81 results about "Tissue Dissection" patented technology

A histotripsy therapy system configured for the treatment of tissue is provided, which may include any number of features. Provided herein are systems and methods that provide efficacious non-invasive and minimally invasive therapeutic, diagnostic and research procedures. In particular, provided herein are optimized systems and methods that provide targeted, efficacious histotripsy in a variety of different regions and under a variety of different conditions without causing undesired tissue damage to intervening / non-target tissues or structures.

A histotripsy therapy system configured for the treatment of tissue is provided, which may include any number of features. Provided herein are systems and methods that provide efficacious non-invasive and minimally invasive therapeutic, diagnostic and research procedures. In particular, provided herein are optimized systems and methods that provide targeted, efficacious histotripsy in a variety of different regions and under a variety of different conditions without causing undesired tissue damage to intervening / non-target tissues or structures.

A surgical stapling instrument is configured to dissect tissue, apply a linear staple line along one side of the tissue dissection and apply a suture, such as a purse string suture, to the other side of the tissue dissection. The instrument comprises an elongate shaft, first and second jaws configured to open and close and a cutting element. The instrument includes a first row of staples in each of the first and second jaws having a suture extending therethrough and a second row of staples in the second jaw. A drive member is configured to translate distally through the end effector to dissect tissue with the cutting element, drive the second row of staples into the tissue on one side of the dissection and to apply the first row of staples and suture in combination to form a purse string suture on the other side of the tissue dissection.

The invention provides an interactive surgical case guidance method and system based on manual annotation guidance, a storage medium and electronic equipment, and relates to the field of model registration. According to the method, feature mark points are selected on a preoperative CT model, and intra-operative corresponding mark points are obtained on a color image frame; then non-rigid registration is carried out on the 3D Gaussian three-dimensional model based on three-dimensional Gaussian sputtering rendering, and an intraoperative CT model is obtained; performing Gaussian initialization and optimization on the intraoperative CT model; then receiving an ROI region marked on the color image frame at the intraoperative moment by a doctor, and respectively completing 3D Gaussian sampling and CT Gaussian sampling; and finally, the two Gaussian models are rendered separately based on GPU sorting and a block rendering strategy, and a fused image of the original image and the CT image for interactive surgical case guidance is obtained. According to the method, more accurate tissue anatomy information can be presented, accurate decision making is realized, a novice doctor is particularly helped to observe operation characteristics of different operation cases at different operation moments, and operation experience cognition is improved.

A surgical stapling instrument is configured to dissect tissue, apply a linear staple line along one side of the tissue dissection and apply a suture, such as a purse string suture, to the other side of the tissue dissection. The instrument comprises an elongate shaft, first and second jaws configured to open and close and a cutting element. The instrument includes a first row of staples in each of the first and second jaws having a suture extending therethrough and a second row of staples in the second jaw. A drive member is configured to translate distally through the end effector to dissect tissue with the cutting element, drive the second row of staples into the tissue on one side of the dissection and to apply the first row of staples and suture in combination to form a purse string suture on the other side of the tissue dissection.

A multifunctional electrosurgical device comprising a proximal portion comprising at least one electrical connector coupled to an electrical surgical unit, one or more irrigation tubes coupled to a fluid source and one or more suction tubes coupled to a waste receptacle. A shaft, at a distal portion, comprising a first bipolar electrode extending distally from the distal portion, configured to selectively provide a delivered electrical current to a target treatment area and a second bipolar electrode, extending distally from the distal portion, configured to receive a return electrical current from the target treatment area. The distal portion further comprising a retractable monopolar electrode, selectively extendable and configured to provide a delivered electrical current to the target treatment area and one or more user inputs for control of the bipolar or monopolar electrode activation, monopolar electrode expendability and retractability, irrigation of a fluid and suction at a treatment area.

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.

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.

To provide a tissue retraction device for assisting dissection of target tissue.SOLUTION: The present disclosure relates to a 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 a dissected portion of target tissue during a dissection procedure.SELECTED DRAWING: Figure 1B

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to traction systems, and methods of use thereof, for endoscopic procedures such as tissue dissection. For example, a traction system may include a filament extendable along an outer surface of an endoscope with a distal end of the filament attachable to a medical device engaged with a target tissue of a body lumen.

The invention discloses a surgical instrument, a surgical system and a surgical instrument.The surgical instrument comprises an instrument body, the instrument body is designed to be in a tweezers form for achieving tissue dissection and comprises first tweezers and second tweezers, and the surgical instrument is integrally provided with a bioelectricity monitoring device and / or an electrocoagulation device; wherein the bioelectricity monitoring device is used for monitoring a bioelectricity signal of a tissue to be subjected to surgical treatment by utilizing the first tweezers and the second tweezers; the electrocoagulation device is used for conducting electrocoagulation treatment on tissue to be subjected to surgical treatment through the first tweezers and the second tweezers. The surgical instrument has the functions of electrocoagulation and / or bio-electricity signal monitoring and tissue dissection, in the using process, the operation of electrocoagulation or electrophysiology monitoring or tissue dissection can be selectively executed according to needs, an operator can flexibly select according to needs, time waste caused by frequent replacement of the surgical instrument in the surgical process can be reduced, and the operation efficiency is improved. And the operation efficiency is greatly improved.

