GB2602993A - Bladder tumour retrieval device for single user operation - Google Patents

Bladder tumour retrieval device for single user operation Download PDF

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Publication number
GB2602993A
GB2602993A GB2100889.1A GB202100889A GB2602993A GB 2602993 A GB2602993 A GB 2602993A GB 202100889 A GB202100889 A GB 202100889A GB 2602993 A GB2602993 A GB 2602993A
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GB
United Kingdom
Prior art keywords
housing
tissue
tissue grasper
retrieval device
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2100889.1A
Other versions
GB202100889D0 (en
Inventor
Musgrove Faith
Nagtegaal Marno
Stokes Talia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gyrus Medical Ltd
Original Assignee
Gyrus Medical Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gyrus Medical Ltd filed Critical Gyrus Medical Ltd
Priority to GB2100889.1A priority Critical patent/GB2602993A/en
Publication of GB202100889D0 publication Critical patent/GB202100889D0/en
Publication of GB2602993A publication Critical patent/GB2602993A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/32056—Surgical snare instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00287—Bags for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00353—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery one mechanical instrument performing multiple functions, e.g. cutting and grasping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22072—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00—General characteristics of surgical instruments
    • A61B2217/002—Auxiliary appliance
    • A61B2217/007—Auxiliary appliance with irrigation system

Abstract

A bladder tumour retrieval device 10 comprising a housing 12 comprising a tissue grasper engagement portion, a tissue grasper receiving portion 22, bag deployment handle receiving portion 32 and an irrigation system receiving portion 26. A first elongate shaft 14 extends from the housing. A tissue grasper 38 comprises a handle in contact with the tissue grasper engagement portion, and a second shaft extending from the handle. A tissue retrieval system comprises an elongate deployment handle 24 engageable with the bag deployment handle receiving portion 32 and a tissue retrieval bag located adjacent an end of the first shaft distal to the deployment handle. An irrigation system engages with the irrigation system receiving portion and comprises an elongate fluid reservoir and a fluid outlet for engagement with the irrigation system receiving portion.

Description

BLADDER TUMOUR RETRIEVAL DEVICE FOR SINGLE USER OPERATION
The present invention relates to a bladder tumour retrieval device. In particular, the present invention relates to a bladder tumour retrieval device having the combined functions of tissue grasper, irrigation system and tissue bag retrieval system for single user operation.
BACKGROUND OF THE INVENTION
Endoscopic and laparoscopic surgical techniques are well-known for abdominal operations and, in particular, abdominal operations for the removal of tumour tissue, without the need for the large incisions required by traditional surgery techniques. Typically, when performing tissue removal using endoscopic or laparoscopic techniques, it is necessary to have three separate devices inserted into the patient through a natural orifice e.g., the camera, a grasping/cutting device, and a tissue retrieval bag. For laparoscopic procedures, this requires at least three separate incisions to be made in the patient, or a single enlarged incision. This is undesirable for a patient and it can lead to increased risk of infection, longer recovery times and increased discomfort for the patient during recuperation. For endoscopic procedures where multiple instruments are inserted through a natural orifice, there will need to instrument changes i.e. changes between cutting instrument, grasper, and retrieval bag, via an endoscope that enables the surgeon a view of the surgical site.
A further complication that arises from endoscopic and laparoscopic surgical techniques, where multiple instruments need to be used at the same time, is that each device inserted into the patient requires a separate operator. This presents problems with respect to coordinating the operation of the different devices as well as being spatially challenging when multiple operators need to be accommodated in a finite space adjacent the patient.
One solution would be to have a single surgeon operate all of the devices. However, this is not a practical solution as a surgeon would need to repeatedly pick up and put down each device during a surgical procedure. Further, some manipulations require that more than one device is used at the same time. For example, when retrieving tissue during a surgical procedure, tissue graspers need to be operated to grasp tissue at the same time as either an irrigation system is operated to irrigate the tissue, or a tissue retrieval bag is placed adjacent the tissue graspers to collect the grasped tissue prior to removal from the abdomen of the patent.
