87results about "Blunt dissectors" patented technology

A surgical system for preparing the sacroiliac (SI) joint for a fusion, comprising a sliding joint finder and a working cannula. The working cannula comprises a body having a central axis that runs the length of the body. The body of the working cannula comprises a distal end, a proximal end and a central cavity that is positioned along the central axis of the working cannula and has suitable dimensions for sliding the working cannula over the sliding joint finder and the working cannula further comprises two protrusions extending proximally. In addition, the two protrusions have uneven lengths such that when the working cannula is inserted, the longer of the two protrusions engages the SI joint at a superior end of the SI joint and the shorter of the two protrusions engages the SI joint at an inferior end of the SI joint.

The LNTPI is a surgical instrument used to cut through fibrotic and edematous tissue to define the natural tissue plane of dissection. After defining the natural tissue plane, it is designed to move or carefully insinuate tissues along these natural planes without cutting the tissue, so that targeted organs or parts thereof could be viewed and reached during laparoscopic procedures. The following features make the LNTPI unique compared to standard blunt dissectors used in laparoscopy: 1. The tip of the LNTPI is coarse and not smooth. The tip has diagonal, spiral ridges from the sides which are carried onto the tip converging as a single spiral at the center of the tip, creating a pattern resembling that of a screw; 2. The ridges of the LNTPI are comprised of asymmetrical triangular ridges with an acute angle at the apex that may be leaning along with or against the rotation of the spiral; 3. The tip of the LNTPI is made of tungsten carbide metal instead of stainless steel; 4. Dissection can be done in the usual up, down, left, and right motions as standard dissectors; 5. The side of the LNTPI can be used to "peel" tissue by using the ridges on its side combined with a twisting movement. This maneuver cannot be performed using standard dissectors; and 6. The tip of the LNTPI can perform circumferential dissection when used with a twisting movement causing it to engage tissue like a "drill" along the natural tissue plane. The ridges that converge into a single spiral at the tip of the invention appear like a screw and with the proper twisting movement have a similar effect on tissue. Because of the texture, design, and material used for the tip of the LNTPI, it has the following advantages over standard dissectors: The LNTPI can engage tissues more easily even if the tissues are slippery due to the presence of blood or fluids. The LNTPI can be used to engage tissues through a twisting motion which motion allows the tissues to be engaged in a specific manner that defines natural tissue dissection planes. The LNTPI can insinuate / "peel" tissue by using the side spiral ridges in combination with a twisting movement. The LNTPI can perform circumferential dissection by using the tip and the convergence of the spiral ridges at the center of the tip in combination with a twisting movement. The transfer of lateral shear force to the tissue at various angles (45, 90, and 180 degrees) when using the LNTPI is significantly higher whether the motion is by a sweeping motion or twisting of the instrument, allowing it to insinuate better than standard instruments, especially in a wet field. Hand movements needed in insinuating tissue using the LNTPI are different from the usual hand movements when using standard dissection instruments. The hand movements in using LNTPI require less muscular effort and repetitiveness, thus preventing muscle fatigue and repetitive use injury among surgeons. The instrument is reusable, as compared to dissectors that have fabric at the tip, which must be disposed of and replaced once the fabric tip fully absorbs the blood or other fluid in the wet tissue surface.

A surgical instrument, and a guide assembly and a disassembling tool therefor. The guide assembly comprises a body member and a movable limiting member, wherein the body member comprises a joint portion and a guide portion; and the movable limiting member comprises a sliding clamping portion, and is configured to switch the joint portion and the tail end of an actuator assembly between a separation state and a joint state. An operator can meet surgical requirements by using only one surgical instrument provided with the guide assembly, without having to activate another instrument, which is conducive to a reduction in medical costs and expenses. When subjected to an acting force in a joint direction, the movable limiting member generates inflexible deformation in a case where same abuts against a sliding guide portion, and releases the inflexible deformation in a case where same slides to a joint position, so as to be clamped to a clamping structure of the actuator assembly; and the joint portion can be clamped to the tail end of the actuator assembly in a sliding elastic manner, that is, one-step clamping can be realized, such that the clamping efficiency of the joint portion and the tail end of the actuator assembly is high, and the operation is simple and convenient.

