317results about "Blunt dissectors" patented technology

Provided herein are methods and devices for grasping and / or tearing trabecular meshwork of an eye of a subject. The devices may include a shaft and a tissue grabber coupled to the shaft. The tissue grabber may include an elongate lower foot configured to be inserted into Schlemm's canal, and a groove configured to grasp a portion of the trabecular meshwork. The methods may include: advancing a tissue grabber to Schlemm's canal of the eye, wherein the tissue gripper comprises a lower foot and a tissue grabbing region; advancing a tip of the lower foot through the trabecular meshwork and into Schlemm's canal; and advancing the lower foot within and relative to Schlemm's canal, wherein as the lower foot is advanced, a portion of the trabecular enters the tissue gripping region, is torn from surrounding tissue, and is collected within the tissue gripping region.

Methods of using a soft tissue cutting device are disclosed. The methods include providing the soft tissue cutting device, positioning the soft tissue cutting device in a priming slot of a tray configured for receiving and holding the soft tissue cutting device, attaching a priming syringe to the soft tissue cutting device, priming a balloon disposed on a distal end of the soft tissue cutting device by equalizing a first pressure inside the balloon to a second pressure inside the priming syringe, removing the soft tissue cutting device from the priming slot, and positioning the distal end of the soft tissue cutting device on a safety slot included in the tray to determine whether the tissue cutting device has been properly primed.

To provide a separation member for use in surgical instruments and surgical instrument.SOLUTION: A separation member comprises an attachment part 220 and an operation part 230 connected to each other. The attachment part includes an engagement portion 240, and the engagement portion and a surgical instrument are elastically joined and separated. The operation part is used to ablate tissue. The engagement portion is used for detachably connecting the attachment part of the separation member to the surgical instrument. The separation member is used to ablate the target tissue.SELECTED DRAWING: Figure 5

Access assemblies include an instrument valve housing and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a guard assembly, and a seal assembly disposed distal of the guard assembly. The seal assembly includes a support member including a ring portion and a seal portion disposed within the ring portion. The seal assembly further includes a plurality of seal sections extending from the ring portion of the support member. The support member and the plurality of seal sections are integrally formed.

A multi-portal method for treating a subject's spine includes using a marking guide to align spinal incisions. The marking guide can include alignment features, such as radiopaque structures or elements that align with features such as anatomical elements, planes, implants, and / or the like. The marking guide can fit multiple access instruments, such as expandable scalpels, depth guides, surgical instruments, and / or the like. A user can position the access instrument relative to a feature using an alignment feature of the marking guide. The access instruments can be used to create incision sites and prepare entrances for multiple cannulas, cannulas and surgical instruments, multiple surgical instruments, and / or the like. One or more access instruments can be used to enlarge a working space between the entrances for delivery of an interbody fusion implant. The patient's spine can be visualized using endoscopic techniques to view the working space throughout the surgical procedure.

An assembly and / or system having a cutting device configured to cut tissue, and an inflatable device configured for insertion into the cut tissue to further separate the cut tissue. The inflatable device may be wedge shaped to separate the cut tissue upon insertion into the cut. The inflatable device is inflatable and otherwise adjustable to separate the tissue to a medically indicated extent. For instance, the inflatable device may be moved axially with respect to the cutting device; and / or may be sheathed or unsheathed to adjust an exposed inflated length thereof; and / or may include two or more separately inflatable elements. The inflatable device thus may be used to achieve blunt tissue dissection after an initial cut is made into the tissue with a sharper instrument.

A system for harvesting a tendon graft is disclosed, the system including a retractor, a guide and at least one harvesting tool. The retractor holds open an anatomic space in a patient above the tendon. The guide assembles with the retractor to orient a guide shaft along the retractor and thereby the anatomic space. A first harvesting tool and the guide include a plurality of surfaces that cooperate with each other to transect the tendon and form at least one side of the tendon graft, the plurality of surfaces cooperating to limit a trajectory and a depth of cut into the tendon and also limiting both ends of the translational extent of the harvesting tool along the tendon. A second harvesting tool may extend along the anatomic space formed by the retractor and form both a posterior cut along the tendon and transect a tendon graft end.

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.

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.

The invention discloses a scalpel assembly special for tendon sheath release. The scalpel assembly comprises a grip and a scalpel body. The front end of the grip is rotationally connected with the cutter body; the upper portion of the knife body is provided with a covering end, the lower portion is provided with a tendon end, and the middle of the rear end is provided with a connecting rod rotationally connected with the handle. The front end of the tendon end is fusiform, and a binding surface is arranged on one surface far away from the knife body; the binding face is arranged to be an inwards-concave curved face. In the tendon sheath release operation, the binding face can be tightly attached to the surface of the tendon, the situation that due to the fact that a traditional scalpel is difficult to be tightly attached to the tendon, the tendon is cut by mistake due to slight deviation in the operation process is effectively avoided, the operation risk is greatly reduced, and the occurrence probability of postoperative tendon dysfunction and other serious complications is reduced.