There is therefore a need for an alternative surgical instrument arrangement to allow single user operation without compromising instrument function. The present invention seeks to address the problems of prior art devices.
SUMMARY OF THE INVENTION
A first aspect of the present invention provides a bladder tumour retrieval device for operation by a single user, the bladder tumour retrieval device comprising: a a housing comprising a tissue grasper engagement portion, a tissue grasper receiving portion, a bag deployment handle receiving portion and an irrigation system receiving portion; and b a first elongate shaft extending from the housing, the housing and first elongate shaft defining an elongate aperture therethrough, the aperture defining a first axis, the irrigation system receiving portion in fluid communication with the aperture c. a tissue grasper comprising a handle in contact with the tissue grasper engagement portion, and a second shaft extending from the handle, at least a portion of the second shaft extendable through the tissue grasper receiving portion and through the aperture; d a tissue retrieval system comprising an elongate deployment handle engageable with the deployment handle receiving portion and extendable through the aperture, and a tissue retrieval bag located adjacent an end of the first shaft distal to the deployment handle; and e. an irrigation system engaged with the irrigation system receiving portion, the irrigation system comprising an elongate fluid reservoir having a fluid outlet for engagement with the irrigation system receiving portion, wherein the fluid reservoir is in fluid communication with the aperture.
Thus, the present invention provides a device that includes all the essential functions of tissue grasping, tissue irrigation and tissue retrieval that can be operated by a single user.
The irrigation system is operable to aspirate saline or fluid from the tissue retrieval bag. In one embodiment, the elongate fluid reservoir may comprise a syringe. Alternatively, the 15 20 25 elongate fluid reservoir may comprise a negative pressure system such as a suction line and pump managed by a control valve.
In one embodiment, at least a portion of the tissue grasper is integral with the housing. Preferably, the tissue grasper is located centrally within the housing, thereby providing ease 5 of access to the tissue grasper by both a left-handed and a right-handed user.
Alternatively, the tissue grasper is reversibly engageable with the housing. This allows multiple tissue grasper receiving portions to be provided on the housing to allow the tissue grasper location relative to the housing to be selected based on the preferences of a user.
In one embodiment, the elongate deployment handle extends away from the housing in a direction transverse to the axis defined by the shaft. This is particularly advantageous when the housing is a straight handle design, rather than a pistol grip handle design. This arrangement improves the ergonomics of the device and positions the deployment handle away from the tissue grasper to avoid one obstructing access to the other.
In one embodiment, the tissue grasper receiving portion is aligned with the first axis and is located distal to the first elongate shaft. This locates the tissue grasper receiving portion to the rear of the housing i.e., at the opposite side of the housing to the first shaft, but aligned with the first shaft so that the second shaft may be easily received into the housing and through the aperture to the distal end of the first shaft.
In one embodiment, the tissue grasper engagement portion is engaged with the housing in a 20 plane substantially transverse to the tissue grasper receiving portion. This ensures that the tissue grasper handle and tissue grasper second shaft are suitably arranged to prevent the second shaft from obstructing access by a user to the tissue grasper handle during use.
In one embodiment, the bag deployment handle receiving portion defines a second axis substantially transverse to the first axis. This ensures that the elongate deployment handle of the tissue retrieval system extends from the housing in a direction that will not interfere with the second shaft (of the tissue grasper engagement portion) as it extends away from the housing.
In a further embodiment, the elongate deployment handle extends from the housing at an acute angle from the first axis in a direction away from the first shaft. Thus, the deployment 30 handle is located on the opposing side of the housing from the first shaft.
The first aperture defined by the housing and the first elongate shaft comprises multiple lumens to accommodate at least a portion of the second shaft of the tissue grasper, and the elongate deployment handle of the tissue retrieval system. In addition, a further lumen is provided to accommodate the telescope allowing visualisation of the surgical site. Fluid is passed through the first aperture in the gap between the lumens and the interior wall of the first elongate shaft. The three lumens are non-concentric, with the tissue grasper lumen and the tissue retrieval system lumen being almost side-by-side, with the tissue grasper lumen being marginally higher so as to facilitate the dropping of tissue from the tissue grasper into the tissue retrieval bag during surgery. Alternatively, the two lumens may be side-by-side if the tissue retrieval bag is spring loaded and drops slightly lower than the grasper axis when deployed. The telescope lumen is located above both the tissue grasper lumen and the tissue retrieval system lumen.
