2303results about "Wound drains" patented technology

Interatrial shunts are described herein that are designed to benefit both the left side of the heart and the right side of the heart. The interatrial shunt is anchored in the atrial septum to permit blood to flow between atrial heart chambers across the atrial septum. In accordance with some aspects, the lumen of the shunt has an effective orifice area selected to permit blood flow across the atrial septum to unload the patient's left ventricle with beneficial effects on the patient's right ventricle. The shunts are structured to be suitably anchored at the atrial septum for long-term implantation. Further, the shunts preferably have insignificant late lumen loss. The interatrial shunts are expected to treat pathologies such as heart failure and pulmonary hypertension.

An apparatus and method for a fluid collection system and automated fluid flow monitoring. The system can include a urine collection container, and a detection device configured to detect a volume of fluid in the urine collection container. The detection device can be coupled to the collection container without having to compromise the integrity of the closed fluid collection system or re-catheterizing the patient. The detection device can be configured to detect an inversion event, tilt event, and the like to determine a flow rate of fluid into the container. The detection device can be communicatively coupled with external computing devices to alert a clinician when the container is nearing capacity and when it has been emptied.

Described embodiments include apparatus (28) that includes a shunt (26). The shunt includes a flared distal portion (40), a flared proximal portion (44), and an intermediate portion (42), disposed between the distal portion and the proximal portion. The apparatus further includes a constricting flexible longitudinal element (38) passing circumferentially along the intermediate portion of the shunt, configured to constrict the intermediate portion of the shunt, and one or more proximal-portion-collapsing flexible longitudinal elements (36) configured to collapse the proximal portion of the shunt. Other embodiments are also described.

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

A differential pressure regulating device is provided for controlling in-vivo pressure in a body, and in particularly in a heart. The device may include a shunt being positioned between two or more lumens in a body, to enable fluids to flow between the lumens, and an adjustable flow regulation mechanism being configured to selectively cover an opening of the shunt, to regulate the flow of fluid through the shunt in relation to a pressure difference between the body lumens. In some embodiments a control mechanism coupled to the adjustable flow regulation mechanism may be provided, to remotely activate the adjustable flow regulation mechanism.

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

A reusable urinary catheter (72), comprising a catheter tube (12), a drainage member (22), the proximal end portion of the drainage member being connected to the distal end of the catheter tube, the distal end portion of the drainage member defining a drainage opening (28); a collapsible sleeve (18) surrounding the catheter tube, an introducer attached to the proximal end portion of the sleeve and the distal end portion of the sleeve being attached to the drainage member, the drainage member including channels (23) in fluid communication with the interior cavity of the sleeve, the channels allowing passage of sterilization fluid into and out of the sleeve; a holder (74) having a first port (66) and a second port (68), the introducer being releasably attached to the first port and the drainage member being releasable attached to the second port; and a sterilization fluid located within the sleeve.

Intermittent catheters in simple-to-use assemblies or systems thereof facilitate cleanliness before and after use. In an example, an intermittent-catheter system can include an intermittent catheter and packaging enclosing the intermittent catheter therein to maintain sterility of the intermittent catheter in an unused state of the intermittent-catheter system. The packaging can include a flexible packaging body and a packaging cover. The packaging body can be configured to hold a catheter tube of the intermittent catheter therein. The packaging cover can be configured to reveal a funnel of the intermittent catheter when an uncovering operation is performed. The uncovering operation can reveal an adhesive patch on either the packaging body or the packaging cover for adhering the packaging to a vertical surface for removal of the intermittent catheter from the packaging for catheterization. The packaging can be further configured for resealing the intermittent catheter therein subsequent to the catheterization.

Disclosed herein is a urinary catheter system including a urinary catheter, a drainage tube connecting the urinary catheter to a urine collection bag. The urine collection bag is configured to transition between a storage state and a usage state. The urine collection bag includes an intake port coupled to a first opening, an outlet, where the outlet is configured to transition from a closed state to an opened state to allow the volume of fluid to be displaced from the urine collection bag. A storage bag detachably coupled to the urine collection bag, the storage bag having a storage bag opening and configured to receive the male urinary catheter, the drainage tube, and the urine collection bag in the storage state.

An asymmetric device for regulating blood volume distribution across a patient's atrial septum having a first expandable end region and a second expandable end region. The first expandable end region is transitionable from a contracted delivery state to an expanded deployed state in which the first expandable end region extends into the patient's left atrium and an inlet end of the first expandable end region is in a first plane. The second expandable end region is transitionable from a contracted delivery state to an expanded deployed state in which the second expandable end region extends into the patient's right atrium and an outlet end of the second expandable end region is in a second plane, such that the first plane intersects the second plane. The device further includes a neck region joining the first expandable end region to the second expandable end region, wherein the neck region is sized and shaped for placement in the patient's atrial septum.

