WO2008141288A1 - Devices and methods for stomach partitioning - Google Patents
Devices and methods for stomach partitioning Download PDFInfo
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- WO2008141288A1 WO2008141288A1 PCT/US2008/063440 US2008063440W WO2008141288A1 WO 2008141288 A1 WO2008141288 A1 WO 2008141288A1 US 2008063440 W US2008063440 W US 2008063440W WO 2008141288 A1 WO2008141288 A1 WO 2008141288A1
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- tissue
- pinch
- engager
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- pinches
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- ZEZOIRFVLXEXBC-UHFFFAOYSA-N CCN1CCC1 Chemical compound CCN1CCC1 ZEZOIRFVLXEXBC-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/0083—Reducing the size of the stomach, e.g. gastroplasty
- A61F5/0086—Reducing the size of the stomach, e.g. gastroplasty using clamps, folding means or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0643—Surgical staples, i.e. penetrating the tissue with separate closing member, e.g. for interlocking with staple
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/10—Surgical instruments, devices or methods, e.g. tourniquets for applying or removing wound clamps, e.g. containing only one clamp or staple; Wound clamp magazines
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
-
- 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
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/0083—Reducing the size of the stomach, e.g. gastroplasty
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0089—Instruments for placement or removal
-
- 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
- A61B2017/00349—Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B2017/0647—Surgical staples, i.e. penetrating the tissue having one single leg, e.g. tacks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07228—Arrangement of the staples
-
- 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
- A61B2017/2901—Details of shaft
- A61B2017/2905—Details of shaft flexible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/30—Surgical pincettes without pivotal connections
- A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction
Definitions
- Surgical procedures used to modify the shape and/or size of a stomach are effective in reducing weight and resolving associated co morbidities. Unfortunately these surgical procedures are invasive and are associated with high levels of peri-operative and post operative complications.
- Natural orifices include, but are not limited to the esophagus, anus and vagina. These procedures are less invasive by nature but have limitations as will be described below.
- stomach modification is by the use of surgical or laparoscopic staplers. These devices are able to surgically or laparoscopically appose multiple layers of tissue and connect them by use of multiple staple rows.
- Figs. IA- 1C There was, and is, a high rate of failure of these staple lines due to the nature of the GI tract. Staple line dehiscence was common and resulted in inadequate clinical results.
- the solution was to surgically staple the tissue and cut between the staple lines. This enabled edge to edge healing to occur, and provided for a robust tissue bridge.
- Fig. 1C illustrates two section of stomach wall tissue joined according to the method of Figs. IA and IB.
- FIG. 2A schematically illustrates a prior art stomach partitioning method.
- Fig. 2B illustrates two section of stomach wall tissue joined and transected according to the method of Fig. 2A.
- Fig. 3 A is a perspective view of a partitioning tool.
- Fig. 3B schematically shows the staple holder of the partitioning tool of Fig. 3 A.
- Figs. 4A - 4C are plan views showing three examples of suitable staple holders.
- Fig. 5 A is a plan view of the partitioning tool of Fig. 3 A with the arms expanded.
- Fig. 5B is an end view of the partitioning tool of Fig. 5 A.
- Fig. 5C shows the partitioning tool of Fig. 3 A with the arms extended for streamlined advancement of the tool through the esophagus into the stomach.
- Figs. 5D and 5E are similar to Figs. 5A and 5B but show a modification in which the arms are spaced by an alternate angle.
- Fig. 6A is a perspective view of the partitioning tool illustrating extension of the graspers along intersecting paths.
- Fig. 6B is a perspective view of the partitioning tool illustrating extension of the graspers along parallel paths.
- Figs. 6C - 6D are perspective views of the distal shaft and stapler head of an alternative embodiment in which the direction of relative movement of the stapler head and anvil is transverse to the orientation of the distal portion of the shaft.
- Figs. 7A - 7G illustrate various forms of graspers.
- Fig. 7H is a plan view of a staple holder and illustrates a grasper drawing tissue across the surface of the staple holder.
- Figs. 71 - 7K are similar to Fig. 7H and show alternative staple holder shapes and grasper arrangements.