Preferably, the portion of the handle of the tissue grasper distal to the second shaft extends away from the body in a direction towards the first shaft. Thus, the portion of the tissue grasper handle distal to the second shaft extends away from the housing in an opposing direction to the deployment handle. This provides unobstructed access to the tissue grasper handle by a user during use, without risk of interference from the elongate deployment handle In a further embodiment, the tissue grasper further comprises a trigger mechanism for operation by a user to operate the tissue grasper, the trigger mechanism being located at a distal end of the handle to the second shaft.
Preferably, the deployment handle extends from the housing in a direction away from the first elongate shaft such that the deployment handle is distal to the trigger mechanism. Therefore, a user seeking to operate the tissue grasper will have clear and unobstructed access to the trigger mechanism without risk of accidental operation of the deployment handle.
In one embodiment, the irrigation system extends from the housing in a direction substantially parallel to the deployment handle for a distance from the housing that differs from the distance that the deployment handle extends from the housing. This has the benefit that the irrigation system is extending in a direction away from the tissue grasper handle, so is well spaced for operation by a user. Also, as the irrigation system extends a different distance from the housing than the deployment handle, they are easily distinguishable from one another for access by a user, during use.
Preferably, the deployment handle extends a greater distance from the housing than the irrigation system, thus allowing a user unobstructed access to the portion of the deployment handle distal to the body without interference from the irrigation system.
In a further embodiment, the bladder tumour retrieval device further comprises a collar engaged with the housing through which the deployment handle extends during use. This holds the deployment handle in position relative to the housing during use, and preventing it from hinging at the tissue retrieval system inlet and interfering with access to other parts of the device.
In one embodiment, at least one of the tissue grasper, tissue retrieval system and irrigation system are reversibly attachable to the housing. Preferably, all of the tissue grasper, tissue retrieval system and irrigation system are reversibly attachable to the housing. This facilitates ease of manufacture, storing, cleaning, and maintenance of the various components of the device.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the present invention is now described by way of example only and with reference to the following figures: Figure 1 is a side view of a first embodiment of a bladder tumour retrieval device housing, shaft, and tissue grasper in accordance with the present invention; Figure 2 is a perspective view of the embodiment of figure 1, showing the tissue 20 grasper mounted on a first side of the housing of the bladder tumour retrieval device housing; Figure 3 is a perspective view of the embodiment of figure 1, showing the tissue grasper and securing means detached from the housing of the bladder tumour retrieval device housing; Figure 4 is a perspective view of the embodiment of figure 1, showing the tissue grasper mounted on a second side of the housing of the bladder tumour retrieval device housing; Figure 5 is a view from above of the embodiment of figure 1, showing the tissue grasper and securing means detached from the housing of the bladder tumour retrieval 30 device housing; Figure 6 is a view from above of the embodiment of figure 1, showing the tissue grasper mounted on the first side of the housing of the bladder tumour retrieval device housing Figure 7 is a view from above of the embodiment of figure 1, showing the tissue grasper mounted on the second side of the housing of the bladder tumour retrieval device housing; Figures 8 and 9 are side views of the embodiment of figure 1 showing the tissue graspers, irrigation system and bag deployment handle engaged with the housing of the bladder tumour retrieval device; Figure 10 is a side view of a further embodiment of a bladder tumour retrieval device housing, shaft, and tissue grasper in accordance with the present invention; and Figure 11 is a side view of a further embodiment of a bladder tumour retrieval device housing, shaft, and tissue grasper in accordance with the present invention
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figures 1 to 9 show a bladder tumour retrieval device 10 comprising a housing 12 and shaft 14, both of which define an aperture 16 therethrough. The housing 12 of bladder tumour retrieval device 10 comprises a first side 18 and an opposing second side 20. The first side 18 comprises a first tissue grasper receiving portion 22 and the second side 20 comprises a second tissue grasper receiving portion 24. In the embodiment shown in the figures, each of the first and second tissue grasper receiving portions 22, 24, comprise respective concave portions.
