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WO2018038704A1 - Canule pour instrument chirurgical - Google Patents

Canule pour instrument chirurgical Download PDF

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Publication number
WO2018038704A1
WO2018038704A1 PCT/US2016/048043 US2016048043W WO2018038704A1 WO 2018038704 A1 WO2018038704 A1 WO 2018038704A1 US 2016048043 W US2016048043 W US 2016048043W WO 2018038704 A1 WO2018038704 A1 WO 2018038704A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
flat top
top surface
distal end
optical system
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.)
Ceased
Application number
PCT/US2016/048043
Other languages
English (en)
Inventor
Ather Mirza
Romi Mirza
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.)
A M Surgical Inc
Original Assignee
A M Surgical Inc
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 A M Surgical Inc filed Critical A M Surgical Inc
Priority to PCT/US2016/048043 priority Critical patent/WO2018038704A1/fr
Publication of WO2018038704A1 publication Critical patent/WO2018038704A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/320036—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes adapted for use within the carpal tunnel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00147—Holding or positioning arrangements
    • A61B1/00154—Holding or positioning arrangements using guiding arrangements for insertion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
    • A61B17/3496—Protecting sleeves or inner probes; Retractable tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • A61B17/320783—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions through side-hole, e.g. sliding or rotating cutter inside catheter
    • A61B2017/320791—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions through side-hole, e.g. sliding or rotating cutter inside catheter with cutter extending outside the cutting window

