US20130306705A1 - Feeder belt for true multi-fire surgical stapler - Google Patents
Feeder belt for true multi-fire surgical stapler Download PDFInfo
- Publication number
- US20130306705A1 US20130306705A1 US13/948,496 US201313948496A US2013306705A1 US 20130306705 A1 US20130306705 A1 US 20130306705A1 US 201313948496 A US201313948496 A US 201313948496A US 2013306705 A1 US2013306705 A1 US 2013306705A1
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- United States
- Prior art keywords
- feeder belt
- gear
- continuous
- flexible rack
- staples
- 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.)
- Abandoned
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Classifications
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- 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
- A61B17/068—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
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
Definitions
- the invention generally relates to surgical staplers and stapling.
- An endocutter is a surgical tool that staples and cuts tissue to transect that tissue while leaving the cut ends hemostatic.
- An endocutter is small enough in diameter for use in minimally invasive surgery, where access to a surgical site is obtained through a trocar, port, or small incision in the body.
- a linear cutter is a larger version of an endocutter, and is used to transect portions of the gastrointestinal tract.
- a typical endocutter receives at its distal end a disposable single-use cartridge with several rows of staples, and includes an anvil opposed to the cartridge. During actuation of an endocutter, the cartridge fires all of the staples that it holds.
- the endocutter In order to deploy more staples, the endocutter must be moved away from the surgical site and removed from the patient, after which the old cartridge is exchanged for a new cartridge. The endocutter is then reinserted into the patient. However, it can be difficult and/or time-consuming to located the surgical site after reinsertion. Further, the process of removing the endocutter from the patient after each use, replacing the cartridge, and then finding the surgical site again is tedious, inconvenient and time-consuming, particularly where a surgical procedure requires multiple uses of the endocutter.
- the Endocutter Application discloses a feeder belt 2 to which a plurality of staples 4 are frangibly attached.
- the feeder belt 2 bends around a pulley 6 at its distal end.
- Each end of the feeder belt 2 is connected to a different rigid, toothed rack 8 , and each rack engages a gear 10 .
- the racks 8 are rigid, and as a result advancement of one rack 8 causes the gear 10 to rotate and thereby move the other rack 8 in the opposite direction.
- the gear 10 is located in a shaft 12 of the tool, between the handle and a distal end of the shaft. Because the racks 8 are rigid, the linear travel of the racks 8 is limited by the length of the shaft 12 and of the handle connected to the shaft. Consequently, the number of firings that can be made by the tool is limited by the linear distance that the racks 8 can travel within the shaft 12 and structure connected to the shaft 12 .
- FIG. 1 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a different rigid rack.
- FIG. 2 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a single flexible rack.
- FIG. 3 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a single flexible rack, where staples extend from the flexible rack.
- FIG. 4 is a top view of an exemplary feeder belt configured to engage a gear.
- FIG. 5 is a side view of an exemplary continuous feeder belt.
- a feeder belt 2 bends around a pulley 6 at its distal end, such that an upper portion 14 of the feeder belt 2 is above and spaced apart from a lower portion 16 of the feeder belt 2 .
- the upper portion 14 and lower portion 16 of the feeder belt 2 may be, but need not be, substantially parallel to one another.
- the upper portion 14 and lower portion 16 of the feeder belt 2 each have a proximal end, and the proximal end of each portion 14 , 16 may be connected to a flexible rack 18 . That is, the feeder belt 2 is connected at each end to a flexible rack 18 .
- the combination of the feeder belt 2 and the flexible rack 18 may be referred to as the belt assembly 20 .
- the belt assembly 20 is continuous, meaning that the belt assembly 20 defines a continuous, unbroken loop.
- the flexible rack 18 may be flexible in any suitable manner.
- the flexible rack 18 may be made from a flexible material with sufficient strength and other material properties to allow it to bend around the gear 10 , and to be attached to and exert tension on the feeder belt 2 .
- the flexible rack 18 may be a chain or other mechanism with individual, small links that are themselves rigid but that are collectively flexible.
- the flexible rack 18 may be fabricated from nickel-titanium alloy or other superelastic material.
