29 results about "Hemostatic Valve" patented technology

A system for insertion into a vasculature of a patient is disclosed. The system utilizes a primary tubular sheath body coupled to a distal portion of an intermediate tubular sheath body, and a hub coupled to a proximal portion of the intermediate tubular sheath. The hub may be couplable to a dilator via an interaction between a dilator cap and the hub, and the hub may contain a hemostatic valve with a foam member having one or more visibly identifiably regions.

The present invention relates to apparatus for fluid management in a robotic catheter-based surgical system. A cassette for use in a robotic drive of a catheter-based surgical system includes a housing configured to support a hemostasis valve having a base and a side port. The housing has a longitudinal device axis associated with an elongated medical device. The cassette further includes a first tube connection point on the housing and above the longitudinal device axis. The first tube connection point is configured to receive a first tube. The cassette further includes a second tube connection point near a top edge of the housing and above the first tube connection point and the longitudinal device axis. The second tube connection point is configured to receive a second tube.

This invention discloses a controllable bending catheter and its control handle. The controllable bending catheter has a guidewire in its lumen and a pair of draw wire cavities parallel to the axial direction in its wall thickness. Each of the draw wire cavities contains a traction wire. The distal end of the controllable bending catheter is flexible, and the pair of traction wires have different lengths. The control handle has, from far to near, an end cap, an end cap, a knob tube, a handle cap, a handle cap, and a hemostatic valve. Internally, it contains a core rod and a wire-connecting screw. In this invention, the control handle uses a single-threaded screw, and the pair of traction wires in the controllable bending catheter have different lengths, realizing bidirectional controllable bending of the catheter. Compared with the existing bidirectional controllable bending catheter control handles that use positive and negative double-threaded screws, it has fewer components, lower manufacturing costs, smoother transmission, less effort in bending control, and is easier to produce and assemble.

The embodiment of the present specification provides a hemostasis valve, comprising: a shell provided with a channel and a through hole, wherein the channel is suitable for passing a suction catheter, and the through hole is through the channel and has an included angle; and an execution component, which is partially accommodated in the through hole and is suitable for continuous movement in the through hole to squeeze or release the suction catheter. By using the above scheme, the adaptability, airtightness and convenience can be considered.

Introducer sheath systems including a pressure regulator operably coupled to a hemostatic valve, wherein the pressure regulator includes a chamber filled with a gas that is fluidly isolated from the hemostatic valve. The introducer sheath systems may include a tubular sheath, a hub assembly, and a dilator disposed therein connected to a proximal end of the sheath; the hub assembly including a housing and a hemostatic valve disposed therein; a pressure regulator connected to the hub and in fluid communication with the hemostatic valve; and a sealed chamber defined by the pressure regulator, the chamber having an interior, wherein the interior of the chamber is filled with a gas that is fluidly isolated from the hemostatic valve.

The invention belongs to the technical field of medical instruments, and discloses a catheter sheath and a catheter sheath system. The catheter sheath comprises a catheter sheath tube, a catheter sheath base and a hemostasis valve, the hemostasis valve comprises a shell, a sealing body, an elastic body and an abutting piece, the end, away from the catheter sheath tube, of the catheter sheath base is connected with the shell of the hemostasis valve, then a containing space is defined, and the sealing body and the elastic body are arranged in the containing space; the abutting piece penetrates through the sliding groove of the shell, the elastic body is located between the part, placed in the containing space, of the abutting piece and the sealing body, and when the abutting piece is operated to linearly move along the sliding groove, the abutting piece is close to the catheter sheath base and extrudes the elastic body and the sealing body, so that an inner hole of the sealing body is shrunk, and an existing rotary adjusting mode is replaced with a direct pushing mode. The elastic body is matched, operation is rapid and convenient, the deformation degree of the sealing body can be greatly adjusted, and therefore the use requirements of guide wires and instruments of different sizes are met, and the leakage risk is effectively reduced.

A clinical personal protection equipment (PPE) system, worn by a healthcare provider, that can include a data display and selectively controls medical equipment. The system includes a computer platform that selectively communicates with a network, such as a Wifi network, and selectively communicates with and controls one or more electronic devices, such as an interactive rotating hemostatic valve and Tuohy-Borst adapter. The headset fits about the head of user and includes a face shield. A camera is located on the headset and is in communication with the computer platform, the camera creating visual data of a forward view from the headset and transmitting the visual data to the computer platform.

An introducer for insertion of a medical device into a patient's vasculature includes an elongate introducer body, a hub, and a hemostatic valve. The elongate introducer body includes a longitudinal axis, a proximal region, a distal region, and an inner lumen. The hub is coupled to the proximal region of the introducer body. The hemostatic valve is disposed within the hub and forms a liquid-tight seal across the inner lumen. The introducer includes a guide configured to guide an object towards the center of the valve during insertion of the object.

