153results about "Blunt dissectors" patented technology

A balloon for a balloon catheter including a straight tubular part, a proximal tapered part located proximal to the straight tubular part, a distal tapered part located distal to the straight tubular part, and a drug layer, is provided. The straight tubular part includes a balloon body and a convex strip which protrudes outwards in a radial direction on an outer surface of the balloon body. The drug layer is provided on the outer surface of the straight tubular part including a lateral surface of the convex strip. A crack is formed on a surface of the drug layer extending along a base of the convex strip.

A method for adjusting the operation of a surgical instrument using machine learning in a surgical suite is disclosed.

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.

The present invention relates to a disposable medical device for treating fistula diseases, inflammatory diseases, and functional diseases in anorectal medicine, specifically a fistula snare and a method for using the device, comprising a handle and a rubber ring guide head. One end of the handle is configured as an open structure, and a push rod is slidably connected to the handle. The push rod is a hollow structure with both ends open. One end of the push rod is configured as a ligation portion. The ligation portion extends out of the open end of the handle or is retracted into the handle by sliding the push rod. The rubber ring guide head is detachably connected to the ligation portion of the push rod. When the ligation portion extends out of the open end of the handle, the rubber ring guide head is connected to the ligation portion of the push rod. When the ligation portion is retracted into the handle, the rubber ring guide head is separated from the ligation portion of the push rod. The present invention ligates an elastic line through the combination of the rubber ring guide head and the push rod, thereby improving the efficiency of rubber ring application and reducing the instrument operation time during surgery. This fills the gap in disposable special instruments in the field of puncture and thread hanging for anorectal diseases.

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.

The present disclosure relates to the field of tissue anatomy. In particular, the present disclosure relates to medical devices that lift and retract tissue during an anatomical procedure to improve visualization of target tissue and mitigate obstruction of anatomical tools. Specifically, the present disclosure relates to a tissue retraction device that moves from a constrained configuration to a relaxed configuration during an anatomical procedure to secure and retract an exfoliated portion of target tissue.

An apparatus is provided for subcutaneous implantation in a patient using a tunneling instrument. The implantation apparatus comprises a vascular graft and a connector adapted to couple a distal end of the tunneling instrument and a proximal end of the graft. The connector comprises a tip, a first end of the tip configured to be received within the proximal end of the graft, a clip for securing the graft to the tip, and a coupler for a rotatable connection of the tip to the tunneling instrument such that the tip is rotatable about its longitudinal axis relative to the coupler to facilitate attachment of the graft to the tunneling instrument. The implantation apparatus may further comprise a removable sheath configured to substantially cover the length of the graft.

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.

The ophthalmic surgical instrument for peeling a retinal membrane includes a handpiece and an actuator mounted on the handpiece. An outer tube has a proximal end attached to the handpiece. A dissecting spatula can be extended outward relative to the distal end of the outer tube in response to movement of the actuator, the dissecting spatula defining a channel connected to an opening proximate the distal edge of the dissecting spatula. A distribution system is in fluid communication with the channel. The distribution system may include a reservoir within the handpiece. The fluid may be dyed blue to enhance visibility of the peeled portion of the retinal membrane.

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.

The application provides an assembly and a surgical kit for a surgical instrument, the assembly comprising a separate piece and a packaging box, the separate piece being switched between a first state and a second state with the surgical instrument through a clamping mechanism, in the first state, the separate piece is connected with the surgical instrument; in the second state, the separate piece is separated from the surgical instrument; the packaging box comprises a receiving part for receiving the separate piece, and the packaging box further comprises an operating piece, the operating piece drives the clamping mechanism so that the separate piece is switched from the first state to the second state. The assembly of the application comprises a separate piece and a packaging box, the separate piece is used for peeling target tissue, and the operation of a doctor is more convenient. The packaging box not only provides packaging for the separate piece, but also serves as a dismounting tool of the separate piece relative to the surgical instrument, and the design is very ingenious.

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.

The disclosure provides improved methods and devices to create a hammock effect to stabilize the urethra without creating an incision in the abdomen or the vagina, and without using a surgical mesh. Such implementations can also leave no permanent material in the body. The simplicity afforded by such procedures and methods permits treatment of patients on an outpatient basis, and avoids risks and disadvantages associated with the installation of a permanent mesh.

A device for blood vessel harvesting is disclosed. The device includes a distal housing, a dissector coupled to the distal housing, a drive element coupled to the dissector, and an actuator coupled to the drive element. The device may also include: a rotatable dissector; a shaft coupled to the distal housing, the shaft having a first articulated joint movable within a first plane and a second articulated joint movable within a second plane, the second plane being substantially perpendicular to the first plane; a drum chain drive element coupled to the rotatable dissector; and an actuator coupled to the drive element. The device may also include a member slidably engaged to the distal tip.

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).