Housing 12 includes an irrigation system receiving portion in the form of a syringe cavity 26 to which a syringe 28 may be connected, as shown in figures 8 and 9. Syringe cavity 26 is in fluid communication with aperture 16 such that, in use, fluid expelled from a connected syringe 28 on depression of syringe plunger 29 will flow through syringe cavity 26 and through aperture 16 in housing 12 and shaft 14 and be expelled from the end 30 of shaft 14 distal to housing 12.
Housing 12 further includes a bag deployment handle receiving portion 32 to which a bag deployment handle 34 may be connected, as shown in figures 8 and 9. Bag deployment 30 handle 34 is provided with grip 35 for gripping by a user when manipulating the bag deployment handle 34. A collar 36 is provided on housing 12 through which bag deployment handle 34 extends during use. Collar 36 retains bag deployment handle 34 in a suitable position for ease of access by a user. Bag deployment handle 34 is in mechanical communication with a tissue bag (not shown) via aperture 14. During use, the tissue bag is located within shaft 14. Once the end 30 of shaft 14 has been inserted into the body cavity of a patient, bag deployment handle 34 may be operated by a user to deploy the tissue bag i.e., to extend the tissue bag beyond the end 30 of shaft 14 within the body cavity. Once deployed, the tissue bag may be used to collect retrieved tissue before being withdrawn, either fully or partially, back into shaft 13 on further operation of the bag deployment handle 34 by the user. Distal end 30 of shaft 14 may then be withdrawn from the body cavity and 10 the retrieved tissue removed from the tissue bag for further analysis and/or disposal.
Bladder tumour retrieval device 10 further comprises a detachable tissue grasper 38. Tissue grasper 38 comprises a shaft 40 and a handle 42 engaged with shaft 40. A trigger mechanism 44 is provided at an end 47 of the handle 42 distal from shaft 40. Shaft 40 extends from handle 42 and extends into housing 12 through tissue grasper receiving portion 43 and along aperture 16 in housing 12 and shaft 14 of bladder tumour retrieval device 10.
Detachable tissue grasper 38 further comprises conventional tissue grasping jaws or surgical tweezers (not shown) at an end of shaft 40 distal to trigger mechanism 44. Opening or closing of the jaws or tweezers may be initiated by operation of the trigger mechanism 44 by a user after shaft 40 has been extended sufficiently through aperture 16 that tissue grasping jaws/surgical tweezers extend beyond distal end 30 of shaft 14.
When mounting tissue grasper 38 on housing 12 of bladder tumour retrieval device 10, a portion of handle 42 of tissue grasper 38 is located within one of the first and second tissue grasper receiving portions 22, 24. In figures 1 and 2, tissue grasper 38 is engaged with first tissue grasper receiving portion 22. In figure 4 tissue grasper 38 is engaged with second tissue grasper receiving portion 24.
In the embodiment shown in the figures, first and second tissue grasper receiving portions 22, 24 have a concave profile. The portion of handle 42 of tissue grasper 38 is provided with a corresponding convex profile, such that handle 42 can be readily located within either of the first and second tissue grasper receiving portions 22, 24. However, any suitable complementary profiles could be used in addition to, or as an alternative to, those shown in the figures.
A securing means 46 is provided to secure the tissue grasper 38 in place once handle 42 has been located in one of the tissue grasper receiving portions 22, 24. In the example shown in the figures, securing means 46 comprises a body 48 with a curved profile dimensioned to fit around a portion of the handle 42 of tissue grasper 38. Securing means 46 further comprises engagement portions 50 which engage with securing means engagement portions 52 provided on housing 12 adjacent first and second tissue grasper receiving portions 22, 24.
It is to be appreciated that engagement portions 50 are releasably engageable with securing means engagement portions 52. This may be achieved by screw fitting, press-stud engagement, snap-fit engagement, hook and loop Velcroe-style engagement or any other method known to the skilled person and suitable for function.