- Figs. 8 A - 8F are a series of drawings illustrating a first method of using the disclosed partitioning system.
- Figs. 9A - 9F are a series of drawings illustrating a second method of using the disclosed partitioning system.
- Figs. 9G - 9J are a series of drawings illustrating use of a modified partitioning system.
- Figs. 9K - 9N are a series of drawings illustrating use of yet another modified partitioning system.
- Figs. 90 - 9P illustrate an alternate of using the disclosed partitioning system.
- Figs. 9Q - 9S disclose exemplary methods for advancing the graspers in the method of Figs. 90 - 9P.
- Fig. 1OA is a plan view of a stomach illustrating a stomach wall partition formed in the stomach wall tissue.
- Figs. 1OB - 1OC illustrate a first orientation of plications forming a partition or tissue structure within the stomach.
- Figs. 1OD - 1OF illustrate a second orientation of plications forming a partition or tissue structure within the stomach.
- Figs. 1 IA - 1 IE illustrate various arrangements of plications to form plications in a stomach.
- Figs. 1 IF - I U illustrate formation of a partition by forming tissue plications around the shaft of an instrument disposed in the stomach.
- Fig. 12 schematically shows a stomach and illustrates various partition locations that can be formed by creating partitions or tissue structures as disclosed herein.
- Figs. 13A - 13E are a sequence of steps illustrating reversal of a stomach partition.
- Figs. 14A - 14D illustrate the use of plugs to close gaps between plications formed in tissue or to close cut holes formed in plications.
- Figs. 15A through 15D illustrate the use of plugs within holes cut into plications to hold two or more two-layer plications together, such as to form a partition.
- Figs. 16A and 16B illustrate the use of plugs positioned within holes cut into plications to restrict flow of food towards the distal stomach
- Fig. 17 illustrates plug designs having anchoring features to restrain the anchors within holes through tissue.
- Fig. 18 illustrates heads or lids for plugs.
- Fig. 19A is a perspective view of an alternative partitioning tool.
- Fig. 19B is a plan view of the jaws of the partitioning tool of Fig. 19A.
- Fig. 19C shows the jaws of the partitioning tool of Fig. 19A in the closed position.
- Fig. 19D is a perspective view illustrating use of the grasper to draw tissue through the partitioning tool of Fig. 19A, and use of the partitioning tool for tissue compression, stapling and optioning cutting.
- Fig. 19E illustrates a partition formed in a stomach using multiple plications formed according to the method shown in Fig. 19D.
- Figs. 2OA - 2OG illustrate use of a system comprising an alternate grasper and the partitioning tool of Fig. 3 A to close an opening in a body wall.
- Figs. 21 A - 21D show a stapler head of a partitioning tool and illustrate articulation and rotation features.
- Figs. 2 IE - 21 G illustrates use of the articulation and rotation features of Figs. 21A - 21D to access tissue within a stomach.
- the present application describes a device and method for forming tissue structures within, remodeling, or partitioning a body cavity, hollow organ or tissue tract.
- the application will discuss the device and method in connection with use in the stomach for formation of plications such as for stomach partitioning or other purposes, although they may be used for applications other than stomach remodeling or partitioning.
- stomach wall When an area of the stomach wall is drawn inwardly (bringing a two-layer "pinch” or fold of tissue toward the stomach exterior), corresponding regions of serosal tissue on the exterior of the stomach are positioned facing one another.
- two or more such areas or pinches of the stomach wall are engaged/grasped and drawn inwardly using instruments passed into the stomach via the mouth.
- the two or more pinches of tissue are held in complete or partial alignment with one another as staples or other fasteners are driven through the pinches, thus forming a four-layer tissue plication.
- adhesions formed between the opposed serosal layers create strong bonds that can facilitate retention of the plication over extended durations, despite the forces imparted on them by stomach movement.
- a cut or cut-out may be formed in the plication during or separate from the stapling step to promote edge- to-edge healing effects that will enhance tissue knitting/adhesion and will ultimately contribute to the durability of the plication, despite the fact that mucosal tissue of one tissue pinch is positioned in apposition with the mucosal tissue of the other tissue pinch.