Disclosed are a surgical tunneler, kits comprising the surgical tunneler, and methods of use thereof, for implanting access lines. The surgical tunneler includes an actuator configured to facilitate selective shifting between a distal tunneling configuration, wherein the distal body portion is fully covered with a cover, and a lateral tunneling configuration, wherein the distal body portion is at least partially uncovered. The surgical tunneler has a functional length configured to facilitate lateral tunneling under normal manual force when applied to the surgical tunneler proximally to the proximal body portion in the lateral tunneling configuration.

A surgical stapling device includes a drive assembly and a tool assembly having an anvil and a cartridge assembly that is pivotably coupled to the anvil for movement between an open position and a clamped position. The cartridge assembly includes a staple cartridge and a channel member that defines a cavity that receives the staple cartridge. The channel member includes a channel lock that is positioned on a proximal portion of the channel member. The drive assembly is movable between a drive advanced position and a drive retracted position and engages the channel lock in the drive retracted position to retain the tool assembly in the open position.

Disclosed is an instrument assembly for a selected procedure. The procedure may include a dissection and neural monitoring. The instrument may be insulated to allow for a selected and precise electrical conductive path.

The invention relates to a sliding bag coiler which comprises a machine body and a sliding bag coiling device, a grip is formed on the machine body, the sliding bag coiling device comprises a sliding bag coiling shaft, a manual operation piece and a transmission mechanism which are rotationally arranged on the machine body, and a coiling main shaft of the sliding bag coiling shaft extends out of the machine body; a plurality of grabbing teeth distributed in the circumferential direction are arranged on the circumferential face of a sliding bag grabbing shaft section of the front section of the winding main shaft, the driving end of the sliding bag winding shaft is connected with the transmission mechanism, the manual operation piece drives the sliding bag winding shaft to rotate through the transmission mechanism, and a damping element is arranged between the sliding bag winding shaft and the machine body. The damping element provides a retarding force when the slide bag take-up shaft rotates. Most of the sliding sacs in the area can be taken out in a one-time and controllable mode, and the sliding sacs in different areas under the acromion can be easily, conveniently and effectively cleaned by an operator.

A medical device includes a handle (102), a shaft (104), an injection device (108, 208) coupled to or a part of a distal end of the shaft, and a valve (230) at the distal portion of the shaft. The handle includes a first fluid port and a second fluid port. The shaft includes a first lumen (236) fluidly coupled to the first fluid port and a second lumen (238) fluidly coupled to the second fluid port. The injection device includes an injection lumen. The valve is controllable to (1) fluidly couple the first lumen to the injection lumen, and block the second lumen from being fluidly coupled to the injection lumen; (2) fluidly couple the second lumen to the injection lumen, and block the first lumen from being fluidly coupled to the injection lumen; and (3) block both the first lumen and the second lumen from being fluidly coupled to the injection lumen.

The present invention relates to a tissue retraction delivery system (1910), including a tissue retraction device (1922) positioned within a delivery catheter (1926), a support catheter (1970) with a distal end (1974), and a pull-back member (1972) extending within a lumen (1977) of the support catheter (1970), wherein the tissue retraction device (1922) includes a tissue engagement member (1952), wherein the tissue engagement member (1952) comprises jaws and an actuation portion (1953), wherein the support catheter (1970) and / or the pull-back member (1972) are configured to be manipulated such that pulling the actuation portion (1953) against the distal end (1974) of the support catheter (1970) shifts the jaws of the tissue engagement member (1922) from a closed position to an open position.

In some examples, a tool for, e.g., creating a sub-sternal tunnel in a patient or other use, is described. The tool may include a handle and a tunneling shaft coupled to the handle. The tunneling shaft extends from a proximal end to a distal end, and at least a portion of the tunneling shaft extends in a curved orientation between the first end to the distal end. The distal end of the tunneling shaft includes a cutting tool having a sharp edge. The cutting tool is moveable from a recessed position in which the sharp edge of the cutting tool is recessed into the distal end of the tunneling shaft to a deployed position in which the sharp edge of the cutting tool extends beyond the distal end of the tunneling shaft in the deployed position, e.g., to cut pericardium, scar tissue, and / or connective tissue with the sharp edge.

