22 results about "Tissue expansion" patented technology

The invention relates to the technical field of medical information management, and discloses a skin soft tissue dilatation water injection period intelligent management system and method, and the system comprises a data collection module which obtains a patient shot image, a symptom self-report and a compliance record, and calls electronic medical record information; the feature extraction module is used for extracting expansion region features and skin features of the shot image, generating expansion change trend features and skin evolution state features in combination with historical expansion region features and historical skin features, and obtaining dynamic features; the risk prediction module integrates the dynamic characteristics, the symptom self-report, the compliance record and the electronic medical record information, and outputs a risk level through a complication risk prediction model; and the intelligent decision-making module is used for generating a personalized intervention scheme based on the risk level and a preset clinical rule base. The method can solve the problems that the patient in the water injection period of the skin soft tissue dilatation is insufficient in out-of-hospital monitoring, medical staff cannot continuously and objectively perceive dynamic changes and the like, and the complication risk prediction accuracy and efficiency are improved.

An orthopedic implant kit comprising a lockable poly-axial screw, a tissue dilatation sleeve, a screw driver, a screw extender, a rod, rod-reduction device, a set screw driver, a torque limiting device and a screw releasing device.

The utility model discloses a tissue expansion system for craniocerebral surgery, which relates to the technical field of medical instruments and comprises an outer tube, an inner tube, a clamping component and a fastening component, and the tail end of the inner tube extends out of the tail end of the outer tube; a clamping handle is arranged at the top end of the outer pipe, and a clamping hole is formed in the clamping handle; a bearing part is arranged in the inner pipe, and a first through hole is formed in the bearing part; the clamping assembly is arranged on the bearing part and comprises a pressing piece and a first elastic piece, a second through hole is formed in the pressing piece, and a first pressing part is arranged on the outer side of the pressing piece; the fastening assembly comprises a main body and a clamping piece, the main body is arranged above the clamping assembly, a third through hole is formed in the main body, and the clamping piece is clamped with the clamping hole; the first through holes and the second through holes are arranged in a staggered mode, and the first through holes and the third through holes coincide. According to the tissue expansion system, effective expansion of a soft tissue incision is achieved, an endoscope pipeline can freely stretch out and draw back in the inner pipe and can be rapidly clamped, damage to the soft tissue incision is smaller, and disassembly, assembly and cleaning are convenient.

A tissue expansion sleeve comprising a tube formed of woven polymer; the woven polymer forming helical trusses; and a biologically active material disposed on an outer surface of the tube.

The invention relates to the technical field of medical instruments, in particular to a tissue expansion catheter with a fixing structure. Comprising an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, the end of the outer pipe is fixedly connected with a communicating piece fixedly connected with the inner pipe, the communicating piece is fixedly connected with an outer expansion cylinder and an inner expansion cylinder, the outer expansion cylinder, the inner expansion cylinder and the inner expansion cylinder jointly form a filling cavity, and the inner expansion cylinder is fixedly connected with inner supporting bodies which are annularly distributed and make contact with the inner pipe. The side, away from the inner pipe, of the inner supporting body penetrates through the expansion inner cylinder and is provided with two sets of protrusions which are symmetrically distributed. The inner side of the expansion outer cylinder is pulled by the protrusions, so that pits are formed in the expanded surface of the expansion outer cylinder, then when the expansion outer cylinder expands and extrudes a lesion position, lesion tissue is embedded into the pits in the surface of the expansion outer cylinder, sliding of the expansion outer cylinder due to extrusion is restrained, and the expansion effect is improved. Meanwhile, the surface smoothness of the expansion outer cylinder in the folded state is kept, and movement of the expansion outer cylinder in the body of the patient is facilitated.

The present application relates to the technical field of medical devices, in particular to a tissue expansion catheter with a fixing structure. The tissue expansion catheter comprises an outer tube and an inner tube, the inner tube is arranged in the outer tube, the end of the outer tube is fixedly connected with a communication member fixedly connected with the inner tube, the communication member is fixedly connected with an expansion outer cylinder and an expansion inner cylinder, and the three members together form a filling cavity, the expansion inner cylinder is fixedly connected with an inner support body which is annularly distributed and in contact with the inner tube, and the side of the inner support body away from the inner tube penetrates through the expansion inner cylinder and is provided with two groups of protrusions which are symmetrically distributed. The present application utilizes the protrusions to pull the inner side of the expansion outer cylinder, so that the surface of the expansion outer cylinder after expansion generates a pit, and then when the expansion outer cylinder is expanded and pressed at a lesion position, the lesion tissue is embedded in the pit on the surface of the expansion outer cylinder, thereby inhibiting the sliding of the expansion outer cylinder caused by the pressing, and at the same time maintaining the smoothness of the surface of the expansion outer cylinder in the retracted state, which is beneficial to the movement of the expansion outer cylinder in the patient's body.