- plications may be formed for a variety of purposes.
- plications may be used to induce weight loss by creating a barrier or narrowing within the stomach that will restrict the flow of food from the proximal stomach towards the distal stomach.
- a partition or barrier may be oriented as in Fig. 15 C or 15D to extend across the stomach, leaving only a narrow exit orifice through which food can flow from the proximal stomach to the distal stomach, or a similar antral barrier (Fig. 15C) may be formed that will slow stomach emptying of stomach contents into the pylorus.
- partitions or plications may be used to form a proximal pouch in the stomach or to reduce stomach volume to cause sensations of fullness after a patient eats relatively small quantities.
- Plications might also be used as a treatment for GERD to create a shield between the stomach and esophagus that will minimize reflux. Plications might also be used to close perforations in the stomach wall.
- an exemplary embodiment of a partitioning system includes a partitioning tool 10.
- the partitioning tool may include various mechanisms for applying a fastening element (e.g. clips, sutures, staplers etc.) to tissue
- the disclosed embodiment utilizes a stapler head 12 positioned at the distal end of an elongate shaft 14.
- the shaft is of sufficient length to allow it to be advanced into the target body cavity (e.g. stomach) through a natural orifice (e.g. the mouth).
- Stapler head 12 includes an anvil 16 having recesses 17 for holding staples, and a staple holder 18 (Fig. 3B).
- the staple holder is a removeable/replaceable cartridge and/or it may be refillable by inserting additional staples into it. In other embodiments, the staple holder may be neither replaceable nor refillable.
- a preferred stapler is a circular stapler which preferably contains multiple concentric rows of staples 20, surrounding a circular cutter 22.
- the cutter is not mandatory, and can be omitted if cutting of tissue is not desired.
- Applications for a plication tool that lacks a cutting element might include those involving the creation of a simple plication (e.g. a single pinch rather than a plication formed of two tissue pinches), apposition of multiple tissue layers, the closing of a stomach wall perforation, or the resection of a targeted tissue (i.e. appendix), etc.
- a circular staple arrangement may be preferable other configurations of staples are also suitable.
- the staples can be positioned to surround a central cutter of any shape when one is included.
- Suitable cutter shapes include the round cutter 22 of Fig. 4A, the rectangular cutter 22a Fig. 4C, a linear cutting blade 22b of the type shown in Fig. 4B, or an oval cutter etc..
- the cutter can be configured to simply cut layers of tissue (e.g. see the cutting blade 22b of Fig. 4B) or to remove a portion of tissue internal to the cutter (see the punch-type cutters 22, 22a of Figs. 4A and 4C).
- the staple holder 18 and anvil 16 are connected by an arm assembly having collapsible arms 24.
- the arms are collapsed into a generally elongate position (Fig. 5C) for insertion into the lumen of the body, but are opened to the expanded position
- the arms 24 include proximal and distal sections coupled by hinges 25.
- the arms are pivoted relative to the hinges for expansion and collapse of the arms.
- the arms can be linear, curved or oriented at varying angles relative to the staple cartridge.
- the arms 24 can be spaced by an angle of 180° as shown in Fig. 5B, or by a larger/smaller angle as shown in Fig. 5E.
- tissue acquisition devices coupled to or provided with the stapler are one or more, preferably two, three or more, tissue acquisition devices, which will also be referred to as "engagers” or “graspers” 26 which are designed to engage tissue and draw the tissue into position between the stapler anvil and cartridge.
- the graspers are positioned to pass from one side of the "window” bounded by the stapler arms, through the window, and used to grasp tissue on the opposite side of the window. These graspers are then withdrawn back through the window to draw the grasped tissue between the cartridge and anvil.
- the arms can engage tissue and draw it between the cartridge and anvil without necessarily passing through the window.
- Such embodiments include those similar to the Fig. 5E embodiment, in which the arms are oriented angularly relative to one another when viewed along the longitudinal axis of the device shaft.
