43 results about "Organ cavity" patented technology

In one embodiment, a pressure sensing system is described which transmits data to a patient management system external to a patient. The pressure sensing system can rigidly couple to an implantable port or flexibly couple to an implantable port. In some embodiments, the pressure sensing system communicates with a hydraulic actuating system. In some embodiments, the pressure sensing system is implantable and comprises a circuit capable of wireless transmission through the skin of a patient to an external receiver which is part of a patient management system. A patient management system is described which receives up to date as well as historical data from the pressure sensing system and manages the these data in the context of a patient database. In some embodiments, an extragastric balloon is described in which the balloon is contoured to fit a portion of the stomach but not circumscribe the stomach. In some embodiments, electroactive polymers or nitinol structures are utilized to create restriction on the stomach in response to food boluses entering the stomach. In some embodiments, a nasogastric connector is described with two expandable structures translateable toward and away from one another so as to create pressure between two organ lumens when brought toward each other and fixed with respect to one another.

In one embodiment, a pressure sensing system is described which transmits data to a patient management system external to a patient. The pressure sensing system can rigidly couple to an implantable port or flexibly couple to an implantable port. In some embodiments, the pressure sensing system communicates with a hydraulic actuating system. In some embodiments, the pressure sensing system is implantable and comprises a circuit capable of wireless transmission through the skin of a patient to an external receiver which is part of a patient management system. A patient management system is described which receives up to date as well as historical data from the pressure sensing system and manages the these data in the context of a patient database. In some embodiments, an extragastric balloon is described in which the balloon is contoured to fit a portion of the stomach but not circumscribe the stomach. In some embodiments, electroactive polymers or nitinol structures are utilized to create restriction on the stomach in response to food boluses entering the stomach. In some embodiments, a nasogastric connector is described with two expandable structures translateable toward and away from one another so as to create pressure between two organ lumens when brought toward each other and fixed with respect to one another.

In one embodiment, a pressure sensing system is described which transmits data to a patient management system external to a patient. The pressure sensing system can rigidly couple to an implantable port or flexibly couple to an implantable port. In some embodiments, the pressure sensing system communicates with a hydraulic actuating system. In some embodiments, the pressure sensing system is implantable and comprises a circuit capable of wireless transmission through the skin of a patient to an external receiver which is part of a patient management system. A patient management system is described which receives up to date as well as historical data from the pressure sensing system and manages the these data in the context of a patient database. In some embodiments, an extragastric balloon is described in which the balloon is contoured to −..it..i poi.jLυπo± the stomach nur not circumscribe the stomach. In some embodiments, electroactive polymers or nitinol structures are utilized to create restriction on the stomach in response to food boluses entering the stomach. In some embodiments, a nasogastric connector is described with two expandable structures translateable toward and away from one another so as to create pressure between two organ lumens when brought toward each other and fixed with respect to one another.

Disclosed herein is a cannula assembly for directing the flow of material from an organ chamber, e.g., blood from the left chamber of the heart, and methods of placing the cannula assembly in fluidic communication with the chamber. The cannula assembly includes an elongate tubular member and a coupling assembly disposed at the distal end of elongate tubular member. The elongate tubular member includes a lumen extending from a distal opening at the distal end to a proximal opening at the proximal end. The coupling assembly includes a retaining element and a retention member configured to cooperate with each other and with the portion of the organ wall surrounding the opening in the wall to couple or anchor cannula system to the wall and to provide fluidic communication between the distal opening of the elongate tubular member and the organ chamber.

A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) has a tubular wire frame (1) with rows of elongate cells (2) having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.

The invention discloses a method for reconstructing three-dimensional surface of human organs and a system thereof, aiming to solve the problems in the prior cavity surface reconstruction method, including rough reconstruction surface and inability to reconstruct surface of multi-furcate complex organ cavity. The method comprises the following steps of collecting spatial position information of a plurality of points on the surface of an organ; adding one or more restriction points containing spatial position information; constructing and solving a function according to the spatial position information at the sampling point and the restriction points; and performing isosurface extraction of all points with the same functional value of the sampling point to obtain a reconstructed surface of the organ. The inventive method and system can accurately reconstruct the surface model of multi-furcate complex organs, and can obtain smooth surface model, which nearly approaches to the geometry of the original cavity.