- the gear 10 may be located at the proximal end of the continuous belt assembly 20 . In this way, the gear 10 may be utilized to tension the feeder belt 2 between the gear 10 and the pulley 6 at the distal end of the feeder belt 2 . If so, the gear 10 may be located at or near the proximal end of the shaft 12 , which may be held within a handle 24 , or may be located proximal to or outside the shaft 12 inside the handle 24 or other structure attached to the shaft 12 . Further, the initial position of the feeder belt 2 may be as shown in FIG. 2 , where staples 4 extend from the upper portion 14 of the feeder belt 2 along substantially all of the upper portion 14 . In this way, the feeder belt 2 is able to include more staples 4 along its length than the feeder belt 2 of FIG. 1 , such that more staple firings can be made with a single feeder belt 2 .
- the feeder belt 2 may be assembled into an endocutter or other surgical apparatus, and may be actuated by that endocutter or other surgical apparatus, substantially as described in the Endocutter Application.
- the gear 10 may be directly driven by a handle such as described in the Endocutter Application, thereby reducing the number of parts and simplifying the overall assembly relative to that handle.
- staples 4 may be frangibly connected to the flexible rack 18 as well as to the feeder belt 2 .
- the staples 4 may be connected to the flexible rack 18 in substantially the same manner as described in the Endocutter Application. Alternately, the staples 4 may be connected to the flexible rack 18 in any other suitable manner.
- the upper portion 14 of the feeder belt 2 may be spaced apart from the lower portion 16 of the feeder belt 2 a distance sufficient that the staples 4 extending from each portion 14 , 16 do not interfere with or engage one another.
- the staples 4 instead, or also, may be laterally spaced relative to one another, such that in the initial position of the feeder belt 2 , the staples 4 extending from the upper portion 14 of the continuous belt assembly 20 are laterally spaced a first distance from a longitudinal centerline of that continuous belt assembly 20 , and the staples 4 extending from the lower portion 16 of the continuous belt assembly 20 are laterally spaced a second distance from a longitudinal centerline of that continuous belt assembly 20 , where the first distance and the second distance are sufficiently different from one another that the staples 4 extending from different portions 14 , 16 pass by one another without colliding or interfering with one another during actuating of the continuous belt assembly 20 . That is, the continuous belt assembly 20 is arranged in any suitable manner such that the staples 4 along the feeder belt 2 and the flexible rack 18 of the continuous belt assembly 20 do not interfere with one another.
- the feeder belt 2 may be omitted, such that the flexible rack 18 is continuous and holds and deploys all of the staples 4 .
- a feeder belt 2 such as described in the Endocutter Application may include a plurality of apertures 26 defined therein.
- the apertures 26 may be sized, shaped and spaced apart from one another such that they engage teeth on the gear 10 .
- the feeder belt 2 is sufficiently flexible to wrap around and be driven around the pulley 6 , and consequently is sufficiently flexible to wrap around and be driven by or around the gear 10 .
- the rack or racks 8 , 18 may be omitted, and the feeder belt 2 is itself continuous and forms a continuous loop, as shown in FIG. 5 .
- the apertures 26 may be omitted, and the underside of the feeder belt 2 may include teeth similar to one of the racks 8 , 18 configured to engage the gear 10 .
- the apertures 26 may be omitted, and the feeder belt 2 may be held in tension or otherwise manipulated such that the flat feeder belt 2 is capable of being advanced without the use of features on the feeder belt 2 configured to engage a gear, or without the use of a rack 8 , 18 connected to or otherwise engaging the feeder belt 2 .
Abstract
An exemplary surgical apparatus may include a feeder belt configured as a continuous loop; staples fixed to and shearable from the continuous feeder belt; apertures defined in the continuous feeder belt; and a gear positioned at the distal end of the feeder belt within the continuous loop, where the gear engages at least one of the apertures to move the continuous feeder belt around the gear. Another exemplary surgical apparatus may include a feeder belt; a plurality of staples fixed to and shearable from the continuous feeder belt; and a plurality of teeth defined on the continuous feeder belt. Another exemplary surgical apparatus may include a continuous belt assembly that has a flexible rack with two ends, and a feeder belt with two ends, each end of the feeder belt connected to a corresponding end of the flexible rack; and staples fixed to and shearable from the continuous feeder belt.