- the graspers can be simple alligator or forceps type graspers 26, vacuum chambers 28, corkscrews which can be traditional corkscrews 30a or gear-driven perpendicular cork-screws 30b, hooks 32, or any combination thereof, such as a corkscrew 30 in combination with a vacuum chamber as shown in Fig. 7B.
- Fig. 7G shows corkscrew 30 longitudinally advanceable within a vacuum chamber 28 having a side facing opening, such that tissue can be drawn into vacuum chamber using suction, and such that the corkscrew 30 can then be moved in a longitudinal direction and screwed into the tissue within the vacuum chamber.
- a similar design using a longitudinally advanceable barb rather than a corkscrew may also be configured.
- Other alternative designs which are capable of acquiring the targeted tissue may instead be used.
- the term “grasper” is used to refer generally to any type of tool that can be used to engage or acquire tissue via any means (grasping, hooking, penetration, suction, adhesion, etc.) so the acquired tissue can be positioned between the staple holder and anvil.
- the term “pinch of tissue” may be used in this disclosure to refer to a fold, area, or tab of tissue acquired using a grasper for positioning of that fold, area ,or tab between the staple holder and anvil.
- Figs. 7H and 71 schematically illustrate use of a grasper 26 to draw acquired tissue into position between a staple holder 18 and an anvil (not shown).
- tissue that can be acquired by a single grasper 26 lacks the width to extend fully across the staple holder or anvil as shown
- an alternate grasper arrangement may be used in which each individual grasper is replaced by a pair of side-by-side graspers 26 as shown in Fig. 7J, or by a type of grasper that can acquire a broader area of tissue, such as the Alice clamp-type grasper 33 shown in Fig. 7K. Doing so can ensure that each acquired piece of tissue can be positioned to receive the full array of staples from the stapler holder.
- These arrangements give the pinch of tissue a leading edge that is more rectangular, as opposed to the more triangularly shaped pinch created using a single grasper.
- the graspers need not be integral to the stapler but could be separate tools used in conjunction with the stapler.
- the graspers are advanced to the target tissue site through guide tubes 34 on the stapler shaft 14, under direct visualization or fluoroscopy.
- the device shaft itself can be articulated to bring the tools into contact with the desired tissue.
- the guide tubes 34 may include articulation features (e.g. pullwires) to facilitate positioning of the graspers.
- the tissue graspers can additionally be equipped with articulation means to aid in grasper positioning and/or withdrawal of tissue into position between the cartridge and anvil. Grasping tools are passed from one side of the window W created by the arms 24 of the device. In the Fig.
- the graspers 26 extend non parallel to each other such that when retracted, the tissue acquired by each grasper overlaps the tissue acquired by the other grasper as illustrated in the sequence of steps shown in Figs. 8A - 8E.
- Graspers can instead be positioned parallel to one another and staggered slightly as in the Fig. 6B embodiment.
- This configuration allows tissue to be pulled in a relatively perpendicular orientation to the stapler head as illustrated in the sequence of steps shown in Figs. 9A - 9C.
- the device is activated thereby compressing tissue, firing staples, and in the preferred embodiment, cutting a central piece of tissue bounded by the staple lines. This cut enables the body to duplicate the strong edge to edge healing which occurs in durable surgical procedures.
- tissue plicators having features that may be used in the partitioning tool 10 to effect tissue compression, stapling firing, staple reinforcement, and/or cutting.
- U.S. Application No. 11/542,457 (U.S. 2007-0219571), Endoscopic Plication Device and Method, filed October 3, 2006
- U.S. Application No. 11/900,757 Endoscopic Plication Device and Method, filed September 13, 2007, and/or U.S. Application No.
- the proximal end of the shaft 14 remains outside the body.
- the tissue graspers 26 are passed through the guide tubes 34 on the stapler shaft.
- the graspers are passed from one side of the shaft, through the window W defined by the stapler arms 24, and used to grasp regions of stomach wall tissue as shown in Figs. 8B and 8C.
- the stapler head 12, shaft 14, guide tubes 34, and/or graspers 26 can be manipulated (e.g. deflected, articulated or rotated) to reach the desired tissue.