The present invention relates to a particularly convenient medium for providing contrast enhancement and / or distension of the subject body or organ cavity during imaging, radiographic, visualization, or other similar medical examinations, including ultrasound, endoscopic examinations, MRI, x-ray, hystero-salpingograms, CT scans, and similar procedures. The present invention provides the contrast enhancement and / or distends the body or organ cavity without constant leakage of the medium or the resulting need to constantly or repeatedly infuse additional medium. The medium is designed to have sufficient viscosity or consistence initially to remain in the body or organ cavity for a time generally sufficient to complete the procedure, and then to facilitate easy removal or expulsion from the cavity, preferably by liquefying or losing viscosity. The phase or viscosity change may be triggered by a variety of factors that liquefy or otherwise facilitate easy removal or expulsion of the composition from the cavity.

The invention discloses a biliary tract internal drainage tube carrying radioactive particles, which relates to the technical field of medical equipment and is a biliary tract internal drainage bracket capable of bearing a micro radioactive particle source. The biliary tract internal drainage tube comprises a drainage tube and a fixing barb, and is characterized in that: an organ cavity container is arranged on the inner wall of the drainage tube; organ cavity chambers are arranged in the organ cavity container. Each organ cavity chamber is separated by a one-way valve; and a marking point is arranged on each organ cavity chamber and made from a radiopaque material. An antiskid fixing barb is arranged outside the tube wall of the drainage tube; and radioactive particles which can be changed anytime are put in corresponding organ cavity chambers according to the position of the drainage tube inserted into the focus. The biliary tract internal drainage tube disclosed by the invention has the advantages of novel structure, low cost, safety, reliability, obvious curative effect and the like, and is simple to process, convenient to use and easy to operate, thereby being a novel biliary tract internal drainage tube carrying radioactive particles integrating economy and practicability.

The present invention relates to a particularly convenient medium for providing contrast enhancement and / or distension of the subject body or organ cavity during imaging, radiographic, visualization, or other similar medical examinations, including ultrasound, endoscopic examinations, MRI, x-ray, hystero-salpingograms, CT scans, and similar procedures. The present invention provides the contrast enhancement and / or distends the body or organ cavity without constant leakage of the medium or the resulting need to constantly or repeatedly infuse additional medium. The medium is designed to have sufficient viscosity or consistence initially to remain in the body or organ cavity for a time generally sufficient to complete the procedure, and then to facilitate easy removal or expulsion from the cavity, preferably by liquefying or losing viscosity. The phase or viscosity change may be triggered by a variety of factors that liquefy or otherwise facilitate easy removal or expulsion of the composition from the cavity.

The present invention consists of an illumination apparatus capable of being attached to surgical instruments, and providing a better illumination of the operating field during surgical procedures. The illumination apparatus comprises a light source (1), such as a LED, connected to a power supply source (2). The light source (1) and part or all of the power supply source are housed in a purpose built casing (3). Said casing (3) has at least one attaching means (5) on its outer surface which is suitable for removably attaching the illumination apparatus to a surgical instrument, being removed and re-attached to another. In a preferred embodiment of the invention, said at least one attaching means (5) is a magnet. These attaching means allow for an easy attachment and removal of the illumination apparatus to several different surgical instruments during a particular surgical procedure. They also allow for the position of the illumination apparatus to be easily shifted along the surgical instrument. Due to its weight, design and size, the illumination apparatus of the present invention does not interfere with the normal use of the surgical instruments. Said present invention is aimed exclusively at open-air surgeries and in particular those in which it is necessary to obtain a good illumination of normally poorly illuminated organ cavities.

