated edge201to transition the brim101to the first open configuration. The release tether202may include an external pull203configured for positioning outside a patient's body cavity or therewithin.

The tissue retrieval bag described below with reference toFIGS. 3A, 3B, 3C, 4A, 4B and 4Cis substantially the same as the tissue retrieval bag100described above with reference toFIGS. 1A-2Cunless otherwise indication. Thus duplicative descriptions may be omitted below.

Referring toFIGS. 3A, 3B, 3C, 4A, 4B and 4C, in one embodiment, second release tab(s)107includes a first release flap401coupled to a first side210of the brim and a second release flap402coupled to a second side211of the brim101. The first and second release flaps401and402of second release tab107each include a perforated edge411and412, respectively, defined therealong. The first and second release flaps401and402of the second release tab107are connected to each other by a tether404. The tether404substantially simultaneously separates the first and second release flaps401and402of the second release tab107along the respective perforated edges411and412of the first and second release flaps401and402(e.g., after the first release tab106has been separated—see, e.g.,FIGS. 4A-4C). The tether404includes an external pull403configured for positioning outside of a patient's body cavity or therewithin.

A further description of a tissue retrieval bag according to the present disclosure can be found in U.S. patent application Ser. No. 16/391,408, filed on Apr. 23, 2019, the disclosure of which is incorporated by reference herein in its entirety.

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 surgeon 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 surgeon 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 surgeons or nurses may prep the patient for surgery and configure the robotic surgical system with one or more of the instruments disclosed herein while another surgeon (or group of surgeons) remotely control the instruments via the robotic surgical system. As can be appreciated, a highly skilled surgeon 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.

The robotic arms of the surgical system are typically coupled to a pair of master handles by a controller. The handles can be moved by the surgeon to produce a corresponding movement of the working ends of any type of surgical instrument (e.g., end effectors, graspers, knifes, scissors, etc.) which may complement the use of one or more of the embodiments described herein. The movement of the master handles may be scaled so that the working ends have a corresponding movement that is different, smaller or larger, than the movement performed by the operating hands of the surgeon. The scale factor or gearing ratio may be adjustable so that the operator can control the resolution of the working ends of the surgical instrument(s).

The master handles may include various sensors to provide feedback to the surgeon relating to various tissue parameters or conditions, e.g., tissue resistance due to manipulation, cutting or otherwise treating, pressure by the instrument onto the tissue, tissue temperature, tissue impedance, etc. As can be appreciated, such sensors provide the surgeon with enhanced tactile feedback simulating actual operating conditions. The master handles may also include a variety of different actuators for delicate tissue manipulation or treatment further enhancing the surgeon's ability to mimic actual operating conditions.