15 results about "Existing catheter" patented technology

The utility model relates to the technical field of catheter sheath regulation and control, especially a sheath type regulation and control device applied to disposable catheter sheaths, which comprises an external assembly frame, a turnover closing cover plate is installed on the assembly surface of the external assembly frame, an internal assembly groove for installing the disposable catheter sheath is arranged on the assembly surface of the external assembly frame and the turnover closing cover plate, and an external adjustment frame is installed on the side wall of the external assembly frame through a flexible connecting belt. The sheath type regulation and control device applied to the disposable catheter sheath adopts a sheath type structure design, can be directly sleeved on the existing catheter sheath, and is very simple and convenient to assemble and disassemble. The external adjustment frame is installed on the side wall of the external assembly frame through the flexible connecting belt, the external adjustment frame is sleeved on the external catheter, and then the flow or temperature of the catheter is adjusted by the hand control adjustment module inside the external control port, so that the operation is very simple and convenient.

A method and apparatus for generating a customized cardiovascular catheter shape based on an individual patient anatomy is disclosed. As a result, the on-demand shaping of the custom catheter can be done in the context of a cardiovascular catheter procedure. This can also allow an existing catheter to be reshaped and used even for patient populations with unique or extreme anatomy or with anatomy that is not common for the type of surgery being performed.

The invention provides a medical delivery catheter in the technical field of medical instruments, the medical delivery catheter comprises a delivery catheter layer and a delivery catheter section, the delivery catheter layer comprises a delivery layer, a support skeleton layer and a protective layer, and the delivery catheter section comprises a bidirectional bending adjustment section, a bending adaptation section and a straight section support section. A conveying layer, a supporting framework layer and a protective layer are sequentially arranged on each of the two-way bending adjusting section, the bending adapting section and the straight supporting section from inside to outside, and the supporting framework layers on the two-way bending adjusting section, the bending adapting section and the straight supporting section are of hollow mesh structures. The hollow mesh structures with bending elasticity are adopted on the supporting framework layers on the two-way bending adjusting section, the bending adapting section and the straight supporting section, existing woven wire structures in the current market are replaced, higher supporting performance and torsion resistance are provided for the catheter, the technical problem that an arch back exists on an existing catheter can be solved, and the catheter has the advantages of being simple in structure and convenient to use. And meanwhile, the problem that the pushing force is insufficient in the advancing process of the catheter can be solved.

The utility model discloses urethral catheter fixing shorts convenient to put on and take off, belongs to the technical field of medical supplies, and solves the problem that existing urethral catheter fixing shorts are inconvenient to put on and take off. The trousers comprise a left trouser piece, a bottom trouser piece, a right trouser piece and a cover piece, the left side and the right side of the bottom trouser piece are fixedly connected with the left trouser piece and the right trouser piece respectively, the cover piece is fixedly connected to the lower side of the bottom trouser piece, and leg openings are formed in the joints between the left trouser piece and the bottom trouser piece and between the right trouser piece and the bottom trouser piece. The left trouser piece and the right trouser piece are folded along the central axis of the bottom trouser piece and then are connected and closed through a zipper or a button to form the triangular shorts, the cover piece is folded upwards to cover the butt joint position of the left trouser piece and the right trouser piece, and the cover piece is connected with the left trouser piece and the right trouser piece through hook-and-loop fasteners. And a first tunnel fixer is arranged on the left trouser piece or / and the right trouser piece. The urethral catheter fixing shorts can fix the urethral catheter, and meanwhile the urethral catheter fixing shorts are more convenient to put on and take off.

A catheter (100, 200, 600, 700) capable of being inserted into the urethra for placement in a user's bladder and urethra, the catheter comprising: a urinary conduit (102, 202, 602, 702, 802) including a first urinary inlet (104, 214, 614, 714, 814) and a urinary outlet (106, 206); and an inlet protector (216, 316, 616, 716, 816) extending outwardly from the urinary conduit from a location between the first urinary inlet and the urinary outlet. The inlet protector is used to protect the urinary inlet by isolating it from the bladder wall and thus preventing it from contacting tissue. In existing catheters, the process of emptying the bladder can cause tissue to be drawn from the bladder wall into the urinary inlet. Tissue may become lodged in the catheter, obstructing the inlet, and the tissue may also be damaged by the process. Additionally, small pieces of tissue may become trapped within the catheter, causing blockages and biofouling, thus reducing flow rate. A high flow rate is better because it flushes out any dirt or urinary deposits from the catheter. Lower flow rates are less effective, allowing deposits to accumulate more quickly and increasing the risk of infection, thus reducing the time the catheter remains in place. An inlet protector positioned between the urine inlet and outlet, extending outwards from the urinary conduit (i.e., keeping the urine inlet away from the urethral opening and bladder), maintains a slight separation between the urine inlet and bladder wall tissue and thus ensures a good flushing flow rate and reduces the risk of biofouling.