An illumination apparatus is attachable to surgical instruments, and provides illumination of the operating field, particularly those requiring good illumination of normally poorly illuminated organ cavities, during surgical procedures. The illumination apparatus includes a light source (1) connected to a power supply (2). The light source (1) and part or all of the power supply source are housed in a casing (3) that has at least one attaching means (5) on its outer surface which is suitable for removably attaching the illumination apparatus to a surgical instrument, and desirably, to several different surgical instruments at various times during a particular surgical procedure. Due to its weight, design and size, the illumination apparatus allows for easy shifting of the illumination apparatus along the surgical instrument without interfering with the normal use of the surgical instruments.

The invention provides an organ cavity wall expanding method, comprising following steps: obtaining the mask and a centre line of an organ; initializing light direction of the points on the centre line, judging whether the mask has adhesion, if the mask has the adhesion, removing the adhesion; dividing the connected domain in the mask into a plurality of lamellas; solving the main directions namely a first direction, a second direction and a third direction of the lamellas in a three-dimensional coordinate system; solving the initial normal vector and the initial tangent vector of the points on the centre line; assigning the projection result of the initial normal vector in the plane in which the first direction and the second direction are located to the normal vector in the light direction, assigning the third direction or the reverse direction of the third direction to the tangent vector in the light direction; sampling the cavity wall according to the center line and the light direction obtained in the steps, mapping the sampling result to a two-dimensional plane to generate a cavity expanded two-dimensional view. The expanding effect of the cavity wall is improved through the settings.

The invention provides an organ model body, a preparation method and application thereof in preparation of a resectoscope resection training model, and relates to the technical field of medical teaching molds. The organ model body comprises a simulated organ cavity and a simulated organ pipeline, wherein one end of the simulated organ pipeline is connected with a closed passage of the simulated organ cavity, and meanwhile, the simulated organ cavity is mainly prepared from the heart of a livestock animal, so that the operation touch feeling and the force feedback of a doctor in minimally invasive surgery training are ensured, and the effect that a training scene is more real is achieved; moreover, the livestock animal heart serving as an in vitro animal organ has the advantages of being convenient to obtain, economical and practical. Therefore, the organ model body not only saves investment of places, cost, labor and the like, but also can routinize minimally invasive surgery training,ensures that doctors can perform repeated training for many times, and achieves sufficient skill proficiency.

The invention relates to an accessory device for organ intracavity operations, in particular to a ureter lead-in sheath with real-time pressure detection and absorption capacity. The ureter lead-in sheath comprises a pouring connector, a sealing cover, a suction pipeline, a pressure sensing passageway and a ureter sheath pipeline. The sealing cover is arranged at one end of the pouring connector. The ureter sheath pipeline is arranged at the other end of the pouring connector. The suction pipeline is arranged on the side face of the pouring connector and is communicated with a pouring passageway in the pouring connector. A pouring pressure sensing passageway is arranged in the side walls of the pouring connector and the ureter sheath pipeline. The portion, on one side of the pouring connector, of the pouring pressure sensing passageway is connected with the pressure detection connector which can be connected with an external pressure sensor. A pressure coupling hole is formed in the portion, on one side of the ureter sheath pipeline, of the tail end of the pouring pressure sensing passageway. The ureter lead-in sheath is easy to implement and convenient to operate and use; when a sheath pipeline works, pressure inside organ cavities can be detected all the time through the pressure detection passageway, it is avoided that patients are damaged when the intracavity pressure is too large, and the ureter lead-in sheath is suitable for popularization.

An anti-aspiration device for a medical tube may comprise of at least one expandable / extendable membrane that once inserted within the cavity of an organ, will abut against interior walls of the cavity of the organ thereby creating a seal to reduce aspiration. One alternate embodiment may comprise of at least two membranes. Another alternate embodiment may comprise of a membrane configured to conform to the boundaries of the interior walls of the cavity of the organ. The device may include sensors and alert system to further enhance the attention towards needed adjustment or removal of the medical tube.