Description
- This application is a continuation of U.S. patent application No. 13/663,424 (attorney docket no. 355), filed Oct. 29, 2012, which, in turn, is a divisional of U.S. patent application No. 12/770,462 (attorney docket no. 301), filed Apr. 29, 2010, now U.S. Pat. No. 8,317,072, issued Nov. 27, 2012, which, in turn, claims priority to U.S. Provisional Patent Application No. 61/175,027 (attorney docket no. 266), filed May 3, 2009, all of which are herein incorporated by reference in their entirety.
- The invention generally relates to surgical staplers and stapling.
- An endocutter is a surgical tool that staples and cuts tissue to transect that tissue while leaving the cut ends hemostatic. An endocutter is small enough in diameter for use in minimally invasive surgery, where access to a surgical site is obtained through a trocar, port, or small incision in the body. A linear cutter is a larger version of an endocutter, and is used to transect portions of the gastrointestinal tract. A typical endocutter receives at its distal end a disposable single-use cartridge with several rows of staples, and includes an anvil opposed to the cartridge. During actuation of an endocutter, the cartridge fires all of the staples that it holds. In order to deploy more staples, the endocutter must be moved away from the surgical site and removed from the patient, after which the old cartridge is exchanged for a new cartridge. The endocutter is then reinserted into the patient. However, it can be difficult and/or time-consuming to located the surgical site after reinsertion. Further, the process of removing the endocutter from the patient after each use, replacing the cartridge, and then finding the surgical site again is tedious, inconvenient and time-consuming, particularly where a surgical procedure requires multiple uses of the endocutter.
- In order to overcome these difficulties, Cardica, Inc. of Redwood City, Calif. has developed a true multi-fire endocutter that is capable of firing multiple times without the need to utilize single-use-cartridges. That endocutter is described in, for example, U.S. patent application Ser. No. 12/263,171, filed on Oct. 31, 2008 (the “Endocutter Application”), which is hereby incorporated by reference in its entirety. Referring to
FIG. 1 , the Endocutter Application, among other items, discloses afeeder belt 2 to which a plurality ofstaples 4 are frangibly attached. The feeder belt 2 bends around apulley 6 at its distal end. Each end of thefeeder belt 2 is connected to a different rigid,toothed rack 8, and each rack engages agear 10. Theracks 8 are rigid, and as a result advancement of onerack 8 causes thegear 10 to rotate and thereby move theother rack 8 in the opposite direction. Thegear 10 is located in ashaft 12 of the tool, between the handle and a distal end of the shaft. Because theracks 8 are rigid, the linear travel of theracks 8 is limited by the length of theshaft 12 and of the handle connected to the shaft. Consequently, the number of firings that can be made by the tool is limited by the linear distance that theracks 8 can travel within theshaft 12 and structure connected to theshaft 12. -
FIG. 1 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a different rigid rack. -
FIG. 2 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a single flexible rack. -
FIG. 3 is a schematic view of an endocutter utilizing a feeder belt connected at each end to a single flexible rack, where staples extend from the flexible rack. -
FIG. 4 is a top view of an exemplary feeder belt configured to engage a gear. -
FIG. 5 is a side view of an exemplary continuous feeder belt. - The use of the same reference symbols in different figures indicates similar or identical items.