Definitions

  • This application generally relates to medical devices.
  • the application relates to surgical instruments and the use thereof.
  • Endoscopic and arthroscopic surgeries are minimally invasive surgical procedures that are performed through small incisions or natural body openings.
  • An endoscopic or arthroscopic procedure typically involves use of specialized devices and direct- or remote- control manipulation of instruments with indirect observation of the surgical field through an endoscope, arthroscope or similar device.
  • endoscopic and arthroscopic surgery is a minimally invasive surgery with less postoperative pain, early resumption of usual activities and a cosmetically appealing scar. It typically results in shorter hospital stays, or allows outpatient treatment.
  • arthroscopy is applied to introduction of a scope into a joint anywhere in the body.
  • Arthroscopic surgery refers to the process of introducing of the instrument to, and performing an operation at the joint.
  • Endoscopy is applied to introduction of a scope into a body cavity anywhere in the body.
  • Endoscopic surgery refers to the process of introducing the instruments and performing surgery at the operation site.
  • Further nomenclature is designated by the anatomical structure the scope is introduced into, for example if the scope is placed in the stomach it is called Gastroscopy, in the abdomen it is Laprascopy, etc. There are places where no actual cavity exists.
  • surgeons can create a cavity by introducing a slotted cannula to visualize the surroundings without soft tissue obstruction, as in endoscopic carpal tunnel and cubital tunnel.
  • the present application fulfills a need in the art for a disposable cannula attachable to endoscopic and arthroscopic surgical instruments useful in uniportal procedures. Additionally, the present application provides a clear cannula that allows visual observation of all tissues around the cannula, reducing the risk dividing unintended structures.
  • One aspect of the present invention relates to a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross- section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula is circular in cross-section and has a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • Another aspect of the present application relates to an instrument kit for implementing an endoscopic or arthroscopic surgical procedure.
  • the kit comprises the cannula of the present application.
  • Another aspect of the present application relates to a method for performing a uniportal procedure with a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross-section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the method comprising the steps of: a) establishing an entry portal; b) inserting the distal end of the cannula through the entry portal; c) advancing the cannula to create a passage to the target tissue; d) imaging the target tissue with the optical system; e) performing an endoscopic operation at the target tissue; and f) withdrawing the cannula from the entry portal.
  • Another aspect of the present application relates to a method for performing uniportal endoscopic carpal tunnel release with a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross-section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the method comprising the steps of: a) establishing an entry portal proximal or distal of, and proximate to, the transverse carpal ligament; b) inserting the distal end of the cannula through the entry portal; c) advancing the cannula to create a passage to and under the transverse carpal ligament; d) imaging the transverse carpal ligament and tissues surrounding the cannula with the optical system; e) dividing the transverse carpal ligament; and f) withdrawing the cannula from the entry portal.
  • the term "subject" refers to an animal.
  • the animal is a mammal.
  • the mammal is a human.
  • the term "entry portal” refers to a natural opening or incision in the body of a subject that provides access to a target tissue.
  • the term "uniportal" refers to a procedure in which all instruments that enter the body of the subject are introduced through a single, i.e., the same, entry portal.
  • the present application provides a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the surgical instrument may include a surgical handpiece, such as in the carpal tunnel release tool which is described in U.S. Pat. Nos. 4,926,770, 4,963, 147, 5,089,000, 5,306,284, and 7,628,798, each of which are herein incorporated by reference.
  • the use of the present cannula, as attached to a surgical instrument is exemplified in this application for, but not limited to, endoscopic surgical division of a pulley or tunnel.
  • Some other non -limiting uses for the present cannula, as attached to a surgical instrument include, for example, other divisions or partial separation of a tendon or ligament, cutting, dividing, separating or making an incision in connective tissue, muscle, cartilage, membranes, skin, other body tissues or organs or any other use of the device that can be envisioned or carried out by the practitioner.
  • the term "practitioner" refers to one of skill in the art or any other user of the device.
  • the device can be used for a uniportal endoscopic viewing and/or surgical procedure. In other embodiments, the device can be used for an arthroscopic, laparoscopic, or thoracoscopic viewing and/or surgical procedure. As used herein, “laparoscopic” and “thoracoscopic” procedures fall within the scope of “endoscopic” and “arthroscopic” procedures.
  • Endoscopic or arthroscopic surgical procedures that can be performed with a cannula of the present application include, but are not limited to, carpal tunnel release, Guyon's canal (or tunnel) release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertus fibrosus, tendon release, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, release of fascial compartments in the upper or lower extremities, relieving the compression of a nerve by a ligament pulley or tunnel, and releasing the travel of a ligament or tendon through a pulley or tunnel.
  • Procedures that can be performed with a cannula or device of the present application include endoscopic or arthroscopic surgical procedures on the spine, such as discectomy for the treatment of degenerative disc disease, herniated discs, bulging discs, pinched nerves or sciatica. Procedures that can be performed with a cannula or device of the present application also include procedures on cranial and facial tissues, as well as fasciotomy release throughout the body.
  • the cannula or device of the present application can be used for blood vessel, including vein or artery, harvesting throughout the body, for example to provide blood vessel graft material in conjunction with a coronary bypass procedure or for a reconstructive surgical procedure.