The invention discloses a variable-rigidity part suction device and a plate suction bending method. The plate suction bending method includes the steps that firstly, plate rigid suction and positioning are conducted; secondly, plate transferring is conducted; thirdly, plate flexible suction is conducted; and fourthly, bending and deviation compensation are conducted. The part suction device comprises a flexible organ cavity, an electromagnet, a connecting rod and a vacuum pump. The flexible organ cavity comprises an annular sucker, a flexible telescopic side wall and a top plate, and the flexible organ cavity is defined by the annular sucker, the flexible telescopic side wall and the top face. The electromagnet is arranged in the flexible organ cavity. One end of the connecting rod is connected with a robot wrist, and the other end of the connecting rod stretches in the flexible organ cavity from a center hole in the top face and is fixedly connected with the electromagnet. By means ofthe variable-rigidity part suction device and the plate suction bending method, the vacuum sucker and the electromagnet are ingeniously and organically combined, on one hand, the size is small and can be suitable for bending machining of small parts or trepanning of small parts or the like; and on the other hand, the suction speed is high, and the automation efficiency is high.

The invention relates to a lighting device (100), which is equipped for fastening to a surgical instrument (200) or, by means of adapter (90; 91), to a body part (92), in particular a finger of a surgeon or of an operating room assistant, in order to serve as a light source during a surgical operation, in particular within a body cavity or organ cavity of genuine or traumatic origin and in other body regions that are difficult to access. At least one pin (20) pointing outward from the wall of the housing (10) is arranged on the housing (10) of the lighting device (100) in a wall area (30) directed toward the surgical instrument in the fastening position, which pin has a light outlet opening (40) at the distal end of the pin and is designed for passing through an opening (220) of the surgical instrument or of the adapter (90; 91) and thus establishing a form-closed or force-closed connection to the opening. The pin (20) is preferably movable in order to achieve optimal illumination of the operation site. The invention further relates to a surgical instrument suitable for accommodating the lighting device (100) and a set comprising the lighting device (100) and at least one surgical instrument.

A drug-delivering medical device for delivering a drug to a target site in a human body is disclosed. The drug-delivering medical device may have a hydrophilic surface, with one or more portions of the hydrophilic surface coated with one or more nano-carriers bearing one or more drugs. Each nano-carrier may include a drug surrounded by an encapsulating medium. As the drug is surrounded by the encapsulating medium, the surface of each nano-carrier can be devoid of the respective drug. A non-implantable medical device coated with nano-carriers can deliver one or more drugs to a blood vessel, organ cavity, sac, capsule, lining, layer, coating, membrane, connective tissue, fluid surrounding an organ, and so forth.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.

The present invention relates to a combined ultrasound and endoscopy system. The combined ultrasonic and endoscopy system includes a cannulawith a distal tip configured for insertion into an internal organ or other internal body structure. The distal tip is configured to include both an ultrasound probe head and a camera module. The ultrasonic and direct vision endoscopy images can be simultaneously displayed to a user on a display monitor. The ultrasound probe head can be rotated and steered to scan any location in the human organ cavity. The ultrasound probe can be re-usable or single use. The endoscopy system can be configured with a handheld portion that includes a re-usable handle portion and a single use portion that is configured to be disposed of following a single use. The system can also be configured using a conventional re-usable endoscope with working channels and an endoscopy processing tower system.

The invention discloses a method which can test the noise spot. The method is suitable for testing the noise spot in the course of three-dimensional mapping of human body organ cavity and avoids that a built geometric module distorts because of the existence of the noise spot. The technical proposal is that the method comprises: three-dimensional location informations Pi (xi, yi, zi); of a plurality of sampling points are collected; a sampling point P0 is selected at random as an analysis suspicious sample point; a group of near points P1, P2, P3 to Pn which are close to the suspicious sample point P0 is selected; wherein, n is a natural number which is greater than one; the central point G of the near points is calculated, the distance k1 from the suspicious point P0 to the central point G is measured, the vector from the suspicious point P0 to the central point G is measured, the angle relationship k2 of the vectors from the suspicious point P0 to each near point is measured, and the density degree k3 among the near points is measured: according to the distance k1, the angle relationship k2 and the density degree k3, the suspicious point P0 is judged whether the suspicious point P0 is a noise spot. The method is applied in the field of three-dimensional mapping of the human body organ cavity.