- Continuous Feeder Belt Assembly with Flexible Rack
- Referring to
FIG. 2 , afeeder belt 2 bends around apulley 6 at its distal end, such that anupper portion 14 of thefeeder belt 2 is above and spaced apart from alower portion 16 of thefeeder belt 2. Theupper portion 14 andlower portion 16 of thefeeder belt 2 may be, but need not be, substantially parallel to one another. Theupper portion 14 andlower portion 16 of thefeeder belt 2 each have a proximal end, and the proximal end of eachportion flexible rack 18. That is, thefeeder belt 2 is connected at each end to aflexible rack 18. The combination of thefeeder belt 2 and theflexible rack 18 may be referred to as thebelt assembly 20. Thebelt assembly 20 is continuous, meaning that thebelt assembly 20 defines a continuous, unbroken loop. Theflexible rack 18 may be flexible in any suitable manner. As one example, theflexible rack 18 may be made from a flexible material with sufficient strength and other material properties to allow it to bend around thegear 10, and to be attached to and exert tension on thefeeder belt 2. As another example, theflexible rack 18 may be a chain or other mechanism with individual, small links that are themselves rigid but that are collectively flexible. As another example, theflexible rack 18 may be fabricated from nickel-titanium alloy or other superelastic material. - Where the
flexible rack 18 is utilized, thegear 10 may be located at the proximal end of thecontinuous belt assembly 20. In this way, thegear 10 may be utilized to tension thefeeder belt 2 between thegear 10 and thepulley 6 at the distal end of thefeeder belt 2. If so, thegear 10 may be located at or near the proximal end of theshaft 12, which may be held within ahandle 24, or may be located proximal to or outside theshaft 12 inside thehandle 24 or other structure attached to theshaft 12. Further, the initial position of thefeeder belt 2 may be as shown inFIG. 2 , wherestaples 4 extend from theupper portion 14 of thefeeder belt 2 along substantially all of theupper portion 14. In this way, thefeeder belt 2 is able to includemore staples 4 along its length than thefeeder belt 2 ofFIG. 1 , such that more staple firings can be made with asingle feeder belt 2. - The
feeder belt 2 may be assembled into an endocutter or other surgical apparatus, and may be actuated by that endocutter or other surgical apparatus, substantially as described in the Endocutter Application. Optionally, thegear 10 may be directly driven by a handle such as described in the Endocutter Application, thereby reducing the number of parts and simplifying the overall assembly relative to that handle. - Optionally, referring also to
FIG. 3 ,staples 4 may be frangibly connected to theflexible rack 18 as well as to thefeeder belt 2. Thestaples 4 may be connected to theflexible rack 18 in substantially the same manner as described in the Endocutter Application. Alternately, thestaples 4 may be connected to theflexible rack 18 in any other suitable manner. Wherestaples 4 are carried by theflexible rack 18, theupper portion 14 of thefeeder belt 2 may be spaced apart from thelower portion 16 of the feeder belt 2 a distance sufficient that thestaples 4 extending from eachportion staples 4 instead, or also, may be laterally spaced relative to one another, such that in the initial position of thefeeder belt 2, thestaples 4 extending from theupper portion 14 of thecontinuous belt assembly 20 are laterally spaced a first distance from a longitudinal centerline of thatcontinuous belt assembly 20, and thestaples 4 extending from thelower portion 16 of thecontinuous belt assembly 20 are laterally spaced a second distance from a longitudinal centerline of thatcontinuous belt assembly 20, where the first distance and the second distance are sufficiently different from one another that thestaples 4 extending fromdifferent portions continuous belt assembly 20. That is, thecontinuous belt assembly 20 is arranged in any suitable manner such that thestaples 4 along thefeeder belt 2 and theflexible rack 18 of thecontinuous belt assembly 20 do not interfere with one another. - Alternately, where
staples 4 extend from theflexible rack 18, thefeeder belt 2 may be omitted, such that theflexible rack 18 is continuous and holds and deploys all of thestaples 4. - Rackless Continuous Feeder Belt Assembly
- Referring to
FIG. 4 , afeeder belt 2 such as described in the Endocutter Application may include a plurality ofapertures 26 defined therein. Theapertures 26 may be sized, shaped and spaced apart from one another such that they engage teeth on thegear 10. Thefeeder belt 2 is sufficiently flexible to wrap around and be driven around thepulley 6, and consequently is sufficiently flexible to wrap around and be driven by or around thegear 10. In such an embodiment, the rack orracks feeder belt 2 is itself continuous and forms a continuous loop, as shown inFIG. 5 . Alternately, theapertures 26 may be omitted, and the underside of thefeeder belt 2 may include teeth similar to one of theracks gear 10. Alternately, theapertures 26 may be omitted, and thefeeder belt 2 may be held in tension or otherwise manipulated such that theflat feeder belt 2 is capable of being advanced without the use of features on thefeeder belt 2 configured to engage a gear, or without the use of arack feeder belt 2.