- the graspers are oriented to cross each other between the staple holder 18 and anvil 16.
- each of the individual graspers 26 may be replaced with a pair of spaced-apart graspers, so as to acquire a broader pinch of tissue.
- Fig. 8E The pinches of tissue are compressed between the staple holder and anvil, and staples are driven through the pinches of tissue as shown in Fig. 8E.
- at least two concentric rings of staples 20 are formed through the tissue, with a central core CC cut through the tissue by the cutter 22.
- the plicated tissue (Fig. 8F) is released from the tool 10, and the arms are pivoted to the elongated position of Fig. 5C.
- the plication comprises four layers of tissue (two from each tissue pinch), with the staples and the cut extending through all of the four layers.
- the plications may be reinforced using reinforcing rings and/or buttressing materials or substances as disclosed on Applicants' prior applications referred to above.
- the staple head 12 is mounted to the shaft in a position that is rotated (e.g. 90°) from the position shown in Fig. 6A.
- the staple holder and anvil may be moveable relatively towards one another in a direction that is transverse to the distal portion of the shaft, rather than generally parallel to the shaft.
- the staple head may be coupled to a pivot member 27 having a first end 29a pivotally coupled to the shaft 14, and a second end 29b pivotally coupled to the staple head at the hinge 25 of one of the arms 25.
- the stapler head 12, pivot member 27, and shaft 14 extend generally longitudinally as in Fig. 6D.
- the stapler head 12 is pivoted to a position generally transverse to the shaft 14.
- Optimal stapler head position is achieved by pivoting the stapler head relative to the pivot member 27 and/or pivoting the pivot member 27 relative to the shaft 14.
- the arms 24 are pivoted relative to the hinges 25 to decrease the relative separation between the anvil 16 and staple holder 18 for tissue compression.
- Figs. 6C - 6E include additional features useful for tissue compression and staple firing which are disclosed in greater detail in U.S. Application No. 12/050,169, Endoscopic Stapling Devices and Methods, filed March 18, 2008 (Attorney Docket No. BARO- 1900) which is incorporated herein by reference.
- the partitioning tool may be equipped to reorient the graspers as they withdraw the pinches of tissue towards the window, so as to ensure the pinches are properly aligned with one another and with the staple housing and anvil.
- Figs. 9A through 9F illustrate a second exemplary method for forming a plication in the stomach.
- This method is largely similar to that shown in Figs. 8A through 8E, but differs in that it is performed using the configuration of Fig. 6B in which the graspers 26 extend parallel to one another.
- each one of the parallel graspers 26 may be replaced with a pair of side-by-side graspers to allow acquisition of a broader pinch of tissue.
- the parallel graspers 26 are passed through the window W of the stapler head 12 and used to engage regions of tissue.
- the regions or pinches of tissue Tl, T2 are withdrawn through the window W as shown in Figs.
- Figs. 9G - 9J show a modification to the Fig. 9A embodiment in which the graspers 26 are coupled to a pivot member 38.
- Pivot member 38 may be a plate pivotally coupled to the stapler head 12 at its proximal end.
- the graspers extend through holes 40 in the pivot member. Once the graspers have engaged pinches of tissue Tl, T2, the pivot member is pivoted away from the window W, carrying the graspers and the acquired tissue and thereby drawing the pinches of tissue through the window.
- the stapler is activated to compress the tissue pinches between the cartridge and anvil, and to drive staples through the compressed tissue (Figs. 91 and 9J).
- an elongate support 42 having a partition 44 extends through a hole 40 in the pivot member 38 such that it extends through the window W.
- the partition is disposed between the pinches.
- Compression of the pinches between the cartridge and anvil sandwiches the partition 44 between the pinches.
- the partition is formed of a flexible material that is less slippery than the surface of the tissue. Its presence during compression will minimize the likelihood that the slippery nature of the tissue will cause one of both of the pinches Tl, T2 to slip or "squirt" out of alignment with the staple holder/anvil before or during compression.
- the partition 44 may be retracted between the steps of tissue compression and tissue stapling by pivoting the pivot member away from the window W as shown in Fig. 9N.