This disclosure generally relates to the field of medical devices. In particular, this disclosure relates to a tissue traction device, for example, for endoscopic tissue dissection. For example, the tissue traction device may include a first clamp including opposing jaws. The device may include a traction band having a first end, a second end, and a length extending therebetween and along a longitudinal axis. The band may have a first hole at the first end. A second hole may be present at the second end of the band. The first jaw of the opposing jaws of the first clamp may be disposed through the first hole.

A tissue dissecting device, including an inflatable bladder configured to be inserted into a body via an introducer tube in a compact deflated state, and to be inflated to a substantially planar form in a manner which dissects tissue. A method for dissecting tissue, including inserting an inflatable bladder, in a deflated state, via an introducer tube, into a space in a body, and inflating the bladder to a substantially planar form, thereby dissecting tissue. A method for dissecting tissue, including inserting an introducer tube via an incision into a body, inserting an inflatable bladder, in a deflated state, via the introducer tube, into a space in the body, pulling the introducer tube back at least a length of the deflated bladder, inflating the bladder, via a filling tube, to a substantially planar form, thereby dissecting tissue, disconnecting the filling tube from the bladder, retracting the filling tube and the introducer tube from the body. Related apparatus and methods are also described.

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to a tissue traction device, e.g., for endoscopic tissue dissection. For example, a tissue traction device may include a first clip comprising opposable jaws. The device may include a traction band having a first end, a second end, a length therebetween and extending along a longitudinal axis. The band may have a first aperture at the first end. A second aperture may be at the second end of the band. A first jaw of the opposable jaws of the first clip may be disposed through the first aperture.

A system and computer-implemented method are provided for identifying one or more anatomical regions in a series of pathology sections using a series of images representing digitized versions of the series. Annotations are obtained for at least two reference images, each annotation representing a anatomical region in a respective reference image. Annotations are then generated for intermediate images between the reference images based on bidirectional image registration. The two annotations are then propagated to each intermediate image, and the annotations are then combined to obtain a combined annotation for each intermediate image. This approach is well-suited for generating annotations for a series of pathology sections containing tissue sections of interest having complex three-dimensional shapes.

A system and associated method for manipulating tissues and anatomical or other structures in medical applications for the purpose of treating diseases or disorders or other purposes. In one aspect, the system includes a delivery device including a flexible portion that is suited to access target anatomy. The flexibility of an elongate portion of the delivery device can be varied. Additionally, the delivery device can include structure that maintains the positioning of the delivery device in patient anatomy.

The utility model belongs to the technical field of liquid nitrogen cryopreservation boxes, and particularly relates to a liquid nitrogen cryopreservation box for tissue anatomy sampling, which comprises a box body, an operation box fixedly connected to the lower part of the box body, a bottom plate fixedly connected to the lower part of the operation box, a heat preservation block fixedly connected to the inside of the box body, and a support plate slidably connected to the inside of the box body. A plurality of test tubes are slidably connected into the supporting plate, the test tubes are slidably connected into the heat preservation block, the upper portion of the box body abuts against a box cover, the lower portion of the box cover is fixedly connected with a heat preservation layer, the heat preservation layer abuts against the upper portions of the test tubes, and the lower portion of the supporting plate is highly connected with a plurality of threaded tubes. By arranging the driving assembly and the supporting plate, lifting of the supporting plate is achieved, hands do not need to stretch into the box body, the risk of frostbite is avoided, by arranging the fixing block, the sliding block and the fixing assembly, the box cover is easily opened and fixed, and the stability and safety of samples are maintained.

An electrosurgical forceps includes first and second shaft members and first and second jaw members extending distally from the respective first and second shaft members. A pivot couples the first and second shaft members with one another such that the first and second shaft members are movable relative to one another between a spaced-apart position and an approximated position to move the first and second jaw members relative to one another between an open position and a closed position. The jaw members are configured to facilitate tissue treatment, tissue division, and blunt tissue dissection.

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to a tissue traction device for endoscopic procedures such as tissue dissection. For example, a tissue traction device may include first and second attachment members pivotably attached by first and second swivels to opposite ends of a stretchable traction band comprising a compliant or semi-compliant material.

The present invention relates to the field of tissue dissection. Specifically, the present invention relates to a medical device for lifting and retracting tissue during a dissection procedure to improve visualization of the target tissue and to relieve obstacles caused by dissection tools. In particular, the present invention relates to a device for converting from a constrained configuration to an unconstrained arcuate configuration during a dissection procedure to secure and retract an excised portion of the target tissue.