In the embodiment shown in the figures, tissue grasper 38 is further provided with opposing rings 39 extending from handle 42 and defining apertures 39'. A user may insert their fingers through apertures 39' to stabilise the grasper and allow the operation of trigger mechanism 44. However, once attached to housing 12 of bladder tumour retrieval device 10, gripping the tumour retrieval device 10 itself provides sufficient stability to allow the trigger mechanism 44 to be operated. Further, corresponding ring channels 54 are provided in housing 12 into which a portion of opposing rings 39 are received when the tissue grasper 38 is mounted on housing 12 of bladder tumour retrieval device 10.
Once handle 42 of tissue grasper 38 has been located in one of the first and second tissue grasper receiving portions 22, 24, and a portion of opposing rings 39 have been located in ring channels 54, securing means 46 may be located around handle 42 of tissue grasper 38 and engagement portions 52 extended through apertures 39' to engage with engagement portions 50 of housing 12, thereby securing tissue grasper 38 in place relative to bladder tumour retrieval device 10.
When used, for example by a surgeon carrying out a medical procedure, the user may select which side of housing 12 the tissue grasper 38 is to be attached. This decision may be influenced by several factors, including the user's right-handed or left-handed preference and/or the user's hand strength.
Further, the present invention accommodates the user's preferences when selecting the desired position of the tissue grasper without the need for two separate bladder tumour retrieval devices with fixed position tissue graspers. Instead, a single bladder tumour retrieval device housing 10 may be provided with a single detachable tissue grasper 38 capable of being releasably mounted at multiple locations on the bladder tumour retrieval device housing 10.
Figures 8 and 9 show the device with an irrigation system i.e., syringe 28 and deployment handle 35 attached to housing 12.
As can be seen from figures 8 and 9, bladder tumour retrieval device 10 comprises a housing 12 having a tissue grasper engagement portion comprising first tissue grasper receiving portion 22, ring channels 54, and engagement portions 52. Tissue grasper 38 is engaged with housing 12 as previously described.
Bladder tumour tissue retrieval device 10 further comprises a tissue grasper receiving 10 portion 43 which is aligned with aperture 16, to which the shaft 40 of tissue grasper 38 extends during use, as previously described.
Bladder tumour tissue retrieval device 10 further comprises an irrigation system receiving portion 26, within which an irrigation system i.e., syringe is received, in use. Syringe 28 comprises a plunger 29 for expelling fluid from syringe 28 and a fluid outlet 29 (not shown) which, in use, is located in irrigation system receiving portion 26 and is in fluid communication with aperture 16, such that depression of syringe plunger 29 expels fluid from syringe 28 in the direction shown by arrow A in figure 8 into aperture 16 in housing 12 and along aperture 16 in shaft 14, followed by expulsion of fluid from the end 30 of shaft 14 into the body cavity of a patient during use to irrigate body tissues.
As discussed above and shown in the figures, the trigger mechanism 44 of tissue grasper 38 extends away from housing 12 in the same direction as shaft 14. Irrigation system receiving portion 26 extends downwards from housing 12 at an angle away from shaft 14 such that syringe 28 received within irrigation system receiving portion 26 extends in a direction away from trigger mechanism 44. This spatial separation of both trigger mechanism 44 and plunger 29 of syringe 28 means a user has free and unobstructed access to both the trigger mechanism 44 and plunger 29.
Deployment handle 34 of tissue retrieval system extends from bag deployment handle receiving portion 32 of housing 12 in a direction substantially parallel to syringe 28. This leaves unobstructed access to trigger mechanism 44 of tissue grasper 38. Further, deployment handle 34 extends beyond plunger 29 such that grip 35 is located below syringe 28. Thus, in use, a user would have clear and unobstructed access to grip 35 of deployment handle 34.
Finally, as can be seen from the figures, and particularly figures 1 to 3, it is clear that bag deployment handle receiving portion 32 and collar 36 are located external to housing 12 and spatially separated from syringe cavity 26. Thus, in use, bag deployment handle 34 is spatially separated from syringe 28, such that during use a user would have clear and unobstructed access to plunger 29.