- the partition 44 may be cut or released from its support (prior to or after staple firing), leaving it in place between the tissue pinches.
- staples advanced through the tissue pinches pass through the partition 44, maintaining the position of the partition.
- the partition may be formed of a material that will absorb, degrade, or erode within the body over a period of time.
- Figs. 90 and 9P illustrate another alternative system in which the graspers 26 are used to engage stomach wall tissue, and in which the window of the partitioning tool 10 is slipped over the proximal ends of the graspers (outside the body) and guided into the stomach over the shafts of the graspers.
- an articulating grasper 26a Fig. 9R
- one or both of the graspers 26 may be passed down the channel of an articulating endoscope 50.
- a separately positioned endoscope 50a may be positioned independent of the graspers and retroflexed to allow visualization of the grasping and stapling steps.
- the tissue acquired for stapling can be tissue accessible by the graspers while the stapler head remains in a fixed position, or it can be from distinctly different areas of the organ. This latter technique may require acquiring tissue from one area of an organ or target tissue in one grasper, moving the stapler head to another target area and then acquiring second tissue for stapling from said target area.
- one area of tissue may be from the posterior side of the stomach and it may be anchored to tissue on the anterior side as illustrated in Fig. 1 IA.
- Figs. 1OB - 1OD illustrate that the pinches of tissue forming plications may have a number of different relative orientations.
- Figs. 1OB and 1OC shows that the plications may be formed by attaching pinches P of tissue pulled towards one another such that the apexes of the folds formed by each pinch extend in opposite directions.
- Figs. 1OC - 1OE show that the pinches of tissue may instead be pulled in the same direction such that the apexes of each tissue pinch are more or less aligned with one another.
- Devices using the disclosed principles may be used to form a single plication (Fig. 10A) within the stomach, or the device might be fired multiple times to create a line of plications partitioning the stomach in the desired configuration and location.
- Some of these locations which are identified by letters A - D in Fig. 12, include, but are not limited to horizontal at the GE junction (A) partially across the stomach, vertical along the lesser curvature (B), transverse across the antrum (C) and transverse across the fundus (D).
- Fig. 1 IB shows a partition formed of three plications, where each plication is formed such that the tissue pinch from the anterior wall is positioned under the pinch from the posterior wall, whereas in Fig. 11C the plications are alternated such that in the center plication the pinch from the posterior wall is on top of the pinch from the anterior wall.
- partitions may be formed using plications of the type disclosed above in connection with Fig. 1OC, in which the pinches of tissue forming each plication have a common orientation.
- Figs. 1 IF - 1 IJ show an alternative partitioning method in which the guide tube 48 that receives the partitioning tool 10 (or, alternatively, the shaft 14 itself) is used as a guide for formation of the plications.
- the graspers (not shown) are used to acquire areas of tissue on opposite sides of the guide tube 48, such that when the acquired tissue is drawn through the window, it wraps partially around the guide tube as shown in Figs.1 IG - 1 IH. Compression and stapling are performed as described above to secure the pinches Tl , T2 to one another.
- the stapler head may be repositioned multiple times to form several such plications as shown in Fig. 111.
- the partitioning tool 10 is straightened and withdrawn, leaving the stomach partitioned to form a chute C (Fig. 1 IJ) within the stomach.
- a partition can be reversed utilizing a conventional linear stapler 100 of a type that applies parallel rows of staples while forming a central cut between the staple rows.
- the stapler 100 is inserted through gap in or adjacent to the partition formed by plications P.
- the partition serves to define a narrow exit orifice for flow of food from the proximal stomach to the distal stomach
- the stapler is inserted into the exit orifice and clamped across one or more of the plications (Fig. 13C).
- the stapler is activated and plications are separated by forming cuts C and forming staple lines SL.
- the process is repeated until the entire "partition" or collection of partitions are separated (Fig. 13D), restoring the natural geometry of the stomach (Fig. 13E).
- Plugs or pledgets 102 can be inserted into the gaps between plications to increase the amount of restriction to flow of ingested food provided by the partition.