The present invention relates to the field of medical devices. In particular, the present invention provides a tissue retraction device, e.g., for endoscopic tissue dissection.SOLUTION: The tissue retraction device includes a first clip 112 including a plurality of opposable jaws. The device includes a traction band 114 having a first end, a second end, a length between the first end and the second end, and extending along a longitudinal axis. The band has a first opening at a first end. The second opening is provided at a second end of the band. A first jaw of the opposable jaws of the first clip is disposed through the first opening.SELECTED DRAWING: Figure 1

A multifunctional electrosurgical device comprising a proximal portion comprising at least one electrical connector coupled to an electrical surgical unit, one or more irrigation tubes coupled to a fluid source and one or more suction tubes coupled to a waste receptacle. A shaft, at a distal portion, comprising a first bipolar electrode extending distally from the distal portion, configured to selectively provide a delivered electrical current to a target treatment area and a second bipolar electrode, extending distally from the distal portion, configured to receive a return electrical current from the target treatment area. The distal portion further comprising a retractable monopolar electrode, selectively extendable and configured to provide a delivered electrical current to the target treatment area and one or more user inputs for control of the bipolar or monopolar electrode activation, monopolar electrode expendability and retractability, irrigation of a fluid and suction at a treatment area.

The present invention generally relates to the field of medical devices. In particular, the present invention relates to traction systems and methods of use for endoscopic procedures, such as tissue dissection. For example, a traction system may include a filament extendable along an outer surface of an endoscope, wherein the distal end of the filament is attachable to a medical device that engages target tissue in a body cavity.

Blunt tissue dissection using a sharp cutting instrument to make an initial cut in tissue and an inflatable device to further separate tissue layers on either side of the cut. The sharp cutting instrument may be advanced through the lumen of an elongate delivery member such as through a working channel of a medical scope. The inflatable device is inserted over the exterior of the elongate delivery member.

Devices, systems (100, 200), and methods for separating tissue by moving a material layer (140, 240) with respect to a tissue-separating end effector (110, 210). The material layer is moved over a contact surface (152, 252) of the tissue-separating end effector. Contact of the material and the contact surface with tissue, with the moving material moving with respect to the contacted tissue, causes separation of contacted tissue. The tissue-separating end effector may be considered a blunt tissue dissector.

A modular surgical device is disclosed for efficient tissue dissection and fluid evacuation during surgical procedures. The device comprises a first portion with a cutting end tapered to a sharpened tip, a fluidic channel, and a uniquely shaped aperture. The aperture features an elliptical cross-section oriented at an angle relative to the device's longitudinal axis, potentially enhancing fluid flow dynamics. A releasable locking assembly securely connects the first portion to a second handle portion containing a fluidic channel and an angled external port for evacuation hose attachment. The device's modularity allows for customization and its angled port configuration is designed to minimize interference during surgical procedures.

A tissue dissection apparatus for treatment of a trigger digit is provided. The apparatus may include a handle, a shaft extending distally from the handle, a receiver defined in a proximal end of the handle opposite the shaft, and a foot disposed on a distal end of the shaft opposite the handle. The receiver may include a port shaped to accommodate entry of a cutting instrument such as a needle. The foot may include a concave contact surface and an opening disposed on the concave contact surface. The concave contact surface may be shaped to approximate the contour of a tendon sheath. The apparatus may further include a channel defined from the port to the opening. The channel may be configured to axially receive the cutting instrument including a tip that is configured to dissect tissue during a surgical procedure.

A tissue dissection apparatus for treatment of a trigger digit is provided. The apparatus may include a handle, a shaft extending distally from the handle, a receiver defined in a proximal end of the handle opposite the shaft, and a foot disposed on a distal end of the shaft opposite the handle. The receiver may include a port shaped to accommodate entry of a cutting instrument such as a needle. The foot may include a concave contact surface and an opening disposed on the concave contact surface. The concave contact surface may be shaped to approximate the contour of a tendon sheath. The apparatus may further include a channel defined from the port to the opening. The channel may be configured to axially receive the cutting instrument including a tip that is configured to dissect tissue during a surgical procedure.

The disclosure provides an elongate tissue dissection and removal catheter having a length and defining a longitudinal axis along the length of the catheter. The tissue dissection and removal catheter includes an outer tubular member having a proximal end, a distal end, and defining an elongate passage therethrough along its length, and a subassembly slidably disposed in the elongate passage of the outer tubular member. The subassembly includes first and second deployable stabilizers configured to expand in lateral width along a direction transverse to the longitudinal axis when unconstrained by the outer tubular member. Each stabilizer can define a curved free distal end that is configured to be received within a cusp of a respective cardiac valve leaflet.

A system for automated comprehensive assessment of clinical lumbar MRIs includes a MRI standardization component that reads MRI data from raw lumbar MRI files, uses an artificial intelligence (AI) model to convert the raw MRI data into a standardized format. A core assessment component automatically generates MRI assessment results, including multi-tissue anatomical annotation, multi-pathology detection and multi-pathology progression prediction based on the structured MRI data package. The core assessment component contains a semantic segmentation module that utilizes a deep learning artificial intelligence (AI) model to generate an MRI assessment results that contains multi-tissue anatomical annotation, a pathology detection module to generate multi-pathology detection, and a pathology progression prediction module to generate multi-pathology progression prediction. A model optimization component archives clinical MRI data and MRI assessment results based on comments provided by a specialist, and periodically optimizes the AI deep learning model of the core assessment component.