Introducer sheath systems including a pressure regulator operably coupled to a hemostatic valve, wherein the pressure regulator includes a chamber filled with a gas that is fluidly isolated from the hemostatic valve. The introducer sheath systems may include a tubular sheath, a hub assembly, and a dilator disposed therein connected to a proximal end of the sheath; the hub assembly including a housing and a hemostatic valve disposed therein; a pressure regulator connected to the hub and in fluid communication with the hemostatic valve; and a sealed chamber defined by the pressure regulator, the chamber having an interior, wherein the interior of the chamber is filled with a gas that is fluidly isolated from the hemostatic valve.

The present invention aims to provide a hemostatic valve that enables reliable hemostasis with a simple mechanism and easy operation in procedures using medical devices such as catheters. [Solution] A hemostatic valve for medical use, comprising a body that can be fitted into a cylindrical hub, wherein the body has at least one cylindrical portion penetrating along the longitudinal axis of the body, and a notch penetrating along the longitudinal axis of the body between at least one of the cylindrical portions and the outer edge of the body.

The utility model relates to a double-cavity perfusion catheter which comprises a catheter body, a catheter seat, an end cap, an outer tube and an inner tube, the inner tube is arranged in the outer tube in a penetrating mode, an inner cavity channel is formed in the inner tube, an outer cavity channel is formed between the inner tube and the outer tube, a first hole is formed in the surface of the outer tube, the first hole is communicated with the outer cavity channel, and a second hole is formed in the near end of the inner tube. The second hole is communicated with the outer cavity channel and the inner cavity channel; the catheter seat is connected to the near end of the catheter main body, and the catheter seat is provided with connecting ports which are respectively communicated with the inner cavity and the outer cavity; the end cap can only plug the connecting port, or plug the connecting port and the second hole at the same time. By means of the design of the end cap, compared with a conventional perfusion catheter, a hemostasis valve, a blocking guide wire and other components are omitted, surgical operation is simpler and more convenient, burdens are relieved for doctors and patients, and the diversified requirements of clinical use are met; meanwhile, the whole structure of the double-cavity catheter is simple, and the production cost can be reduced.

An access device for a heart chamber, a removable hemostatic valve unit, and a system including a cardiac assist unit are disclosed. In examples, the access device) includes an apical base plate and a sealing unit configured to provide a separation of a wet zone from a heart chamber and a dry zone with a gaseous environment outside of said heart chamber inside a patient body at the same time.

Hemostasis valves and methods for making and using hemostasis valves are disclosed. An example hemostasis valve may include a body having a proximal end region. A core barrel may be at least partially disposed within the proximal region. The cartridge includes a sealing member. The cartridge may have a proximal member and a distal member, and may define a seal retention region. The sealing member may have an axial thickness of about 0.04 to about 0.2 inches. The sealing member may be secured within the seal retention region by mechanical bonding.

A clinical personal protection equipment (PPE) system, worn by a healthcare provider, that can include a data display and selectively controls medical equipment. The system includes a computer platform that selectively communicates with a network, such as a Wifi network, and selectively communicates with and controls one or more electronic devices, such as an interactive rotating hemostatic valve and Tuohy-Borst adapter. The headset fits about the head of user and includes a face shield. A camera is located on the headset and is in communication with the computer platform, the camera creating visual data of a forward view from the headset and transmitting the visual data to the computer platform.

The application discloses an expandable catheter sheath and a use method thereof. The expandable catheter sheath comprises a catheter assembly and a hemostatic valve arranged at one end of the catheter assembly. The catheter assembly comprises an expansion tube and an outer tube sleeved on the expansion tube. The expansion tube is internally provided with an expansion cavity, and at least one branch pipe is communicated with the expansion cavity. Fluid flows into or out of the expansion cavity through the branch pipe. When the fluid flows into the expansion cavity through the branch pipe, the expansion tube expands and props open the outer tube, so that the outer diameter of the catheter assembly is increased. When the fluid flows out of the expansion cavity through the branch pipe, the expansion tube and the outer tube contract, so that the outer diameter of the catheter assembly is reduced. The expansion tube with the expansion cavity is arranged, and the fluid is filled or extracted into the expansion cavity, so that the expansion range of the catheter sheath is controlled, and the catheter sheath can enter and exit the blood vessel with a smaller diameter. Meanwhile, medical staff can flexibly control the expansion degree of the expandable catheter sheath according to actual needs, and the application range is wide.