- each plication can have a pledget/plug inserted into the hole cut into the plication (Fig. 14C) to ensure robust edge to edge healing of tissue; the pledget can be permanent or transitory in nature (e.g. biodegradable/bioerodible).
- the pledget can have a configuration on the top of the pledget which helps separate the newly created portions of the stomach as well, and can be modified to allow more or less food passage through gaps between plications.
- a plug placed in the hole cut into the plication has an overlapping flange 104 that will extend to cover adjacent gaps between the plications.
- Figs. 15A through 15D illustrate that plugs/pledgets within the cut holes may be used to hold two or more two-layer plications together.
- the stapler may be used to separately staple and cut each pinch, forming a plurality of two-layer plications as shown in Fig. 15 A.
- pairs (or larger groups) of the two-layer plications may be joined together to position the cut holes into alignment, and the plugs/pledgets may be inserted through the aligned holes to retain the plications as shown in Fig. 15B.
- Figs. 15A through 15D illustrate that plugs/pledgets within the cut holes may be used to hold two or more two-layer plications together.
- FIG. 16A and 16B illustrate that plugs/pledgets 102 passed through the hole in one or more two- or four-layer plication can function as restrictive devices themselves, and be used to restrict flow of food towards the distal stomach.
- Various types of plugs/anchors are shown in Fig. 17 and Fig. 18.
- plugs/anchors may have fasteners 106 similar to zip ties, or moly-bolt type anchors 108.
- Other plugs/anchors may have inflatable portions 110 to anchor them in place (inflatable using air, liquid, or solids such as granular elements or miniature bearings.
- Still other plugs may have expandable anchors 112a, 112b that are insertable through the cut hole in the plication in a folded or collapsed shape, and that expand when released.
- a locking ring 114 having a catch 116 may be opened into a "c", looped through the cut hole in the plication and then engaged at the catch to form a ring.
- lid designs may be used as shown in Fig. 18. These include the bulbous lid 118 which might also serve as a gastric space occupier, a tapered lid 120 that facilitates shedding of fluid and food material, an off-set lid 122 for restricting a tissue food orifice. Large lids can be used to facilitate sealing of a sectioned stomach.
- the plug is manufactured out of a very compliant material (e.g. silicone, sartoprene, urethane, etc) which maintains alignment of holds but allows for movement of the stomach wall plications relative to one another.
- the tissue graspers can utilize any of a number of means for acquiring tissue including but not limited to vacuum, hooks, cork screws, or combinations of the above.
- the graspers 126 may have a dual action which is helpful in closure of a perforation of a tissue wall, such as the stomach or other organ.
- the graspers have a central "tongue" with graspers on each side. This embodiment allows each side of a perforation to be grasped independently and pulled between the stapler cartridge and anvil to ensure that the perforation is adequately closed. More specifically, the grasper is extended through the window in the stapler head as shown in Fig. 2OB, and positioned with the tongue of the grasper within the perforation.
- the tongue is pivoted towards one jaw of the grasper as shown in Fig. 2OD, to pinch one edge of the perforation between the tongue and that jaw.
- the second jaw is moved towards the tongue to pinch the other edge of the perforation between the tongue and second jaw.
- the grasper is withdrawn, pulling the engaged tissue through the stapler window.
- the stapler is compressed to form a two- layer plication in the tissue with a row of staples SL extending through the plication. See Figs. 2OF and 2OG.
- the cartridge 18a and anvil 16a as positioned on jaw members 200, 202 slidably positioned on a rod 204.
- a grasper 26 is used to draw tissue between the cartridge and anvil, and the cartridge and anvil are closed by advancing the jaw carrying the cartridge along the rod, thereby moving the jaws into the closed position (Fig. 19C) and compressing the tissue (Fig. 19D..
- the tissue is stapled to produce a linear staple line.
- the tissue may additionally be cut by a blade 206 that is driven through the staple head. Hydraulic fluid driven through cable 208 is employed to drive the staples and may also be used to advance blade 206.
