1054results about "Excision instruments" patented technology

Disclosed herein are apparatuses, systems, kits, and methods for treating skin, such as skin tightening or for treating diseases, disorders, and conditions that would benefit from tissue area or volume reduction, skin restoration, skin tightening, skin lifting, and / or skin repositioning and / or for generally improving skin function or appearance (e.g., the removal of unwanted skin features or irregularities such as sebaceous glands, sweat glands, hair follicles, necrosis, and fibrosis). Such apparatuses, systems, kits, and methods comprise an apparatus having a handheld main body and a detachably attachable tip comprising one or more needles.

The invention provides a digestive tract reconstruction device for protecting an anastomotic stoma, and relates to the field of medical instruments. The device comprises a nail anvil assembly, a nail bin assembly, a connection closing assembly and an anastomotic stoma protection assembly. A rotary guide mechanism is arranged in the nail bin assembly and drives the nail anvil assembly to rotate by a preset angle during axial movement, so that the short shaft of the oval nail anvil is aligned with the long shaft of the anastomotic stoma and exits without interference. And barbs are arranged in the cutting knife to hang and cut tissues, so that the nail anvil can be greatly overturned. The anastomotic stoma protection assembly comprises a degradable gasket and a folding flow guide tube, and the flow guide tube retreats and is unfolded along with the nail anvil to cover the anastomotic stoma and isolate pollutants. The mechanical injury of the anastomotic stoma when the nail anvil is withdrawn can be avoided, and the risks of infection, bleeding and leakage of the anastomotic stoma after operation are effectively reduced.

A computer-implemented method of providing plaque data (110) for a plaque deposit (120) in a vessel (130), is provided. The method includes: receiving (S110) computed tomography, CT, data (140) representing the vessel (130); generating (S120), from the CT data (140), a cross-sectional representation (150) of the vessel (130) at each of a plurality of positions (A-A′, B-B′) along the vessel; extracting (S130), from the cross-sectional representations, plaque data (110) comprising at least one measurement of the plaque deposit (120) at the plurality of positions along the vessel; and outputting (S140) a graphical representation of the plaque data (110).

Some embodiments of a rotational atherectomy and lithotripsy system can partially or completely remove a stenotic lesion in blood vessels by rotating one or more abrasive elements to abrade and breakdown the lesion, by emitting acoustic energy to fracture and breakdown the lesion, or a combination of both.

Some embodiments of a rotational atherectomy device can remove (partially or completely) stenotic lesions in blood vessels by rotating one or more abrasive elements in an orbital path to abrade and breakdown the lesion. In particular implementations, multiple abrasive elements are arranged along a distal portion of a drive shaft with an improved configuration so as to facilitate both efficient navigation into vessels extending from the abdominal aorta such as the common iliac artery, the external iliac artery, the internal iliac artery, the profunda artery, the gluteal artery, and the pudental artery and effective orbital paths for abrading stenotic material in such vessels and junctions between such vessels.

In some embodiments, an apparatus includes a handle assembly configured to be coupled to a tissue excision device. The tissue excision device can be configured to excise a target tissue site from a lung. The handle assembly can be configured to transition between a first operation and a second operation mode. The handle assembly in the first operation mode configured to form a portion of a tissue column. The handle assembly in the second operation mode configured to separate the tissue column from surrounding tissue, the handle assembly configured to transition from the first operation mode to the second operation mode after the tissue excision device forms a tissue column including the target tissue site.

The present invention features methods of manipulating subdermal fat in a treatment area. Such methods include inserting a needle (e.g., a micro-coring needle) through the dermis to the subdermal fat layer in order to excise a portion of tissue from the treatment area. These insertions result in a portion of the dermis and a portion of the subdermal fat to enter into the needle. Removal of the needle results in excision of the portion of dermis and subdermal fat that entered into the needle.

Disclosed herein are apparatuses, kits, and methods for treating skin, such as skin tightening, e.g., reducing skin laxity, for treating conditions that would benefit from tissue area or volume reduction, skin restoration, skin tightening, skin lifting, and / or skin repositioning, and / or for generally improving skin function or appearance. Such apparatuses, kits, and methods include one or more hollow needles each having at least one prong and a mechanism for removing skin tissue portion(s) from the hollow needle(s).