  • Procedures that can be performed with a cannula or device of the present application also include endoscopic procedures on the wrist and hand, including the palmar and dorsal sides of the hand. Endoscopic procedures that can be performed with a cannula or device of the present application on the hand also include the digits, including the thumb, index finger, middle finger, ring finger and little (pinky) finger.
  • endoscopic or arthroscopic procedures that can be performed with a device of the present application include, but are not limited to, observation of internal tissues or injuries, cauterization of vessels, harvesting of tissues for ex vivo growth; obtaining biopsies; spinal surgery; endonasal surgery; mucosal resection; removal of parasites, cysts or tumors, and foreign body retrieval.
  • Still other examples of endoscopic or arthroscopic surgery that can be performed with the device include, but are not limited to, procedures on or within bone, in or around joints or the tendons associated with those joints, as well as any tissue, area or cavity of the body of a subject.
  • the present cannula as attached to a surgical instrument, can be used in the head of a subject.
  • exemplary procedures in the head include, but are not limited to, nasal surgery, endoscopic sinus surgery, endoscopic pituitary surgery, cranial surgery, endoscopic ear surgery, throat surgery, endodontic surgery and tonsils.
  • the present cannula as attached to a surgical instrument, can be used in the neck of a subject.
  • exemplary procedures in the neck include, but are not limited to, laryngoscopic surgery, vocal cord surgery, esophageal surgery, thyroid surgery, carotid artery surgery, and brachial plexus surgery.
  • the present cannula as attached to a surgical instrument, can be used in the chest of a subject.
  • Exemplary procedures in the chest include, but are not limited to, endoscopic mediastinal surgery, thoracic surgery, heart surgery, esophageal surgery, and upper gastrointestinal (GI) scoping.
  • GI gastrointestinal
  • the present cannula as attached to a surgical instrument, can be used in a procedure of a finger, hand, foot of a subject.
  • the present cannula as attached to a surgical instrument, can be used in the abdomen of a subject.
  • Exemplary procedures in the abdomen include, but are not limited to, diagnostic laparoscopy, laparoscopic gastric surgery, laparoscopic liver surgery, laparoscopic pancreatic surgery, laparoscopic nephrectomy and kidney surgery, laparoscopic intestinal surgery, laparoscopic oophorectomy, laparoscopic hysterectomy, laparoscopic urinary bladder surgery, laparoscopic prostate surgery, laparoscopic aortic surgery, laparoscopic appendectomy, laparoscopic colon surgery, endoscopic
  • the present cannula as attached to a surgical instrument, can be used in an upper extremity of a subject.
  • exemplary procedures in an upper extremity include, but are not limited to, ECTR, ECUTR, endoscopic pronator teres release, forearm fascial compartment release, endoscopic repair of biceps tendon, endoscopic release of lateral and medial epicondylitis, endoscopic release of radial tunnel syndrome, endoscopic surgery of the brachial plexus, endoscopic harvesting of nerve graft, arthroscopy and surgery of wrist, arthroscopy of elbow, arthroscopy and surgery of the carpometacarpal (CMC) joint, arthroscopy and surgery of shoulder, arthroscopy and surgery of acromioclavicular (AC) joint.
  • CMC carpometacarpal
  • the present cannula as attached to a surgical instrument, can be used in a lower extremity of a subject.
  • exemplary procedures in an lower extremity include, but are not limited to, femoral artery surgery, fascia lata release, knee lateral release, endoscopic peroneal nerve release, endoscopic leg fascial compartment release, endoscopic release of gastrocnemius, endoscopic tarsal tunnel release, endoscopic release of Morton's neuroma, endoscopic release of the plantar fascia, arthroscopy of hip, knee and ankle, subtalar joint, and endoscopic harvesting of nerve and tendon graft.
  • Endoscopic or arthroscopic surgical procedures that can be performed with a cannula of the present application, such as, but not limited to, a ligament or fascia release procedure, can be performed by approaching the target tissue through an incision or body opening on either the proximate or distal side of the target tissue.
  • a cannula of the present application can be used for plastic surgery.
  • a cannula of the present application is useful for tissue remodeling or the excision of tissue segments, including necrotic tissue.
  • One aspect of the present invention relates to a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross- section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the cannula is made from a clear material.
  • the clear material is polycarbonate.
  • the cannula is marked with gradations showing how far the cannula had been inserted through an entry portal.
  • the hollow central lumen has a length dimension that ranges from 3 to 15 centimeters.
  • the width dimension of said flat top surface ranges from 0.1 to 1.5 centimeters.
  • the distal end of the cannula is turned upwards like an obturator.
  • the cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula is circular in cross-section and has a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the cannula is made from a clear material.
  • the clear material is polycarbonate.
  • the cannula is marked with gradations showing how far the cannula had been inserted through an entry portal.
  • the hollow central lumen has a length dimension which ranges from 3 to 15 centimeters.
  • the width dimension of said flat top surface ranges from 0.1 to 1.5 centimeters.
  • the distal end of the cannula is turned upwards like an obturator.
  • the cannula is removably attached to a handle capable of storing a variety of surgical or exploratory tools and selectably deploying each of those tools individually into the cannula in concert with, or attached to, a viewing device.
  • the handle comprises a rotary switch for the selection of individual tools, or for advancing the viewing device into the cannula without a tool.
  • the surgical or exploratory tools are selected from the group consisting of cutting blades, scrapers, rasps, biopsy loops and/or punches, cauteries, probes, lights and combinations thereof.
  • the handle further comprises an inner sleeve that encircles the path of the viewing device. The inner sleeve works in concert with the rotary switch and comprises notches for the storage of each individual tool.
  • An exemplary handle may be cylindrical, rectangular, oval or elliptical in cross- section and comprised of two halves.