Methods and apparatus disclosed treat pain and mobility impairments by applying controlled subatmospheric pressure to skin over muscle tissue or joints during volitional muscle contractions against adaptive therapist resistance. Domes with basal openings sealing against skin perimeters, are evacuated to 13-90% of atmospheric pressure. Some embodiments have 3-10 second contraction intervals repeated at least three times per subatmospheric treatment cycle, before pressure is ramped to ambient pressure over at least 2 seconds. Results are improved range of motion, muscle strength, and pain reduction. Apparatus embodiments include vacuum manifolds, sensors for pressure and tissue distension, and optional integrated electrodes for performing TENS / STIM.

A surgical access system comprising a tissue dilation assembly and a tissue retraction assembly, both of which may be equipped with one or more electrodes for use in detecting the existence of (and optionally the distance and / or direction to) neural structures.

The utility model discloses an operation tool for implanting an ulnar radial fibular intramedullary nail, which comprises a right shearing force type rod, a left shearing force type rod, internal thread short tubes, a stretching-in type rod, an arc-shaped side block, a short shaft, a short roller and a placing groove, and the internal thread short tubes are arranged at one end of the right shearing force type rod and one end of the left shearing force type rod; the two ends of the inner side of the arc-shaped side block are each provided with a containing groove, and a short roller is arranged in each containing groove. According to the utility model, the structural design is reasonable, the stretching-in type rod in not limited to one shape is in threaded connection with the internal thread short pipe positioned at one end of the left shearing force type rod, so that the stretching-in type rods in different shapes can be connected and fixed, meanwhile, the two stretching-in type rods are separated and combined to play a role in expanding tissues, and the nail has the functions of clamping a nail body, clamping the nail body and expanding the nail body. Meanwhile, the rotating property of the screw body during screwing is ensured; and the four short rollers distributed in a matrix are close to the surface of the nail body, so that a guide positioning structure is formed, and the accuracy of the mounting position of the nail body is ensured.

A system for ablating surface tissue of a patient is provided. The system includes a console and an ablation catheter fluidly attached to the console. The console includes an ablative fluid supply, a neutralizing fluid supply, an injectate fluid supply, a pump assembly, and a vacuum supply. The ablation catheter includes an expandable functional assembly, a tissue expansion subsystem for expanding sub-surface tissue in the intestine of the patient, and a tissue ablation subsystem for ablating surface tissue in the intestine of the patient. Methods of ablating surface tissue are also provided.

This invention provides a device for external expansion of soft tissue on one side of the face, comprising pairs of spaced-apart fixators, with multiple supports connected between each pair of fixators, and at least one end of each support slidably connected to a fixator. Each support is equipped with at least one elastic traction device, which is equipped with a negative pressure suction cup. In this invention, by adjusting the positions of the supports and the elastic traction device, the negative pressure suction cup periodically applies mechanical traction before surgery, causing local tissue expansion and relaxation. This mechanically induces and stimulates cell regeneration, gently expanding the soft tissue volume and providing space for subsequent filling.

A tissue-separating device, system, and method utilizing an expandable member which expands against tissue to be separated at a treatment site. The expandable member has an invertible portion extendable within and evertible out of a lumen of a tubular elongate member. An anchoring portion of the expandable member is anchored with respect to an exterior of the tubular elongate member to anchor the device with respect to the treatment site so that expansion of the expandable member against tissue does not cause rebound of the expandable member. The tubular elongate member may include one or more radially extending flow holes to inflate the anchoring portion prior to everting and expanding the invertible portion of the expandable member. A tether may be used to assist advancement and retraction of the invertible portion of the expandable member. The tether may define a lumen through which an additional device may be extended.

A multi-stage dilator and cannula assembly for use in surgical procedures, including minimally invasive surgical procedures, to provide tissue dilation and opening of a portal to enable the surgeon to access and provide treatment to anatomical feature of interest.