Some embodiments of a rotational atherectomy device can remove (partially or completely) stenotic lesions in blood vessels by rotating one or more abrasive elements in an orbital path to abrade and breakdown the lesion. In particular implementations, multiple abrasive elements are arranged along a distal portion of a drive shaft with an improved configuration so as to facilitate both efficient navigation into smaller blood vessels below the ankle or in the heart and effective orbital paths for abrading stenotic material in such smaller vessels.

A platform device for material excision or removal from vascular structures for either handheld or stereotactic table or robotics platform use may comprise a work element or elements configured to selectively open and close at least one articulable beak or scoopula configured to penetrate and remove intra-vascular materials or obstructions, or follow a central lumen of another device or over a wire in a longitudinal direction. A telescoping set of inner and outer tube axially actuated together and to actuate a beak set, axially actuated differentially, whether controlled mechanically or electronically may be combined with an outer tubular sheath, which may be full circumference or partial circumference along its length, to form a system for rotational non-sharp dissection, coring, severing off, transporting or in the reverse, depositing various fluids and solids for a variety of clinical uses.

The present disclosure relates to tissue cutting tools that can be used for forming an opening in a target tissue, such as a host leaflet within which a guest prosthetic valve can be expanded. In an example, the tissue cutting tool comprises an actuation tube and a blade support tube extending therethrough. A distal portion of the blade support tube can be coupled to a distal portion of the actuation tube, and a proximal portion of the blade support tube can be axially movable with respect to a proximal portion of the actuation tube. The blade support tube also includes a bendable section extending between its distal and proximal portions, and configured to transition between unbent and bent configuration thereof. At least one blade is coupled to at least one arm of the bendable section.

A system and method for modifying a heart valve utilizing a leaflet crossing tool and a cutting element.

At least some embodiments of the present disclosure are directed to systems and methods for creating a shunt in a patient. In some embodiments, a shunting catheter includes a catheter shaft including a shaft lumen and a side opening, and a tissue-removal assembly disposed in the shaft lumen in a first state and including a shunting shaft being extendable from the side opening of the catheter shaft. In some examples, the shunting shaft has a curved shape when extending from the side opening to a second state. In some examples, the tissue-removal assembly includes a cutting component disposed at a distal end of the shunting shaft.

The present technology relates to systems and methods for removing a thrombus from a blood vessel of a patient. In some embodiments, the present technology is directed to a system including an elongate catheter having a distal portion configured to be positioned within a blood vessel of a patient, a proximal portion configured to be external to the patient, and a lumen extending therebetween. The system can also include a fluid delivery mechanism coupled to the fluid lumen and configured to apply fluid to at least partially fragment the thrombus.

Disclosed herein is a pulsating aspiration system including a catheter and a pump system. The catheter includes an outer wall, a proximal portion, a distal portion, and an inner wall dividing the proximal portion into a central main lumen and an auxiliary lumen. The pump system is in fluid communication with the catheter and independently controls negative and positive fluid pressures within the central main and auxiliary lumens to generate a pulsating aspiration waveform at the distal end of the catheter that is variable between a maximum aspiration pressure and a maximum positive pressure. The maximum aspiration pressure can be generated at the distal end of the catheter when the resulting pressure is solely negative fluid pressure, and the maximum positive pressure can be generated at the distal end of the catheter when the positive fluid pressure balances the negative fluid pressure.