The invention relates to the technical field of medical instruments, and particularly discloses an adjustable bending sheathing canal system. In order to solve the problem that an operator is forced to replace sheathing canals of different specifications midway, the hemostasis device comprises a handle, a sheathing canal and a hemostasis valve assembly, the sheathing canal is provided with a fixed section and an adjustable bending section, a first bending adjusting ring and a second bending adjusting ring are arranged in the adjustable bending section at intervals, a first bending adjusting wire and a second bending adjusting wire are arranged in the sheathing canal in a penetrating mode, the first bending adjusting wire is connected with the first bending adjusting ring, and the second bending adjusting wire is connected with the second bending adjusting ring. The second bending adjusting wire is connected with the second bending adjusting ring, an adjusting assembly is arranged in the handle and comprises a first driving block and a second driving block, and the first driving block can pull the first bending adjusting wire to enable the adjustable bending section to bend with a first curvature radius; the second driving block can pull the second bending adjusting wire to enable the adjustable bending section to bend with a second curvature radius, and the first curvature radius is different from the second curvature radius. Different bending modes can be selected according to the anatomical form of the blood vessel without replacing instruments.

The invention discloses a hydraulic pulse thrombectomy instrument which comprises a treatment main machine, the treatment main machine comprises a plug, a shell, a pressure sensor, a hydraulic transmitter and a pulse connector, and the hydraulic transmitter adopts one of a spring driving mode, a cylinder driving mode, a water pump driving mode and a motor driving mode; the thrombectomy catheter comprises a catheter base, a hemostasis valve, a cap, a catheter body, a liquid inlet pipe, a one-way valve and a marking ring. The supporting tube comprises a joint and an expansion tube; the supporting tube is communicated with the thrombectomy catheter in a sealed mode, and the other end of the supporting tube is communicated with a hydraulic emitter in the treatment host. The negative pressure value in the main cavity is monitored in real time through the pressure sensor when the treatment host is powered on to work, and after the main cavity is blocked and the negative pressure reaches a set value, the hydraulic emitter works to generate high-pressure jet flow, and the high-pressure jet flow is sprayed out from the side cavity opening in the tip position of the catheter to crush thrombus and relieve blockage.

A guiding device for forming an interventional channel includes an outer sheath being a radially deformable tube, a hemostatic valve connected to a proximal end of the outer sheath, and a driving member including a head and a transmission part. The driving member has an initial position and a working direction directed from the initial position toward the proximal end. The driving member moves along the working direction to expand the outer sheath until being withdrawn outside the human body.

An introducer sheath system comprising a pressure regulator operably coupled to a hemostatic valve, the pressure regulator comprising a chamber filled with gas and fluidically isolated from the hemostatic valve. The introducer sheath system may comprise a tubular sheath, a hub assembly, and an expander connected to the proximal end of the sheath and positioned within the sheath, the hub assembly comprising a housing and a hemostatic valve positioned therein, and the introducer sheath system further comprises a pressure regulator connected to the hub and in fluid communication with the hemostatic valve, and a sealed chamber defined by the pressure regulator, the chamber comprising an internal space, the internal space being filled with gas and fluidically isolated from the hemostatic valve.

Devices and methods for providing a hemostatic valve fluid seal within a guide catheter are disclosed. A delivery apparatus can include a handle including a proximal segment including one or more fluid seals mounted within the proximal segment, an intermediate segment disposed adjacent and distal to the proximal segment, the intermediate segment including an inner surface defining a first lumen having a first inner diameter, and a distal segment disposed adjacent and distal to the intermediate segment, a shaft extending distally from the handle, the shaft including a second lumen extending between a distal end and a proximal end of the shaft, the second lumen including a second inner diameter that is smaller than the first inner diameter of the first lumen, and a fluid seal that is a circular elastomeric silicone comprising two perpendicular cross-hair cuts at the center of the seal and extending partially through the seal.

A robotic system for endovascular procedures is disclosed, comprising an inclined rail (2) towards the patient, to which multiple modular robotic actuators (RA) are suspended in a Master–Slave configuration and mounted on carriages (S1, S2, S3, S4...). Each RA is reusable, while dedicated disposable modules are attachable to the actuators to directly engage commercially available catheters and guidewires of different diameters and types, including guidewires with steerable cores, fixed hemostatic valves, and, in future applications, actively steerable catheters with one or two degrees of freedom and rotating hemostatic valves. S1 is an RA2 configured for catheter advancement and rotation; S2 is an RA4, RA5 or RA6 configured to hold and rotate a hemostatic valve, advance the catheter at the same speed as S1, and drive a steerable guidewire; S3 is a configurable RA for additional guidewires or catheters, including active ones; S4 is an RA2 placed at a fixed distance from S1, driving the synchronous translation of S2 and S3 with respect to S1 via toothed belts or equivalent gear systems. The system is managed by an electronic control unit connected via wired or wireless network, preferably through a serial protocol such as RS485, with galvanic isolation and synchronized with supervisory and data-recording software. Optional modules include force sensors, artificial intelligence for pre-operative planning, and integration with in vitro patient simulators for training and validation.