The invention discloses a 3D printing cavernous body organ-like model capable of simulating an erectile physiological process, and belongs to the technical field of tissue engineering and regenerative medicine. The hydrogel is formed by photo-curing 3D printing of a dual-network hydrogel material formed by blending a pig cavernous body acellular extracellular matrix pregel solution and polyethylene glycol diacrylate, and has a bionic sine curve expansion structure; micron-sized grooves for guiding the directional arrangement of smooth muscle cells are formed in the surface of the micro-sphere, and an elliptical cavity for providing structural support is formed in the micro-sphere. A pig cavernous body dECM pre-gel solution is used as a base material, so that a microenvironment for living of cells in a body can be effectively simulated; by regulating and controlling the proportion of PEGDA, the mechanical property of the model is matched with that of a natural cavernous body tissue. The organ model can reproduce the NO-mediated smooth muscle cell relaxation and tissue expansion physiological process in vitro, and provides an effective in-vitro platform for researching the pathological mechanism of erectile dysfunction, screening drugs and developing a novel treatment method.

A tissue expander comprising: a port assembly including a drain port and a fill port, a magnet housing assembly fitted to the port assembly, the magnet housing assembly including a single magnet having a magnetic field that is detectable on an exterior surface of a biological tissue of a patient; a shell defining the interior cavity of the tissue expander; and a drain assembly in fluidic communication with the drain port via the drain tubing.

A tissue expander includes a shell defining an interior cavity, a first port in fluid communication with the interior cavity, a second port, and a magnet. The magnet is positioned along an axis extending through the first port and the second port. The magnet produces a magnetic field to enable location of the first port and the second port.

The present invention relates to a puncture device that is arranged for being advanced to a puncture site through the human vasculature, the puncture device comprising: a puncture means, the puncture means comprising a distal end that is arranged for creating a puncture in a patient's tissue, a sheath, the sheath being arranged so as to surround the puncture means, the puncture means being slidably arranged inside the sheath, a tissue expansion means, the tissue expansion means being arranged so that it can be selectively activated, wherein in the activated state, the tissue expansion means pushes away the patient's tissue to thereby allow a re-orientation of the puncture means.

An orthopedic implant kit comprising a lockable poly-axial screw, a tissue dilatation sleeve, a screw driver, a screw extender, a rod, rod-reduction device, a set screw driver, a torque limiting device and a screw releasing device.

The utility model discloses an external nasal dilator, relates to the technical field of human body external tissue dilation, and solves the problems that an external sticker in the prior art is easy to fatigue, causes the reduction of dilation force, is not suitable for long-time use and can only be used once. The dilator comprises a dilation strip, the dilation strip is provided with at least two detachable position-adjustable clamping pieces, the clamping pieces are magnetically attracted with detachable adhesive pieces, the dilation strip is composed of a memory rebound body and can provide stable and lasting dilation force for the nose for a long time, in addition, the dilator is externally used, so that no foreign body sensation exists in the nasal cavity of a user, and the dilator is convenient to use. The positions of the clamping pieces can be adjusted according to different requirements of users, and the clamping pieces can be detached and replaced, so that the expansion strip can be used repeatedly.

A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof, the distal end including an end effector assembly having a pair of opposing jaw members operably coupled thereto. One or both of the jaw members is moveable between open and closed positions for clamping tissue with a closure pressure. One or both of the jaw members connects to a generator that provides energy thereto in accordance with a sealing algorithm upon activation thereof. An anti-backdrive mechanism is coupled to the end effector assembly and includes a drive shaft coupled at one end to a solenoid and another end that engages one of the jaw members upon extension thereof to provide additional closure pressure between the jaw members. The drive shaft is extendible by the solenoid to extend the drive shaft in response to tissue expansion during sealing based on the sealing algorithm.

The invention relates to the technical field of medical detection, and particularly discloses a mixed decalcification solution, a preparation method thereof and application of the mixed decalcification solution in pathological detection. The invention relates to a mixed decalcification solution and a preparation method thereof. The mixed decalcification solution comprises the following raw materials in percentage: 3-5% of formaldehyde, 8-12% of formic acid, 3-5% of acetic acid, 0.8-1.2% of sodium gluconate, 0.3-5% of hydrochloric acid, 0.05-2% of trehalose and the balance of a phosphate buffer solution. The formic acid and the acetic acid are compounded to form a mixed acid system, so that the decalcification liquid has a higher decalcification speed and a certain tissue expansion protection effect, the decalcification process is milder, the damage of hydrochloric acid to antigens in bone tissues is reduced, and the dyeing effect in subsequent pathological detection is ensured. The chelation of sodium gluconate, trehalose and formaldehyde are utilized to protect the integrity of the tissue structure and reduce the damage to the antigen.

A surgical access system comprising a tissue dilation assembly and a tissue retraction assembly, both of which may be equipped with one or more electrodes for use in detecting the existence of (and optionally the distance and / or direction to) neural structures.