  • the proximal end of the cannula is adapted to engage with a connection point on the front end of the handle.
  • the proximal end of the cannula comprises depressions that engage with tabs (or pins) at the connection point on the front end of the handle.
  • depression is understood to include, but is not limited to, depressions that do not penetrate completely through the material of the cannula, as well as holes or slots that penetrate completely through the material of the cannula.
  • the handle further includes an opening that can be located in either half of the handle.
  • the opening may span the junction between the halves of the handle, being located partially in each half.
  • the opening is located adjacent to an internal revolver that comprises a selector switch that protrudes through the opening.
  • the handle further comprises an inner sleeve that encircles a guidance tube or tube assembly.
  • the handle further comprises a slide lock.
  • the slide lock comprises notches and a tub separating the notches at its distal end that provide pre-deployment resting places for surgical or exploratory tools.
  • the slide lock works in concert with the revolver in order to bring a surgical or exploratory tools, such as a blade or scraper, into the proper orientation for deployment into the cannula.
  • the tube assembly provides a path for deploying an viewing device through the device and into the cannula.
  • the tube assembly also provides, at its distal end, a mounting point or tube locator that the surgical or exploratory tool is rotated onto for deployment.
  • the tube assembly passes through a stabilizer ring, which mounts into, and seals, the proximate end of the handle.
  • the tube assembly is advanced along the deployed viewing device into the cannula, thereby deploying the surgical or exploratory tool into the cannula.
  • the surgical or exploratory tool such as a blade, comprises a base that allows the tool to be secure in its pre-deployment notch of the slide lock.
  • the notch in the base engages a mounting point on the distal end of a guidance tube or directly on the viewing device.
  • the tool may further comprise a ridge that fills the slot side-to- side. Additionally, the engagement of the notch with the mounting point allows the tool to be safely retracted back into the handle following usage of the tool for a surgical or exploratory procedure.
  • the inner sleeve extends into the revolver and the pre-deployment slots holding the surgical or exploratory tools are located inside the revolver.
  • springs are attached to pins located on the revolver.
  • the springs extend to pins that secure the opposite end of the springs to the inner sleeve.
  • the springs auto center the revolver within the handle. Upon rotation of the revolver, the springs activate detents for either deployment of the viewing device alone or orientation of a surgical or exploratory tool in deployment
  • the surgical or exploratory tools are parked in notches in the inner sleeve and are retained there when not deployed by a rotary clip.
  • the handle may further incorporate a tube assembly that passes through the inner sleeve within the handle. The distal end of the tube assembly extends and is deployable into the cannula.
  • the tube assembly comprises near its distal end a tube locator that the surgical or exploratory tool is engaged with for deployment into the cannula.
  • the tube assembly may further comprise, at its proximate end, a tube stop that prevents the proximate end of the tube assembly from passing through the rear of the handle.
  • the tube assembly has a longitudinal central lumen that accommodates the insertion of a viewing device through the tube assembly and into the cannula in order to visualize the tissue surrounding said cannula and to observe the surgical procedure performed with the surgical instrument.
  • the proximal end of the tube assembly is gripped by the practitioner or engaged to a grippable attachment to allow the tube assembly to be operated manually for advancement or withdrawal of the tube assembly through the handle and cannula.
  • the proximal end of the tube assembly is engaged to an apparatus or machine for automatic or remote control of advancement or withdrawal of the tube assembly.
  • the cannula is laterally expandable, allowing for improved stretching or separation of tissues surrounding the cannula.
  • the cannula may further comprise one or more wings, flanges or tabs mounted at or proximal to the proximate end of the cannula.
  • Wings, flanges or tabs may be useful for manual manipulation of the cannula addition to, or in lieu of, a handle.
  • the wings, flanges or tabs may be useful for mounting an additional surgical instrument for a procedure or for mounting the cannula to an immobilizing platform, for example for additional stability of the surgical instrument during a procedure in need thereof.
  • Another aspect of the present application relates to a method for performing a uniportal procedure with a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross-section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the method comprising the steps of: a) establishing an entry portal; b) inserting the distal end of the cannula through the entry portal; c) advancing the cannula to create a passage to the target tissue; d) imaging the target tissue with the optical system; e) performing an endoscopic operation at the target tissue; and f) withdrawing the cannula from the entry portal.
  • the cannula can be used on any target tissue, bone, joint or target area of the body of a subject.
  • the procedure is a surgical operation comprising the steps of contacting the target tissue with a blade and dividing the target tissue with the blade.
  • the surgical operation is carpal tunnel release and the target tissue is the transverse carpal ligament.
  • the surgical operation is trigger finger release and the target tissue is the Al pulley.
  • the surgical operation is fascia release.
  • Another aspect of the present application relates to a method for performing uniportal endoscopic carpal tunnel release with a cannula for a surgical instrument used for cutting selected tissue in a body cavity while under visual inspection.
  • the cannula comprises a hollow central lumen extending from its proximal end to its distal end; the proximal end being open and connectable to a surgical handpiece, allowing passage of an optical system and a cutting tool extension system into said hollow central lumen; and said distal end being closed.
  • the cannula has a flat top surface with a lateral slot in the proximity of said distal end through which a cutting blade can be extended and retracted under operation of the cutting tool extension system while visualizing tissue at said lateral slot with said optical system.