The invention discloses a rat parotitis model construction method based on general anesthesia and parotid gland directional injection, which belongs to the technical field of biology and comprises the steps of animal preparation, anesthesia, disinfection incision exposure, LPS injection and postoperative care. The method has the advantages that the parotid gland is directly exposed by adopting a longitudinal incision of the cheek, 2mg / mL LPS (0.2 mL and depth of 2mm) is injected, microscope positioning is not needed, the operation is simple and convenient, inflammation is limited to the parotid gland, pathological characteristics (alveolar injury, inflammatory infiltration and saliva reduction) are consistent with those of clinical application, the success rate is greater than or equal to 90%, and compared with an existing catheter injection method, the method is high in repeatability, less in interference and suitable for disease mechanism research and drug screening.

The invention discloses a radio frequency closed catheter and a manufacturing method thereof, and relates to the technical field of medical instruments.The radio frequency closed catheter comprises an inner film, the inner film is composed of a left section and a right section, a heating wire is wound on the outer surface of the right section of the inner film, a spiral coil is wound on the outer surface of the left section of the inner film, and the outer surface of the spiral coil is wrapped with a woven mesh; and outer membranes are arranged on the outer surfaces of the woven mesh at the left section and the heating wire at the right section of the inner membrane. Due to the existence of the metal ring net, the catheter is not easy to fold to form creases in use so as to influence use, and compared with an existing catheter adopting a PI (Polyimide) or PEEK (Polyether Ether Ketone) tube design, the whole structure is smaller in bending radius, low in rigidity, easy to push in tortuous veins, large in internal aperture, and capable of supporting thrombus aspiration or passing through other required instruments such as guide wires; meanwhile, the liquid injection function can be achieved through the guide pipe, the low-impedance copper-nickel flat wire heating body is suitable for low-voltage driving equipment, and the safety performance is higher.

This utility model discloses a pressure-reducing multi-catheter fixation dressing, comprising a pressure-reducing dressing body and non-woven adhesive tape. A through groove is formed in the middle of the pressure-reducing dressing body; an easy-tear perforated line is provided from the center of the bottom edge of the through groove to the center of the bottom edge of the pressure-reducing dressing body; several strips of non-woven adhesive tape are adhered to the back of the TPU film in the pressure-reducing dressing body. This pressure-reducing multi-catheter fixation dressing has a simple structure and is easy to use. It can conveniently and securely place one or more catheters and is suitable for catheters of different sizes, solving the problem that existing catheter fixation devices are difficult to use with catheters of different sizes. It meets the need for stable fixation of multiple catheters in medical procedures, facilitates the management of multiple catheter lines, and further enhances the fixation stability of the catheters by applying two intersecting adhesive strips to the pressure-reducing gel, preventing slippage. The elasticity of the adhesive strips, adhesive tape, and adhesive tape prevents catheter flattening, making it economical and practical.

The invention relates to the technical field of PICC (peripherally inserted central catheter), and aims to solve the problem that an existing catheter is likely to fall off in the using process. The invention provides a device for solving the technical problems that PICC (Peripherally Inserted Central Catheter) is used for conveying PICC, and obstructions can be incompletely dissolved and incompletely sucked, the device comprises a dredging structure, a catheter and a dredging guide wire, and further comprises a double-layer locking structure arranged at the joint of the dredging structure and the catheter; and the sectional type pressing evacuation structure is arranged on the outer wall of the catheter in a sleeving manner and is connected with the double-layer locking structure. A double-layer locking structure is arranged to lock the blocked connector of the catheter and the three-way pipe, and falling off in the using process is avoided; the blocking objects are pressed and segmented by arranging the segmented pressing and evacuating structure, so that a channel is formed between the blocking objects, a dissolving agent is in full contact with the blocking objects, and the situation that the blocking objects are not completely dissolved and not completely sucked is avoided.

The application discloses a kind of conduit stereoscopic shaping device and its shaping method, by being arranged in the axial through heating groove, cooling groove and being located in the heart of molding groove on the two end surfaces of stereoscopic plastic device main body, and cooling groove is located in the radial outer side of heating groove, both are spaced apart with multiple along the circumference, condenser or air pipe is installed in cooling groove;Several screw holes for loading adjusting rod are opened on the side wall of stereoscopic plastic device main body, and screw hole passes through heating groove, cooling groove and reaches molding groove and is arranged with multiple layers along the axial direction on the side wall, and each layer screw hole is spaced apart with multiple along the circumference and is equipped with adjusting rod one by one, and adjusting rod is symmetrically distributed in pairs on the side wall, can be adjusted in real time to the molding angle of conduit in molding process, solve the problem that existing conduit molding mold cannot be adjusted again once determined and existing technology can only be plane shaped, so that conduit can be more matched with human body cavity, more easily make conduit reach surgical area quickly.