Therefore, during use, a single user can grip housing 12 or syringe 28 with one hand and operate any of the various functions of tissue grasping, tissue irrigation or tissue retrieval bag deployment with the other hand. Further, the strategic spatial arrangement of the various functions provides unobstructed access for a user.
Thus, the present invention provides a multi-functional bladder tumour retrieval device which is operable by a single user.
It is to be appreciated that, although in the embodiment shown in the figures, housing 10 is shown with two tissue grasper receiving portions 24, housing 10 may be provided with a single tissue grasper receiving portion 24.
It is to be appreciated that, in use, a camera feed could be extended through aperture 16 to allow the one device to also view the body cavity throughout the procedure, thus further minimising the number of devices required during a surgical procedure.
Figure 10 shows a further embodiment of a bladder tumour retrieval device 10, housing 12, shaft 14 and tissue grasper 38. In this embodiment, the handle 42 of tissue grasper 38 is integral with housing 12, and extending from housing 12 in opposing directions such that trigger mechanism 44 is located on one side of housing 12 and shaft 40 extends from an opposing side of housing 12 to trigger mechanism 44.
In this embodiment, the central location of tissue grasper 38 within housing 12 allows the device 10 to be used with ease by either a right-handed or a left-handed user. This provides an additional advantage that there is no need to provide multiple tissue grasper engagement portions on the exterior of housing 12 or to detach tissue grasper 38 from housing 12 in order to relocate tissue grasper 38 at an alternative location on housing 12 to accommodate the preferences of different users. Instead, left-handed and right-handed users can comfortably access the centrally located tissue grasper 38 provided integrally to the housing 12.
Figure 11 shows a further embodiment of a bladder tumour retrieval device 10, housing 12, shaft 14 and tissue grasper 38. In this embodiment, the handle 42 of tissue grasper 38 is integral with housing 12, in a similar manner to the embodiment of figure 10. However, the housing of the embodiment of figure 11 is a straight handle design, rather than the pistol grip design of figure 10. In this design, the deployment handle receiving portion 32 is provided at one end of housing 12 distal to shaft 14, with the deployment handle extending downwards away from housing 12. In addition, the irrigation system receiving portion 26 is also provided at one end of housing 12 distal to shaft 14, with the irrigation system 28, 35, extending away from the housing in a direction away from the shaft 14 such that shaft 14 and irrigation 10 system 28 define a common axis.
This embodiment integrates the advantages of the other embodiments, i.e., unobstructed access to all functions of the device by a single user, into a straight handle design. In addition, the integral tissue grasper feature accommodates ease of use for both left and right-handed users as discussed in relation to the embodiment of figure 10.

Claims (15)

  1. CLAIMS: 1. A bladder tumour retrieval device for operation by a single user, the bladder tumour retrieval device comprising: a a housing comprising a tissue grasper engagement portion, a tissue grasper receiving portion, a bag deployment handle receiving portion and an irrigation system receiving portion; and b a first elongate shaft extending from the housing, the housing and first elongate shaft defining an elongate aperture therethrough, the aperture defining a first axis; c. a tissue grasper comprising a handle in contact with the tissue grasper engagement portion, and a second shaft extending from the handle, at least a portion of the second shaft extendable through the tissue grasper receiving portion and through the aperture; d a tissue retrieval system comprising an elongate deployment handle engageable with the bag deployment handle receiving portion and extendable through the aperture, and a tissue retrieval bag located adjacent an end of the first shaft distal to the deployment handle; and e. an irrigation system engaged with the irrigation system receiving portion, the irrigation system comprising an elongate fluid reservoir having a fluid outlet for engagement with the irrigation system receiving portion, wherein the fluid reservoir is in fluid communication with the aperture.
  2. 2. A bladder tumour retrieval device as claimed in claim 1, wherein at least a portion of the tissue grasper is integral with the housing. 30
  3. 3. A bladder tumour retrieval device as claimed in claim 1, wherein the tissue grasper is reversibly engageable with the housing.
  4. 4. A bladder tumour retrieval device as claimed in claim 1, wherein the elongate deployment handle extends from the housing in a direction transverse to the axis defined by the shaft
  5. 5. A bladder tumour retrieval device as claimed in any preceding claim, wherein the tissue grasper receiving portion is aligned with the first axis and is located distal to the first elongate shaft.