  • the flat top surface has a width dimension spanning a distance from a first side to a second side of said flat top surface.
  • the cannula further has a contiguous lower surface having the lateral sides thereof connected to said first side and said second side of said flat top surface, said lower surface being sized to permit a passage of an optical system and a cutting tool extension system between said flat top surface and said lower surface, said lower surface being circular in cross-section, wherein the lateral sides of said lower surface are curved such that they have a maximum width between the lateral sides that is greater than said width dimension of said flat top surface.
  • the method comprising the steps of: a) establishing an entry portal proximal or distal of, and proximate to, the transverse carpal ligament; b) inserting the distal end of the cannula through the entry portal; c) advancing the cannula to create a passage to and under the transverse carpal ligament; d) imaging the transverse carpal ligament and tissues surrounding the cannula with the optical system; e) dividing the transverse carpal ligament; and f) withdrawing the cannula from the entry portal.
  • kits for implementing an endoscopic or arthroscopic surgical procedure.
  • the kit comprises the cannula of the present application.
  • the instrument kit comprises a surgical handpiece attachable to the proximal end of the cannula.
  • the instrument kit comprises additional components and implements useful for endoscopic or arthroscopic procedures.
  • the instrument kit further includes a scalpel.
  • the instrument kit further includes at least one retractor for holding open an entry portal.
  • Another aspect of the present application relates to a method for uniportal endoscopic or arthroscopic surgery using the present cannula, as attached to a surgical instrument.
  • Uniportal endoscopic or arthroscopic surgery allows the practitioner to visualize a target tissue and its surrounding tissues as well as perform a surgical procedure through a single entry portal.
  • the entry portal may be a natural opening, while in other instances the entry portal is an incision.
  • an incision generally only a single small incision must be made.
  • the incision is less than or equal to about 2 cm in length. In more particular embodiments, the incision is less than or equal to about 1.5 cm in length.
  • the incision is less than or equal to about 1 cm in length.
  • the single small incision allows the patient to recover more quickly and begin therapy and/or resume normal activity as tolerated sooner.
  • the procedure can be a uniportal percutaneous endoscopic surgical procedure.
  • the uniportal endoscopic surgical procedure described herein can be used to implement a number of different surgical procedures including, but not limited to, carpal tunnel release, Guyon's canal release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertus fibrosus, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, release of fascial compartments in the upper or lower extremities, relieving the compression of a nerve by a ligament pulley or tunnel, releasing the travel of a ligament through a ligament pulley or tunnel, surgical procedures on the spine, such as endoscopic discectomy for the treatment of degenerative disc disease, herniated discs, bulging discs, pinched nerves or sciatica, endoscopic procedures on cranial and
  • One embodiment of the present application relates to a method for a performing a uniportal endoscopic or arthroscopic surgical procedure a target tissue in a subject.
  • the surgical procedure requires the establishment of an entry portal.
  • the entry portal is established to the proximate side of the target tissue.
  • the entry portal is established to the distal side of the target tissue.
  • the establishing an entry portal comprises making an incision.
  • the distal end of the cannula is inserted through the portal to establish an opening in the underlying tissue between the portal and the target tissue.
  • the distal end of the cannula comprises a front edge for separating tissues.
  • the optical system is advanced from the surgical handpiece through the open proximal end of the cannula and into the hollow central lumen of the cannula to view the target tissue and the surrounding tissues, assuring that the slot of the cannula is in proper orientation to the target tissue.
  • the optical system is an endoscope or arthroscope.
  • the surgical procedure is carpal tunnel release.
  • the target tissue is the transverse carpal ligament.
  • the surgical procedure is trigger finger release.
  • the target tissue is the Al pulley.
  • TCL transverse carpal ligament
  • the distal end of the cannula as attached to a surgical instrument, is inserted into entry portal and the front edge of the cannula is introduced into the incision and used to create a plane under the carpal transverse ligament, but superficial to the median nerve, with the slot of the cannula facing the TCL.
  • the procedure is observed with the optical system.
  • the optical system is moved/rotated within the cannula to observe and image the target tissue and surrounding tissues.
  • the optical system is used to visualize the TCL.
  • the slot of the cannula is aligned facing the TCL and positioned so that the blade, when extended from the slot, contacts the far margin of the TCL, i.e., the distal margin of the TCL when the entry portal was made proximal to the TCL, or the proximal margin of the TCL when the entry portal was made distal to the TCL.
  • the blade is then extended through the slot and cutting edge of the blade is moved into contact with the far margin of the TCL and the TCL is divided by withdrawing the cannula towards the entry portal, thereby drawing the cutting edge of the blade through the TCL.
  • the blade is retracted back into the cannula when the near margin of the TCL has been reached and severed.
  • the cannula is then moved back towards the far margin of the TCL and the optical system is used to visualize the cut edges of the TCL. If strands of the TCL remain uncut, the blade can then be extended out from the slot again to sever those strands.
  • the cannula is withdrawn and removed from the entry portal.
  • the cannula is detached from the surgical instrument and properly discarded as medical waste.
  • the wound is closed and a soft bandage is applied.
  • a splint is also applied to immobilize the wrist up to a week.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Orthopedic Medicine & Surgery (AREA)
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  • Surgical Instruments (AREA)