The utility model relates to a loop ligature device capable of pushing and tightening an elastic thread, a main body of the loop ligature device is a loop ligature anastomosis gun, and the loop ligature anastomosis gun comprises an adsorption assembly and a handle assembly which are sequentially connected from front to back; the adsorption assembly comprises an adsorption head and an adsorption pipe which are sequentially connected from front to back; an elastic thread pull rod and an elastic thread connected to the front end of the elastic thread pull rod are further arranged below the adsorption pipe; the elastic thread extends in the front-back direction, and the front end of the elastic thread extends to the periphery of the front end of the adsorption head. The adsorption assembly is sleeved with a wire pushing mechanism. And the elastic thread pull rod is connected with a thread tightening mechanism arranged in the fixed handle. The utility model has the beneficial effects that: 1, the movable handle not only can realize the wire pushing operation, but also can realize the multi-time wire tightening operation, and the wire tightening length can be accurately controlled, thereby being convenient to quantify; 2, the wire pushing operation and the wire tightening operation are realized on the movable handle, the operation is simple and quick, and the structure is easy to realize;

The invention discloses a head-steerable arthroscope planer tool based on soft hydraulic drive, which comprises an operating handle and a hollow main rod connected with the operating handle, the free end of the hollow main rod is connected with a soft driver, and the soft driver comprises a soft tube. A central channel is formed in the side wall of the flexible pipe, a plurality of axially-arranged hydraulic cavities are formed in the side wall of the flexible pipe around the central channel, a planing window is formed in one side of the free end of the flexible pipe, a rotatable planing tool bit is arranged in the planing window, and a liquid pump, a control module and a low-pressure liquid storage device connected with the liquid pump are installed in the operating handle; a plurality of fluid control valves in one-to-one correspondence with the hydraulic cavities are further arranged in the operating handle, the fluid control valves are communicated with the hydraulic cavities through corresponding hydraulic micro-pipes, the hollow main rod is provided with a flexible transmission shaft connected with the planing tool bit, and one end of the flexible transmission shaft is connected with a motor. The planer tool can solve the problems that an existing planer tool for the arthroscope cannot continuously adjust the working angle and cannot actively adapt to complex anatomical forms.

The invention discloses a linear cutting and closing device for polyp resection under an endoscope, relates to the technical field of medical closing devices, and aims to solve the technical problems that perforation is easily generated in linear cutting and closing cutting, and repeated cutting is needed. Magnetic attraction linkage is taken as a core, the clamping force of the closed clamp is accurately controlled through the first magnetic attraction block, and a fine adjustment structure and a clamping limiting design are matched, so that sufficient clamping and one-time complete excision of a polyp are realized, and multiple times of cutting are avoided; the flexible lead body and the miniaturized structure are matched with an endoscope channel, so that the operation flexibility of a complex digestive tract is improved; the automatic conveying and clamping structure can immediately close the wound surface, and the bleeding and perforation risks are reduced; the whole-course button control simplifies operation, the elastic reset assembly reduces manual steps, and the operation time is shortened. The operation safety, the operation convenience and the adaptability are considered on the whole, the complication occurrence rate is effectively reduced, and the clinical treatment effect and efficiency of the endoscopic polyp resection operation are remarkably improved.

The invention relates to the field of dermatology, and provides a rapid skin tumor resection tool aiming at the technical problem that an existing resection device is low in use efficiency, the rapid skin tumor resection tool comprises a shell with the inner area divided into a front end cavity, a middle end cavity and a rear end cavity, a front cover and a rear cover are rotationally connected to the positions, located outside the front end cavity and the rear end cavity, of the shell, the cutting device is arranged in the shell, and the cutting device comprises a high-pressure gas driving module which is arranged in the rear end cavity and extends to the middle end cavity; the homologous driving type displacement and rotary excision module is arranged in the front end cavity and is communicated with the high-pressure gas driving module; and the synchronous collection module is arranged in the front-end cavity. High-pressure gas is adopted as a power source of the excision device, generated chippings and blood can be blown away in time, the surgical field is kept in a clean state all the time, the tumor can be rapidly and accurately excided, and the use efficiency is high.

A system for transvascular delivery to an aortic arch of a patient includes an embolic protection device, a connector mechanism, and a catheter or sheath for delivering the embolic protection device to a working zone. The embolic protection device includes a support frame having a distal portion and a proximal portion, and a filter member attached to the support frame and configured for preventing embolic materials from passing there through. At least one of the distal portion and the proximal portion includes a spring section configured for providing a radial force between the support frame and a wall of the aortic arch when in an expanded state. The embolic protection device is pivotable axially but not radially relative to the connector mechanism.