Systems, devices, and methods for shunting blood from one anatomical chamber / vessel to another anatomical chamber / vessel are described. For example, a dual frame shunt can include an anchoring frame / structure that is configured to self-expand and to anchor the shunt within an opening between two anatomical chambers / features. The shunt can also include an adjustable frame / structure disposed outside or inside of at least a portion of the anchoring frame and configured to expand / adjust to various sizes.

A laparoscopic surgical device includes a drain tube having a first drain end and a second drain end. The drain tube has a diameter of 2 mm to 5 mm. A laparoscope tube having a diameter of 5 mm is located adjacent to the drain tube. The laparoscope tube has a fixed end and a free end. The drain tube functions as a surgical drain and the laparoscope tube provides an access path into a surgical site for a camera or tools for surgery.

Devices and methods are described for accessing an intracranial extravascular space of a patient. For example, this disclosure describes devices and methods for drainage of a subdural hematoma disposed within an intracranial extravascular space of a patient.

Adjustable flow glaucoma shunts are disclosed herein. In one embodiment, for example, an adjustable flow shunt can include an outflow drainage tube having a proximal inflow region and a distal outflow region. The proximal inflow region can include aperture(s) defining a fluid inlet area positioned to allow fluid to flow therethrough. The shunt further comprises an inflow control assembly at the proximal inflow region. The inflow control assembly can include a control element configured to slidably engage the proximal inflow region and a spring element. The spring element is configured to be activated by non-invasive energy and, upon activation, slidably move the control element along the proximal inflow region such that (a) the one or more apertures are accessible and have a first fluid flow cross-section or (b) the one or more apertures are at least partially covered by the control element and have a second, different fluid-flow cross-section.

Aspects of the disclosure describe an implantable system for monitoring intracranial pressure (ICP) in a subject, the system comprising: a conduit for the flow of cerebrospinal fluid (CSF); a hermetically sealed compartment; a first pressure sensor configured to measure an absolute ICP and output a measurement, wherein the first pressure sensor is hermetically sealed in the compartment, and wherein the first pressure sensor comprises a surface exposed to the CSF in the conduit; a microcontroller disposed in the hermetically sealed compartment that receives multiple inputs including at least the output of the first pressure sensor; and an accelerometer disposed in the hermetically sealed compartment for monitoring a subject's positional status, and wherein the accelerometer communicates an output to the microcontroller.

The invention is directed to a device (1) for sealingly protective and at the same time stool-discharging tamponade of a circular anastomosis of two ends of the large intestine, as occur for example in the surgical resection of a rectal carcinoma, wherein a thin-walled balloon body (5) is placed in the region of the anastomosis, and the balloon (5), providing a tamponade, is filled with a filling medium in such a way that the lowest possible pressure necessary for the sealing tamponade of the anastomosed portion of the intestine can be maintained continuously, and, even in the event of a peristaltic contraction of the rectosigmoid colon, the pressure predefined by the user is maintained as constant as possible, wherein sufficiently high volumetric flows of the pressurizing medium supplied to and removed from the balloon (5) are achieved, such that the sealing contact between the balloon (5) and the intestinal wall is maintained in all segments of the balloon body in the course of a peristaltic contraction wave miming from the sigmoid to the anus.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

A urinary drainage system includes an air pressure apparatus. The air pressure apparatus includes a connector and an adapter. The connector includes a reduced diameter portion, a connector lumen extending from an upstream opening to a downstream opening in the reduced diameter portion, and a lateral port configured for drawing a fluid sample from the connector lumen. The adapter is sealing coupled to the connector and includes an adapter lumen receiving the reduced diameter portion, the downstream opening in fluid communication with the adapter lumen. A luminal space is defined in the adapter lumen around the reduced diameter portion of the connector. The adapter further includes an air intake port including a port lumen orthogonal to the adapter lumen, which is configured to provide a positive air flow to the luminal space to draw a fluid through the downstream opening in the reduced diameter portion of the connector.

The present technology is generally directed to adjustable shunting systems, including adjustable shunting systems having at least two discrete fluid flow paths having different fluid resistances. In at least some embodiments, the shunting systems include an actuator that controls which of the two discrete fluid flow paths is “open” to fluid flow. For example, the actuator can be configured to selectively control the flow of fluid through the system by selectively alternating between (i) opening a first flow path while closing a second flow path, and (ii) opening the second flow path while closing the first flow path.

A medical system includes a control unit that executes control of setting a first period in which cerebrospinal fluid is discharged from a body cavity while a fluid is injected into the body cavity and a second period in which the fluid is not injected into the body cavity and the cerebrospinal fluid is not discharged from the body cavity and alternately repeating the first period and the second period.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

A drainage member (112) including energy receivers (128) for bonding to a catheter shaft (102) using energy, and a urinary catheter including such a drainage member. A method for energy welding a drainage member to a catheter shaft wherein the drainage member includes energy receivers.