The invention relates to an accessory device for organ intracavity operations, in particular to a ureter lead-in sheath with real-time pressure detection and absorption capacity. The ureter lead-in sheath comprises a pouring connector, a sealing cover, a suction pipeline, a pressure sensing passageway and a ureter sheath pipeline. The sealing cover is arranged at one end of the pouring connector. The ureter sheath pipeline is arranged at the other end of the pouring connector. The suction pipeline is arranged on the side face of the pouring connector and is communicated with a pouring passageway in the pouring connector. A pouring pressure sensing passageway is arranged in the side walls of the pouring connector and the ureter sheath pipeline. The portion, on one side of the pouring connector, of the pouring pressure sensing passageway is connected with the pressure detection connector which can be connected with an external pressure sensor. A pressure coupling hole is formed in the portion, on one side of the ureter sheath pipeline, of the tail end of the pouring pressure sensing passageway. The ureter lead-in sheath is easy to implement and convenient to operate and use; when a sheath pipeline works, pressure inside organ cavities can be detected all the time through the pressure detection passageway, it is avoided that patients are damaged when the intracavity pressure is too large, and the ureter lead-in sheath is suitable for popularization.

The invention discloses a method for reconstructing three-dimensional surface of human organs and a system thereof, aiming to solve the problems in the prior cavity surface reconstruction method, including rough reconstruction surface and inability to reconstruct surface of multi-furcate complex organ cavity. The method comprises the following steps of collecting spatial position information of aplurality of points on the surface of an organ; adding one or more restriction points containing spatial position information; constructing and solving a function according to the spatial position information at the sampling point and the restriction points; and performing isosurface extraction of all points with the same functional value of the sampling point to obtain a reconstructed surface ofthe organ. The inventive method and system can accurately reconstruct the surface model of multi-furcate complex organs, and can obtain smooth surface model, which nearly approaches to the geometry ofthe original cavity.

The invention provides a medical catheter which comprises a catheter body and a head located at the far end of the catheter body and connected with the catheter body, and the head comprises a net-shaped flexible tube structure and a plurality of electrodes arranged on the net-shaped flexible tube structure. The net-shaped flexible pipe structure comprises an annular flexible pipe and a plurality of linear flexible pipes, at least two ends of each linear flexible pipe are connected to the annular flexible pipe, and the linear flexible pipes do not intersect with one another. The head is of a net-shaped flexible tube structure and can deform according to different shapes of organ cavities, electrodes can be well attached to tissues while internal signal conduction is kept, and therefore an arrhythmia origin point is well positioned, a catheter is guided to a diseased region, and the digestion and fusion effect is improved. Besides, due to the net-shaped structure of the head part, high-density electrode arrangement can be adopted on the surface of the head part, so that the mapping and ablation integrated effect can be achieved, the operation convenience is improved, and the risk in the operation process is reduced.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.

The invention discloses a biliary tract internal drainage tube carrying radioactive particles, which relates to the technical field of medical equipment and is a biliary tract internal drainage bracket capable of bearing a micro radioactive particle source. The biliary tract internal drainage tube comprises a drainage tube and a fixing barb, and is characterized in that: an organ cavity container is arranged on the inner wall of the drainage tube; organ cavity chambers are arranged in the organ cavity container. Each organ cavity chamber is separated by a one-way valve; and a marking point is arranged on each organ cavity chamber and made from a radiopaque material. An antiskid fixing barb is arranged outside the tube wall of the drainage tube; and radioactive particles which can be changed anytime are put in corresponding organ cavity chambers according to the position of the drainage tube inserted into the focus. The biliary tract internal drainage tube disclosed by the invention has the advantages of novel structure, low cost, safety, reliability, obvious curative effect and the like, and is simple to process, convenient to use and easy to operate, thereby being a novel biliary tract internal drainage tube carrying radioactive particles integrating economy and practicability.