The invention belongs to the technical field of medical protective clothing, and discloses a protective clothing special for a central venous catheter, which comprises a hospital gown jacket, the front side of the hospital gown jacket is provided with a first opening and a second opening, the first opening of the hospital gown jacket is provided with a cover plate, and the cover plate is used for exposing or covering the first opening; a fixing piece is arranged at the position of the second opening of the hospital gown jacket, one side of the fixing piece is fixedly connected with the upper side of the second opening, the fixing piece is provided with a plurality of child fixing pieces in the width direction of the hospital gown jacket, and the lower side of the second opening is provided with mother fixing pieces matched with the fixing pieces. An elastic band is connected below the second opening; a catheter containing bag is arranged on the inner side of the upper garment of the hospital gown, an opening is formed in the upper portion of the catheter containing bag, and the position of the catheter containing bag corresponds to the first opening and the second opening. The catheter fixing adhesive tape solves the problems that an existing catheter fixing adhesive tape is prone to slipping, poor in pasting stability and prone to adhesive tape anaphylaxis.

The invention discloses an intelligent urine collecting device for urology department nursing, relates to the technical field of medical instruments, and aims to solve the technical problem that a patient is in a pathological urination mode for a long time due to the fact that an existing catheter cannot recognize and intervene detrusor sphincter coordination disorder in real time. One end of the catheter arranged in the bladder is provided with a catheterization port and an annular cavity, and the other end of the catheter is provided with an inflation extension tube communicated with an air source; the annular balloon is formed by expanding the annular cavity under the influence of an inflating medium; the inflating hole is formed in the catheter main body and is used for communicating the inflating extension tube with the annular cavity; the air bag internal pressure sensor is fixed on the inner wall of the annular cavity; a dual-pressure real-time monitoring system is constructed, and pressure change signals of detrusor contraction and sphincter areas in the urination period are accurately collected. The defect that the coordination state of the detrusor muscle and the sphincter cannot be sensed in the prior art is overcome, and therefore the upper urinary tract injury risk is effectively reduced.

The utility model relates to the technical field of medical supplies, in particular to an anti-falling catheter which comprises a catheter body and a urine collecting bag connected to the tail end of the catheter body, a rotary fastening component is movably connected between the catheter body and the urine collecting bag, and one end of the catheter body and one end of the urine collecting bag are respectively inserted into the rotary fastening component. The rotary fastening assembly comprises a connecting sleeve, a buckling piece and a locking piece, a hollow cavity structure is arranged in the connecting sleeve, a liquid level float switch used for detecting the liquid level of the urine collecting bag is arranged in the cavity of the connecting sleeve, and the liquid level float switch is communicated with the connecting port of the urine collecting bag; the buckling piece is detachably connected into a cavity, close to one end of the pipe body, of the connecting sleeve, and a plurality of clamping blocks are circumferentially distributed on the inner wall of the buckling piece. According to the urine bag, the problem that an existing catheter is prone to slipping to cause urine leakage is solved, meanwhile, the catheter can be automatically closed after the urine bag is full of urine, and the problem that urine flows back to cause urinary tract infection is solved.

The invention relates to the technical field of medical instruments, in particular to a catheter for vascular intervention and a preparation method thereof. The catheter comprises a catheter body, wherein the outer surface of the catheter body is coated with a hydrophilic coating; the catheter body comprises a near-end section and a far-end section; a micro-bulge array is arranged on the outer surface of the near-end section; the far end of each micro-bulge unit in the micro-bulge array is fixedly connected with the tube body, and the near end of each micro-bulge unit in the micro-bulge array is a free end tilting towards the outer side of the tube body; the micro-bulge units are provided with asymmetrical section contours and form a main body inclined surface facing the far end of the catheter; the outer surface of the micro-bulge array and the other outer surfaces of the tube body are continuously covered by the hydrophilic coating; when the near-end section slides relative to a restraining face in the axial direction of the near-end section, the sliding friction coefficient of the near-end section sliding towards the near end is larger than the sliding friction coefficient of the near-end section sliding towards the far end. The technical contradiction between anchoring stability and pushing smoothness of an existing catheter for vascular intervention is solved.

The invention discloses a medical grade PEBAX composite catheter material with low friction and thermal stability, and relates to the field of medical catheter materials, the medical grade PEBAX composite catheter material comprises a base material, and the base material comprises a pre-modified PEBAX base material, a composite functional additive and a ternary photo-thermal stabilizer. According to the medical-grade PEBAX composite catheter material with low friction and thermal stability, the medical-grade PEBAX composite catheter material is prepared through multi-dimensional innovation of base material pre-modification, lubricating-antibacterial synergistic additive design, ternary photo-thermal stabilizer compounding and whole-flow process optimization; the technical problems that an existing PEBAX catheter material is insufficient in lubricity, poor in thermal stability, lack of an antibacterial function and poor in multi-performance synergism are systematically solved. The material has low friction, high thermal stability, long-acting antibacterial property and excellent biocompatibility, all performance indexes are superior to those of the prior art, and the preparation process is suitable for large-scale industrial production, can be widely applied to high-end medical tubes such as interventional catheters and anesthesia catheters, and has remarkable medical industry application value and market prospect.