The utility model discloses a duckbilled sealing hemostasis valve, which comprises a first connecting seat, a valve body shell, a first diaphragm and a duckbilled sealing element, the inner wall of one end of the valve body shell is fixedly provided with an internal thread, the valve body shell is fixedly connected with the first connecting seat through the internal thread, the other end of the valve body shell is fixedly provided with a connector, and the connector is fixedly connected with the duckbilled sealing element. A first diaphragm and a duckbilled sealing element are respectively clamped in the valve body shell in a sliding manner, the first diaphragm and the duckbilled sealing element are clamped and fixed in the valve body shell in a limiting manner through a first connecting seat, and the first diaphragm is arranged between the duckbilled sealing element and the first connecting seat. Due to the design of the duckbilled sealing valve with the S-shaped supporting piece, after the interventional catheter is withdrawn, the duckbilled sealing has good sealing performance, and blood is prevented from flowing out through the hemostasis valve.

An access device for a heart chamber, a removable hemostatic valve unit, and a system and a method of creating a transapical passage on a beating heart are disclosed. In examples, the access device (1) includes an apical base plate (100) and a sealing unit (3) configured to provide a separation of a wet zone from a heart chamber and a dry zone with a gaseous environment outside of said heart chamber inside a patient body at the same time.

This introducer at least has a housing (10) and a hemostatic valve (4) that is housed in the housing (10). The hemostatic valve (4) has: valve-proximal-end surfaces (46U, 47U) near a proximal end (10P); valve-distal-end surfaces (47R, 48R) near a distal end (10D); and valve-side surfaces (46S, 47S, 48S). The housing has upstream sections (51U, 52U), a downstream section (51R), and side sections (51S, 52S, 53S). The upstream section (52U) has: an end surface (37A) that contacts the valve-proximal-end surface (47U) of the hemostatic valve (4); and a floor surface (39A) that does not contact the valve-proximal-end surface (47U) of the hemostatic valve (4). The downstream section (51R) has: a proximal end (20P) that contacts the valve-distal-end surface (47R) of the hemostatic valve (4); and an end surface that does not contact the valve-distal-end surface (47R) of the hemostatic valve (4).

A multiple lumen hemostatic valve device can be used with a guide catheter in a medical intervention procedure. The valve device can include a manifold. A distal exit port can be coupled to the manifold and can provide a exit lumen. A first entry port can be coupled to the manifold and can provide a first entry lumen in communication with the exit lumen. A second entry port can be coupled to the manifold and can provide a second entry lumen in communication with the exit lumen. The first and second entry ports can be arranged to be parallel to each other and can respectively include independently operable first and second plunger valves.

This invention discloses an adaptive guiding sheath, including a sheath seat with a button on its side and a first hemostatic valve with a through hole inside. The first hemostatic valve includes an upper hemostatic valve part and a lower hemostatic valve part with an integral symmetrical structure. The upper hemostatic valve part has a first section and a second section arranged sequentially along the axial direction. The first section is a cylindrical section with a first diameter, and the second section has a second diameter larger than the first diameter. A contraction line is sleeved on the outside of the first section and is linked to the button. This invention, through a two-section aperture design, significantly reduces the frictional resistance of catheter insertion and removal by utilizing the larger inner diameter of the second section; at the same time, the contraction line only acts on the first section with a smaller initial inner diameter, requiring only minimal radial contraction to achieve a tight seal, effectively avoiding the risk of material wrinkling and blood leakage caused by excessive compression of the hemostatic valve and the risk of catheter collapse, thus achieving a balance between low resistance and high reliable hemostasis.

A guiding sheath has a hemostatic valve and a central lumen into which a diagnostic or treatment catheter can be introduced and guided into a patient. The hemostatic valve also includes an electrically conducting element or proximity sensing element on its proximal end that interacts with a second electrically conducting element or proximity sensing element on a proximal end of the diagnostic or treatment catheter that can be passed through the central lumen of the guiding sheath and into the patient's heart. The interaction between the two electrically conducting elements or proximity sensing elements enables the location of the distal end of the diagnostic or treatment catheter in the patient's heart without the need for irradiating the patient.