Abstract

La présente invention concerne une canule pour un instrument chirurgical utilisé pour couper un tissu sélectionné dans une cavité corporelle pendant qu'il est soumis à une inspection visuelle. L'invention concerne également un kit contenant la canule et des procédés de réalisation de procédures chirurgicales à l'aide de la canule.
PCT/US2016/048043 2016-08-22 2016-08-22 Canule pour instrument chirurgical Ceased WO2018038704A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2016/048043 WO2018038704A1 (fr) 2016-08-22 2016-08-22 Canule pour instrument chirurgical

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/048043 WO2018038704A1 (fr) 2016-08-22 2016-08-22 Canule pour instrument chirurgical

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WO2018038704A1 true WO2018038704A1 (fr) 2018-03-01

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100228275A1 (en) * 2009-02-23 2010-09-09 Kenneth Welborn Probe for carpal tunnel release tool or tissue dissection
US20140066709A1 (en) * 2012-09-04 2014-03-06 A.M. Surgical, Inc. Compact endoscopic surgical blade assembly and method of use thereof
US20140371526A1 (en) * 2009-03-09 2014-12-18 A.M. Surgical, Inc. Slotted clear cannula

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100228275A1 (en) * 2009-02-23 2010-09-09 Kenneth Welborn Probe for carpal tunnel release tool or tissue dissection
US20140371526A1 (en) * 2009-03-09 2014-12-18 A.M. Surgical, Inc. Slotted clear cannula
US20140066709A1 (en) * 2012-09-04 2014-03-06 A.M. Surgical, Inc. Compact endoscopic surgical blade assembly and method of use thereof

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