The disclosure provides example methods, systems and apparatus for stabilization of a rib. An example method includes: (a) accessing a medullary canal of a rib having a fracture, (b) advancing a guidewire into the medullary canal across the fracture, (c) advancing a delivery catheter containing a stent over the guidewire into the medullary canal and across the fracture, (d) retracting the delivery catheter relative to the stent, and (e) expanding the stent in the medullary canal.

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

Creating a dissected tissue space in a human subject by using ultrasonic guidance includes inserting a distal end of a. dilator assembly into a tissue space of a. subject, causing and regulating distal movement of the dilator assembly, and subsequent to cessation of the distal movement, deploying an inter-tissue or inter-organ spacer in the tissue space so as to separate a. first tissue from a second tissue, or a. first organ from a second organ. In one example, the dissected tissue space is between a prostate and a rectal wall of a human subject. A medical dilator kit for an ultrasound-guided tissue dissection includes a beveled-tip medical dilator and a dilator-sheath having an internal diameter greater than or equal to an external diameter of the dilator.

A surgical stapler includes a tool assembly that has a cartridge assembly, an anvil assembly, and a dissector tip. The dissector tip is moveable between a first configuration aligned with a longitudinal axis of the tool assembly and a second configuration defining an acute angle with the longitudinal axis of the tool assembly.

A vibrating tissue separator suitable for use in separating a lenticule established by a femtosecond laser during a smile procedure may include a surgical implement such as a blunt spatula mounted on a handle that carries a haptic actuator for applying vibratory motion to the surgical implement. A damping arrangement may be provided to isolate the surgeons hand from the vibrations which would otherwise be transmitted through the handle. The actuator may apply a linear vibration along the axis of the handle which applies a lifting and chopping motion to the tip of a surgical implement having a bend. The tip may be suitable to the tissue being separated. For example, for SMILE lenticule separation, a blunt or semi-sharp spatula, blunted wire or loop may be used. The direction of vibration at the tip may be changed by rotating the implement in a plane other than the plane of the bend or by rotating an actuator such as an LRA with respect to the handle.

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 probe and a method for forming and enlarging an access opening through a psoas muscle to provide for minimally invasive lateral approach for surgical access to a lumber intervertebral disc. A distal end portion of the probe is equipped with an electrode useful for confirming proper location of the probe and includes an inflatable dilator body for enlarging an access opening through tissue adjacent to a spinal column. The probe includes a cannula through which a K wire can be extended to anchor the probe to a patient.

A drainage tube guide device is provided, which includes a head portion extending to one side, a guide tube formed with a hollow and extending downward from the head portion, and a drainage tube fixed to the end of the guide tube and pulled in while dissecting tissue in front of it, and after the drainage tube is integrally connected to the guide tube, the end of the drainage tube can be removed when it reaches a target point.

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 instruments for blowing gas into a living organ to facilitate the dissection of that organ. The instrument according to the invention essentially comprises a handling handle 10 adapted to be grasped by a surgeon; an outlet 11 formed on the handle; a tube 12 having a through bore 13 defined between a proximal inlet 14 and a distal outlet 15; means for connecting the proximal inlet of the bore 13 with the orifice 11; means 16 for coupling an external gas supply source with the outlet orifice 11; the portion of the through bore 13 which is formed in the part of the tube 12 having the distal outlet 15 being substantially flared into a truncated cone 20, optionally of revolution, the large base 25 of this truncated cone being substantially coincident with the distal outlet 15 of the bore 13.

A surgical dissector instrument 1 has a pair of arms 2 pivotably connected intermediate their ends, each arm having a handle 6, 24 at one end and a tooth formation 8 at the other. The distal teeth 8 a

Surgical instruments with ultrasonic cutting and sensing capabilities, as well as related systems and methods, are disclosed herein. In one aspect, the present disclosure provides a surgical instrument including a housing; an ultrasonic transducer contained in the housing and capable of acting as an ultrasonic receiver; an output member at least partially received in the housing and configured to be driven by the ultrasonic transducer; a dissection head having an attachment portion configured to be selectively driven by the ultrasonic transducer; and a controller operable to initiate and stop the ultrasonic transducer according to an alternating duty cycle.

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 dissection. Specifically, the present disclosure relates to medical devices which lift and retract tissue during a dissection procedure to improve visualization of the target tissue and mitigate obstruction of dissection tools. In particular, the present disclosure relates to a tissue retraction device which moves from a constrained to relaxed configuration to immobilize and retract the dissected portion of target tissue during a dissection procedure.

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.

A catheter extraction tool has a head that can be placed in position to significantly surround a diameter of a catheter. The head is shaped to have a low enough profile above the catheter to allow the head to be slid down the catheter and into a subdermal region in which the catheter is subdermal with respect to a patient. The head of the catheter extraction tool is expanded sufficiently to slide the head over a catheter cuff located in the subdermal region. After the head of the catheter extraction tool slides over the catheter cuff, the head is contracted to engage the catheter so that a user can pull the catheter out of the patient using the catheter extraction tool.