A catheter for forming a fistula between two vessels. The catheter comprises a catheter body having a longitudinal axis, an electrode extending radially from the catheter body for contacting a vessel wall and forming the fistula, and a cutting unit disposed proximally or distally of the electrode for cutting a venous valve.

Systems and methods for sealing tissue sites may comprise coring tissue at a target site such that a tissue core is removed from the target site thereby creating a core cavity at the target site and causing sealing of at least a portion of the target site.

Methods and apparatuses for blood clot aspiration. Described are fluid management components and assemblies for blood clot extraction from a patient's body and for filtering blood and recirculating blood back into the patient's body.

A design is described herein for rings and for cutting rings for a device used in capsulotomy procedures. A set of ring dimensions can describe a desired height of a ring at each location of the ring. The set of ring dimensions is also associated with an intended wall thickness, and thus is associated with an intended cross-sectional area at each ring location. A wall thickness at each portion of a can vary from the intended wall thickness specified by the set of ring dimensions at various locations of the ring. At these locations, the height of the ring can be varied such that the resulting cross-sectional area of the ring at these locations is substantially similar to the intended cross-sectional area of the ring at the locations.

The present disclosure comprises a device for crushing stones, which may optionally include a first connector forming a first port, wherein the first connector is configured to be coupled to a first evaluation tube, a second connector forming a second port, a housing, and an auger. The second connector may be configured to be coupled to a second suction tube. The housing may have a lumen that is in fluid communication with the first and second connectors. The auger may be positioned within the lumen adjacent to the housing. The auger may be rotatable within the lumen to crush the stone into fragments and thus prevent clogging of the second suction tube.

An intravascular device and methods of using the same are provided. An expandable portion includes struts movable between a collapsed position and an expanded position, and tissue modification element(s), each having a lower portion residing within or attached to one of the struts, an upper portion which extends outwardly from an outer surface of the strut and physically interacts with tissue during use. Irrigation and / or suction device(s) are provided for providing at least one of irrigation fluid and suction force at the expandable portion when operated.

The utility model provides a haemorrhoids loop ligature anastomat with a limiting structure, and belongs to the technical field of anastomats. The haemorrhoids loop ligature anastomat with the limiting structure comprises a haemorrhoids loop ligature anastomat part and a limiting assembly. The ligation tube part is mounted at the front end of the handle part; the top ends of the two arc-shaped clamping plates are both fixedly connected with lug plates, a rotating shaft is arranged between the two lug plates in a rotating mode, the rotating shaft is sleeved with a spring piece, the extending end of the spring piece makes contact with and abuts against the opposite faces of the two lug plates, and the two arc-shaped clamping plates are detachably arranged on the outer side of the ligation tube part in a clamped mode. Under the action of an arc-shaped clamping plate, an ear plate and a spring piece, the ligation tube part can be limited, so that an operator can find that the ligation tube part moves towards the interior of the anus or slides towards the exterior of the anus in time during operation, remedy can be carried out, and the error rate of an operation is reduced.

This invention relates to a tissue resection instrument with a curved shaft and its assembly method, belonging to the field of medical device technology. The instrument includes: a handle with a power input shaft inside; an insertion part including a peripheral tube and a flexible shaft movably inserted within the peripheral tube; the proximal end of the flexible shaft is drivenly connected to the power input shaft; the peripheral tube has a bending area; a cutting head disposed at the distal end of the insertion part; a front-end constriction tube, the proximal end of which is connected to the insertion part, and the outer diameter of its distal end being smaller than the outer diameter of the insertion part; a cutting head mounting shaft is provided at the proximal end of the cutting head, the cutting head mounting shaft movably inserted within the front-end constriction tube, and the cutting head mounting shaft is drivenly connected to the distal end of the flexible shaft via a crimping sleeve. An elastic sleeve is provided between the cutting head mounting shaft and the inner hole of the front-end constriction tube, thereby improving the high-speed stability of the cutting head.