Claims (10)
1. A surgical apparatus, comprising:
a feeder belt configured as a continuous loop;
staples fixed to and shearable from a flexible rack coupled to said continuous feeder belt;
a gear positioned at the distal end of said feeder belt within said continuous loop, wherein said gear engages with at least one tooth of said flexible rack to move said continuous feeder belt around said gear.
2. The surgical apparatus of claim 1 , wherein said gear includes a plurality of teeth.
3. The surgical apparatus of claim 1 , wherein said staples are arranged along substantially an entire length of said flexible rack.
4. A surgical apparatus, comprising:
a feeder belt; and
a plurality of staples fixed to and shearable from a flexible rack coupled to said feeder belt.
5. The surgical apparatus of claim 4 , wherein said feeder belt is a continuous loop.
6. The surgical apparatus of claim 4 , wherein the flexible rack comprises of plurality of teeth.
7. The surgical apparatus of claim 6 , further comprising at least one gear having at least one gear tooth; wherein said at least one gear tooth defined on said gear engages at least one said tooth defined on said rack to drive said feeder belt around said gear.
8. A surgical apparatus, comprising:
a flexible rack configured as a continuous loop;
staples fixed to and shearable from said flexible rack;
a gear positioned at the distal end of said flexible rack within said continuous loop, wherein said gear engages with at least one tooth of said flexible rack to move said flexible rack around said gear.
9. The surgical apparatus of claim 8 , wherein said gear includes a plurality of teeth.
10. The surgical apparatus of claim 8 , wherein said staples are arranged along substantially an entire length of said flexible rack.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/948,496 US20130306705A1 (en) | 2009-05-03 | 2013-07-23 | Feeder belt for true multi-fire surgical stapler |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US17502709P | 2009-05-03 | 2009-05-03 | |
US12/770,462 US8317072B1 (en) | 2009-05-03 | 2010-04-29 | Feeder belt for true multi-fire surgical stapler |
US13/663,424 US8505800B1 (en) | 2009-05-03 | 2012-10-29 | Feeder belt for true multi-fire surgical stapler |
US13/948,496 US20130306705A1 (en) | 2009-05-03 | 2013-07-23 | Feeder belt for true multi-fire surgical stapler |
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Application Number | Title | Priority Date | Filing Date |
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US13/663,424 Continuation US8505800B1 (en) | 2009-05-03 | 2012-10-29 | Feeder belt for true multi-fire surgical stapler |
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US20130306705A1 true US20130306705A1 (en) | 2013-11-21 |
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US12/770,462 Active 2031-01-25 US8317072B1 (en) | 2009-05-03 | 2010-04-29 | Feeder belt for true multi-fire surgical stapler |
US13/663,424 Expired - Fee Related US8505800B1 (en) | 2009-05-03 | 2012-10-29 | Feeder belt for true multi-fire surgical stapler |
US13/948,496 Abandoned US20130306705A1 (en) | 2009-05-03 | 2013-07-23 | Feeder belt for true multi-fire surgical stapler |
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US12/770,462 Active 2031-01-25 US8317072B1 (en) | 2009-05-03 | 2010-04-29 | Feeder belt for true multi-fire surgical stapler |
US13/663,424 Expired - Fee Related US8505800B1 (en) | 2009-05-03 | 2012-10-29 | Feeder belt for true multi-fire surgical stapler |
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US8505800B1 (en) | 2013-08-13 |
US8317072B1 (en) | 2012-11-27 |
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Owner name: AESCULAP AG, GERMANY Free format text: ASSET PURCHASE AGREEMENT;ASSIGNOR:AESDEX, LLC;REEL/FRAME:045870/0567 Effective date: 20180220 Owner name: AESDEX, LLC, PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEXTERA SURGICAL INC.;REEL/FRAME:045870/0478 Effective date: 20180214 |