  6. 6. A bladder tumour retrieval device as claimed in claim 1 or claim 3, wherein the tissue grasper engagement portion is arranged on the housing in a plane substantially transverse to the tissue grasper receiving portion.
  7. 7 A bladder tumour retrieval device as claimed in any preceding claim, wherein the bag deployment handle receiving portion defines a second axis substantially transverse to the first axis.
  8. 8 A bladder tumour retrieval device as claimed in any preceding claim, wherein the elongate deployment handle extends from the body at an acute angle from the first axis in a direction away from the first shaft.
  9. 9. A bladder tumour retrieval device as claimed in any preceding claim, wherein the portion of the handle of the tissue grasper distal to the second shaft extends away from the housing in a direction towards the first shaft.
  10. 10. A bladder tumour retrieval device as claimed in any preceding claim, wherein the tissue grasper further comprises a trigger mechanism for operation by a user to operate the tissue grasper, the trigger mechanism being located at a distal end of the handle to the second shaft.
  11. 11. A bladder tumour retrieval device as claimed in any preceding claim, wherein the deployment handle extends from the housing in a direction away from the first elongate shaft such that the deployment handle is distal to the trigger mechanism.
  12. 12. A bladder tumour retrieval device as claimed in any preceding claim, wherein the irrigation system receiving portion extends from the housing in a direction substantially parallel to the deployment handle, but for a different distance from the housing than the deployment handle.
  13. 13. A bladder tumour retrieval device as claimed in any preceding claim, further comprising a collar engaged with the housing through which the deployment handle extends during use.
  14. 14. A bladder tumour retrieval device as claimed in any preceding claim, wherein at least one of the tissue grasper, tissue retrieval system and irrigation system are reversibly attachable to the housing.
  15. 15. A bladder tumour retrieval device as claimed in any one of claims 1, 3 and 5 to 13, wherein all of the tissue grasper, tissue retrieval system and irrigation system are reversibly attachable to the housing.
GB2100889.1A 2021-01-22 2021-01-22 Bladder tumour retrieval device for single user operation Pending GB2602993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2100889.1A GB2602993A (en) 2021-01-22 2021-01-22 Bladder tumour retrieval device for single user operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2100889.1A GB2602993A (en) 2021-01-22 2021-01-22 Bladder tumour retrieval device for single user operation

Publications (2)

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GB202100889D0 GB202100889D0 (en) 2021-03-10
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WO2004002334A1 (en) * 2002-06-28 2004-01-08 Ethicon Gmbh Surgical instrument
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US20170007345A1 (en) * 2006-12-01 2017-01-12 Boston Scientific Scimed, Inc. Medical systems comprising tool members
US20180206863A1 (en) * 2017-01-23 2018-07-26 Boston Scientific Scimed, Inc. Medical device handles and related methods
US20190038113A1 (en) * 2017-08-07 2019-02-07 Boston Scientific Scimed, Inc. Medical systems, devices, and related methods
US20200060665A1 (en) * 2017-02-15 2020-02-27 Bjerggaard Urologi v Jørgen Bjerggaard Jensen Interventional device for specimen retrieval

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004002334A1 (en) * 2002-06-28 2004-01-08 Ethicon Gmbh Surgical instrument
US20140025048A1 (en) * 2004-12-01 2014-01-23 Boston Scientific Scimed, Inc. Single operator medical device handles and related methods of use
US20170007345A1 (en) * 2006-12-01 2017-01-12 Boston Scientific Scimed, Inc. Medical systems comprising tool members
US20180206863A1 (en) * 2017-01-23 2018-07-26 Boston Scientific Scimed, Inc. Medical device handles and related methods
US20200060665A1 (en) * 2017-02-15 2020-02-27 Bjerggaard Urologi v Jørgen Bjerggaard Jensen Interventional device for specimen retrieval
US20190038113A1 (en) * 2017-08-07 2019-02-07 Boston Scientific Scimed, Inc. Medical systems, devices, and related methods

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