An aortic fenestration device having an outer sheath; a suction head being operably coupled to a distal end of the outer sheath and having a suction aperture; a fenestration element disposed within the outer sheath and extendable through the suction head to a position beyond the suction aperture to fenestrate tissue; a guidewire slidably disposed relative to the fenestration element and extendable to a position beyond the suction aperture and a distal end of the fenestration element; and a suction source operably coupled to the outer sheath and configured to exert suction pressure at the suction aperture of the suction head to selectively couple the suction head to the tissue via suction pressure as the tissue is fenestrated. The fenestration element can comprise a needle-wire and needle-wire catheter or a hollow needle.

Some embodiments provide a soft tissue device, such as a transverse carpal ligament cutting device having one or more balloons that are deflated when the device is in an inactive position and are inflated when the device is in an active position. Other embodiments provide a soft tissue cutting method, such as a method of cutting a transverse carpal ligament that uses a soft tissue cutting device.

In some examples, a tool for, e.g., creating a sub-sternal tunnel in a patient or other use, is described. The tool may include a handle and a tunneling shaft coupled to the handle. The tunneling shaft extends from a proximal end to a distal end, and at least a portion of the tunneling shaft extends in a curved orientation between the first end to the distal end. The distal end of the tunneling shaft includes a cutting tool having a sharp edge. The cutting tool is moveable from a recessed position in which the sharp edge of the cutting tool is recessed into the distal end of the tunneling shaft to a deployed position in which the sharp edge of the cutting tool extends beyond the distal end of the tunneling shaft in the deployed position, e.g., to cut pericardium, scar tissue, and / or connective tissue with the sharp edge.

A method for retracting a capsule of a joint includes forming a cut in the capsule to create a plurality of separated portions of the capsule. A first end of a first length of suture is passed through a first separated portion of the capsule and moved out of the joint. A first end of a second length of suture is passed through a second separated portion of the capsule and moved out of the joint. The first end and a second end of the first length of suture are pulled to retract the first separated portion of the capsule. The first end and a second end of the second length of suture are pulled to retract the second separated portion of the capsule. An arthroscopic procedure is performed in the joint, and the first length of suture and / or the second length of suture is used to close the capsule.

Devices, systems and methods for treating diseases and disorders effecting the cardiovascular system of the human body are disclosed. An exemplary device in accordance with this disclosure comprises a shaft, tip member fixed to the shaft, and a probe extending beyond a distal surface of the tip member. In some useful embodiments, the tip member is relatively atraumatic and the probe is shaped so as to be more likely to produce trauma than the tip member.

A method of separating tissue masses includes inserting a portion of a tissue separation assembly between tissue masses inside a living body, by placing an inflatable bladder of the tissue separation assembly into an interface between the tissue masses with a tube fluidly coupled to the inflatable bladder. The tissue separation assembly includes a support extending away from the tube along one side of the inflatable bladder. The method also includes imaging a portion of the body to generate a visual representation that shows the support as visually distinguishable from the inflatable bladder. The method also includes adjusting an orientation of the inserted tissue separation assembly, based on the visual representation, to position the inflatable bladder. The method also includes inflating the inflatable bladder to separate the tissue masses, and then withdrawing the tube and support from the living body, leaving the inflatable bladder in place.

Embodiments include coupling mechanisms (e.g., bodies, attachments) that couple differently shaped and / or sized endoscopic system portions (e.g., cable, housing) to cutting systems configured to cut tissue (e.g., carpal tunnel release devices).

Disclosed are a separation member for a surgical instrument and a surgical instrument. The separation member for a surgical instrument, comprising a mounting portion (220) and a working portion (230), the mounting portion (220) is connected to the working portion (230), the mounting portion (220) comprises a clipping portion (240), the working portion (230) is configured to strip a tissue, the clipping portion (240) is in elastically-mated connection with or detached from a surgical instrument (100), so that the mounting portion (220) is able to be detachably connected to the surgical instrument (100). Therefore, the mounting portion (220) of the separation member (200) is detachably connected to the surgical instrument (100) through insertion and clipping, thereby achieving reliable mounting and convenient dismounting.

Medical systems, devices and methods for creation of autologous tissue valves within a mammalian body are disclosed. One example of a device for creating a valve flap from a vessel wall includes an elongate tubular structure having a proximal portion and a distal portion and a longitudinal axis; a first lumen having a first exit port located on the distal portion of the elongate tubular structure; a second lumen having a second exit port located on the distal portion of the elongate tubular structure; a recessed distal surface on the distal portion of the elongate tubular structure, wherein the recessed distal surface is located distally to the first exit port; and an open trough on the recessed distal surface extending longitudinally from the first exit port.