- the device would be capable of excising intussusceptions, removing polyps, close perforations (holes) of the stomach or other body tissue, resolution of internal or external hemorrhoids, ulcers, perform tubal ligations, remove cervical lesions, produce pyloric tightening, and perform the removal of organs or tissue outside the GI tract.
- this stapler design may be used to form a plurality of plications Pl which have had the "lips" or apexes of the plications cut off by the stapling element.
- Staple line SL maintains apposition of the plicated tissue.
- the partitioning tools described herein 10 may include a number of features that allow the stapler head 12 to be oriented as needed to ensure that the tissue pinches drawn into the window are properly aligned with one another and with the staple housing and anvil for optimal compression and stapling of the targeted tissue.
- the head 12 may be articulatable in one or more directions using pull cables or other appropriate methods.
- shaft 14 may formable using into a predetermined shape using locking spine technology, to give the shaft an operative end having one or multiple bends, such as bend B 1 and bend B 1.
- Bends B 1 and B2 may be within a single plane, or bend B2 may be within the plane of the straight section of the shaft while bend Bl extends out of the plane shared by B2 and the shaft. Additionally, the head 12 may be rotatable relative to its longitudinal axis by a wrist-type joint coupling the head 12 to the shaft 14. For example, see Fig. 21 A in which the opening to window faces perpendicular to the shaft 14, whereas in Fig. 21 B the window faces the shaft 14. Arrow Al in Figs. 21 C and 21 C represents rotation of the head 12 relative to the shaft 14.
- the shaft may be articulatable at the bends or other locations to allow adjustment of the head orientation, as indicated by arrows A2 (lateral articulation relative to the longitudinal section of shaft 14), arrows A3 (articulation towards/away from the longitudinal section of the shaft 14), and arrows A4 (articulation into/out of the page in a plane shared by the longitudinal section of the shaft, as also shown in Fig. 2 IE.
- Fig. 2 IF shows this same articulation but with the stapler head rotated to a different orientation to give access to a different area of the stomach wall.
- the bends of the shaft remain within a single plane, which is the plane occupied by the longitudinal section of the shaft.
- Fig. 21G illustrates the shaft articulated in directions A2 and A3, but not in direction A4, such that the entire shaft is disposed within the plane of its longitudinal section.
- the staple head may be both articulatable and moveable into a laterally-offset position relative to its shaft.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CA2691269A CA2691269C (en) | 2007-05-12 | 2008-05-12 | Devices and methods for stomach partitioning |
EP08755318.6A EP2157918B1 (en) | 2007-05-12 | 2008-05-12 | Devices for stomach partitioning |
JP2010508523A JP5331104B2 (en) | 2007-05-12 | 2008-05-12 | Apparatus and method for gastric segmentation |
AU2008251300A AU2008251300B2 (en) | 2007-05-12 | 2008-05-12 | Devices and methods for stomach partitioning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US91764407P | 2007-05-12 | 2007-05-12 | |
US60/917,644 | 2007-05-12 |
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WO2008141288A1 true WO2008141288A1 (en) | 2008-11-20 |
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PCT/US2008/063440 WO2008141288A1 (en) | 2007-05-12 | 2008-05-12 | Devices and methods for stomach partitioning |
Country Status (6)
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US (3) | US20080294179A1 (en) |
EP (1) | EP2157918B1 (en) |
JP (1) | JP5331104B2 (en) |
AU (1) | AU2008251300B2 (en) |
CA (1) | CA2691269C (en) |
WO (1) | WO2008141288A1 (en) |
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Also Published As
Publication number | Publication date |
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AU2008251300B2 (en) | 2014-05-29 |
CA2691269A1 (en) | 2008-11-20 |
EP2157918A1 (en) | 2010-03-03 |
US20160262921A1 (en) | 2016-09-15 |
AU2008251300A1 (en) | 2008-11-20 |
EP2157918B1 (en) | 2014-06-11 |
US20130306704A1 (en) | 2013-11-21 |
CA2691269C (en) | 2016-04-12 |
JP2010526644A (en) | 2010-08-05 |
US20080294179A1 (en) | 2008-11-27 |
JP5331104B2 (en) | 2013-10-30 |
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