摘要:
An expandable cannula having a plurality of wall surfaces, the wall surfaces being foldable together one over another such that the cannula assumes a first cross sectional area, and the wall surfaces being unfoldable such that the cannula assumes a second cross sectional area, wherein the first cross sectional area is smaller than the second cross sectional area.
摘要:
An apparatus for manipulating a surgical needle is disclosed, comprising a body portion, a first needle receiving jaw mounted for movement on a distal end of the body portion and having a first needle engaging member, a second needle receiving jaw mounted for movement on the distal end of the body portion and having a second needle engaging member, the second needle engaging member being operatively interconnected to the first needle engaging member for relative reciprocal movement therewith, wherein each of the first and second needle receiving jaws has a recess for receipt of a portion of a surgical needle therein. The first and second needle engaging members are mounted for alternate reciprocal movement into and out of locking engagement with the surgical needle. The apparatus also includes a wheel rotatably mounted within the body portion with a proximal end portion of each of the first and second needle engaging members connected to opposing sides of the wheel such that rotation of the wheel simultaneously retracts one of the needle engaging members and advances the other. Also disclosed is a method of manipulating a surgical needle inside a body cavity using a surgical instrument having a control mechanism, a first jaw and a second jaw, where at least one of the jaws is mounted for movement between a first position adjacent the other jaw and a second position spaced apart from the other jaw.
摘要:
A loading unit is provided for use with a surgical vascular suturing instrument. The loading unit is dimensioned and configured to securely retain a surgical needle and an associated length of suture in a position to be received by a jaw of the vascular suturing instrument. The loading unit generally includes one or more needle supply stations each of which include needle support structure and jaw receiving structure. The needle supporting structure releasably secures a surgical needle to the loading unit and the jaw receiving structure is dimensioned and configured to guide the jaw of a vascular suturing instrument about an end of the surgical needle. The needle supply station also includes a shield to protect the pointed end of the surgical needle during storage and transportation. The loading unit also includes suture retaining structure for holding the length of suture material attached to the surgical needle.
摘要:
The disclosure contemplates a method for using an endoscopic suturing apparatus to conveniently place various knots in suture such as a square knot, a modified fisherman's knot, a securing knot, an alternative square knot and a surgeon's knot. The knots are formed variously by placing the suture between the jaws or around one jaw and passing the needle from one jaw to the other to be able to draw the suture through loops formed in the suture.
摘要:
A pair of pads is held against the remus of a patient's jaw, to prevent the jaw from slipping back and causing an airway obstruction, while the patient's neck is hyperextended to also cause the patient's airway to stay open. A device including the adjustable jaw pads as well as a triangularly shaped portion over which the patient's neck rests is not required to be attached to the surface on which the patient is lying, and permits the patient to be rolled on either side while still maintaining the patency of the patient's airway.
摘要:
A catheter and catheter system may be used to treat disease tissue by gentle heating in combination with gentle or standard dilation. An elongate flexible catheter body with a radially expandable balloon having a plurality of electrodes engage tissue including diseased tissue when the structure expands.
摘要:
A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring.
摘要:
A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring.
摘要:
Methods for determining structural integrity of a bone within the spine of a patient, the bone having a first aspect and a second aspect, wherein the second aspect separated from the first aspect by a width and located adjacent to a spinal nerve. The methods involve (a) applying an electrical stimulus to the first aspect of the bone; (b) electrically monitoring a muscle myotome associated with the spinal nerve to detect if an onset neuro-muscular response occurs in response to the application of the electrical stimulus to the first aspect of the bone; (c) automatically increasing the magnitude of the electrical stimulus to until the onset neuro-muscular response is detected; and (d) communicating to a user via at least one of visual and audible means information representing the magnitude of the electrical stimulus which caused the onset neuro-muscular response.
摘要:
Systems for determining structural integrity of a bone within the spine of a patient, the bone having a first aspect and a second aspect, wherein the second aspect separated from the first aspect by a width and located adjacent to a spinal nerve. A stimulator is configured to generate an electrical stimulus to be applied to the first aspect of the bone. A monitor is configured to electrically monitor a muscle myotome associated with the spinal nerve to detect if an onset neuro-muscular response occurs in response to the application of the electrical stimulus to the first aspect of the bone. An adjuster is configured to automatically increase the magnitude of the electrical stimulus to until the onset neuro-muscular response is detected. Lastly, a communicator is configured to communicate to a user via at least one of visual and audible means information representing the magnitude of the electrical stimulus which caused the onset neuro-muscular response.