A CSF management method for use with a patient forms a closed loop CSF circuit between two points on the patient's body. The CSF circuit has a therapeutic inlet to receive a therapeutic material (e.g. a drug), and a pump having a pump outlet to direct CSF along the CSF circuit. The method controls the pump to direct CSF from the pump outlet at a CSF rate that is different from the natural flow rate (i.e., the natural CSF flow rate). The therapeutic material is added to the CSF via the therapeutic input at a therapeutic rate. The CSF rate is different than the therapeutic rate and / or may be greater than the therapeutic rate. Alternative methods may control a bolus drug infusion to localize the application to a target region.

The present application provides a shunt device, comprising a shunt member and a flow regulating mechanism. The shunt member comprises a body and an inlet and an outlet located at two ends of the body, and the shunt member defines a shunt passage for pressurized fluid; the flow regulating mechanism is connected to the shunt member, and the flow regulating mechanism is used for regulating the flow of the pressurized fluid flowing through the shunt passage; the flow regulating mechanism comprises a blocking portion having a variable form, and the blocking portion is configured such that when the fluid pressure at the inlet of and / or inside the shunt member is less than the fluid pressure outside the flow regulating mechanism, the blocking portion is driven by the fluid pressure outside the flow regulating mechanism to radially collapse, so that the flow regulating mechanism partially closes the shunt passage.

The present technology is generally directed to shunting systems having features designed to inhibit or disrupt an inflammatory or fibrotic response in the body, and associated systems and methods. For example, the disclosed shunting systems may have surface features including a plurality of protrusions and recesses configured to impede the development of fibrosis and thereby maintain patency of a bleb in / on an eye in which a shunting system is implanted. Multiple layers with surface features can be applied to and combined on an exterior surface of a shunting system to form a textured surface. The structure, arrangement, and dimensions of the surface features can be randomized to reduce the likelihood of organized fibroblast cell growth.

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

Systems and methods for delivering a device for regulating blood pressure across a patient's atrial septum are provided. The delivery apparatus may include a first catheter, a hub having one or more engagers disposed thereon, the one or more engagers configured to releasably engage with a first expandable end of the shunt in a contracted delivery state within a lumen of a sheath, and an second catheter extending through a center lumen of the first catheter and the hub, wherein the first catheter, the hub, and the second catheter are independently moveable relative to the sheath. The inventive devices may reduce left atrial pressure and left ventricular end diastolic pressure, increase cardiac output, increase ejection fraction, relieve pulmonary congestion, and lower pulmonary artery pressure, among other benefits. The inventive devices also may be used to treat subjects having heart failure, pulmonary congestion, or myocardial infarction, among other pathologies.

A stent comprising a tubular member, a lumen extending through the tubular member, a first retention structure and a second retention structure at opposite ends of the tubular member. The first retention structure comprises multiple coils and a removable anti-coiling material over the multiple coils of the first retention structure to present the multiple coils as an elongated extension of the tubular member, whereupon removal of the removable anti-coiling material at least one of the multiple coils of the first retention structure is presented and any excess coils can be trimmed.

A CSF management method for use with a patient forms a closed loop CSF circuit between two points on the patient's body. The CSF circuit has a therapeutic inlet to receive a therapeutic material (e.g. a drug), and a pump having a pump outlet to direct CSF along the CSF circuit. The method controls the pump to direct CSF from the pump outlet at a CSF rate that is different from the natural flow rate (i.e., the natural CSF flow rate). The therapeutic material is added to the CSF via the therapeutic input at a therapeutic rate. The CSF rate is different than the therapeutic rate and / or may be greater than the therapeutic rate. Alternative methods may control a bolus drug infusion to localize the application to a target region.

The invention relates to the technical field of RT type lacrimal passage drainage tube application, and particularly discloses an RT tube application method for simultaneously solving upper and lower lacrimal passage blockage, which comprises the following steps of: firstly, performing preoperative local anesthesia on a patient; the upper lacrimal punctum and the lower lacrimal punctum of the diseased eye are expanded, and after a thin probe is used for probing the obstruction position of the lacrimal passage from the upper lacrimal ductule and the lower lacrimal ductule, the lacrimal passage is flushed Expanding the obstructed part of the lacrimal passage by using a large probe; then, the artificial lacrimal duct is implanted, the RT tube is implanted into the upper and lower lacrimal ducts at the same time, the problem of blockage of multiple parts is solved through a single instrument, repeated damage to periorbital tissue caused by fractional operations is avoided, and the device is particularly suitable for complex cases that upper and lower lacrimal canalicules and nasolacrimal ducts are blocked or narrow at the same time; the whole-course drainage of the tears from the upper and lower lacrimal passages to the nasal cavity is further ensured, and the physiological path of tear circulation is recovered; the RT tube is placed, skin or mucous membrane does not need to be cut open, no scar is visible after operation, and the requirement for periocular beauty is met.