A medical device includes a shaft including a central lumen configured to direct a flow of fluid through the shaft, and an electrode positioned at a distal portion of the shaft. The electrode includes an electrode lumen in fluid communication with the central lumen, and the electrode lumen is configured to receive the flow of fluid from the central lumen. The electrode also includes one or more channels angled relative to the electrode lumen, and the one or more channels are in fluid communication with the electrode lumen to receive the flow of fluid from the electrode lumen. The one or more channels are configured to divert the flow of fluid from the electrode lumen toward one or more outlets laterally offset from the electrode lumen.

A medical device includes a handle, a shaft, an electrode, and at least one inflatable balloon. The handle includes an electrical connection and a balloon fluid port. The shaft extends from a distal portion of the handle. The electrode is positioned at a distal end of the shaft. The electrode is electrically connected to the electrical connection via one or more conductive elements extending through the handle and the shaft. The at least one inflatable balloon is positioned on a portion of shaft. The at least one inflatable balloon is fluidly coupled to the balloon fluid port via one or more tubes extending through the handle and the shaft.

Systems and methods for augmenting a vertebral body. An introducer device includes a shaft having a flexible distal portion with a pre-set curve in an unconstrained state. An input provided to an actuator to tension a pulling element to move the pre-set curve to a constrained state in which the distal portion and a flexible sheath conforming to the shaft at least partially straighten. The introducer device is removable from the sheath remaining offset from a longitudinal axis. A spacer hub facilitates proximal movement of the sheath relative to an access cannula expose a balloon through a syringe-style input. A hub of the access cannula may be adjustable to selectively adjust an interference surface relative to a datum. At least two radiopaque markers may be disposed on the sheath with relative positions between the markers viewable on lateral and A-P radiography to determine the location and / or curvature of the sheath.

A tissue-separating device, system, and method utilizing an expandable member which expands against tissue to be separated at a treatment site. The expandable member has an invertible portion extendable within and evertible out of a lumen of a tubular elongate member. An anchoring portion of the expandable member is anchored with respect to an exterior of the tubular elongate member to anchor the device with respect to the treatment site so that expansion of the expandable member against tissue does not cause rebound of the expandable member. The tubular elongate member may include one or more radially extending flow holes to inflate the anchoring portion prior to everting and expanding the invertible portion of the expandable member. A tether may be used to assist advancement and retraction of the invertible portion of the expandable member. The tether may define a lumen through which an additional device may be extended.

A tissue retractor, comprising a sheet of shape memory material having a perimeter, and a plurality of anchors disposed about the perimeter configured to engage tissue, wherein the sheet is movable between a rolled configuration and a substantially planar configuration.

This document describes a catheter system for creating an opening in a pericardium. The catheter system includes a sheath defining a sheath lumen that includes a distal opening and a catheter sized to slidably fit within the sheath lumen so that the catheter extends through an entire length of the sheath lumen with a distal portion of the catheter extending beyond the distal opening of the sheath lumen and into a space underneath a pericardium of a patient. Additionally, the catheter system includes a blade movably mounted to the distal portion of the catheter to move from a retracted position to an actuated position. The blade remains fully within an outer housing of the catheter when the blade is in the retracted position. The blade extends outward from the catheter when the blade is in the actuated position so that the blade cuts the pericardium as the catheter withdraws.

A deployment tab (110) for deploying a neural interface device (106), the deployment tab comprising: a first portion configured to be positioned, in use, proximally of the neural interface device; and a connector for releasably coupling the first portion to the neural interface device, the connector being anchored to the first portion.

A surgical stapler includes a first elongate member, a second elongate member, and a clamp member operable to releasably clamp the first elongate member against the second elongate member. A distal portion of the first elongate member supports an anvil surface having a plurality of staple forming pockets. A distal portion of the second elongate member is configured to receive a staple cartridge. A firing assembly of the surgical stapler is translatable from a first longitudinal position to a second longitudinal position to fire the staple cartridge when the first elongate member is clamped against the second elongate member. A retaining assembly of the surgical stapler includes a first retaining member configured to releasably couple a proximal end of the first elongate member with a proximal end of the second elongate member, and a second retaining member configured to releasably retain the firing assembly in the first longitudinal position.