15 results about "Subcutaneous Infusions" patented technology

Systems and methods for mitigating backflow in subcutaneous infusion devices are disclosed. A medical device can include base having a surface configured to be placed against a patient's skin and a subcutaneous assembly coupled to the base and configured to be inserted through the patient's skin when the surface of the base is placed against the patient's skin. The subcutaneous assembly includes an infusion cannula defining a lumen extending therethrough and configured to infuse fluid therethrough, and a sensor configured to sense a biological analyte. An expandable member (e.g., a swellable material) is coupled to a radially outer surface of the subcutaneous assembly. The expandable member is configured to expand in a radially outward direction when in the presence of bodily fluid, thereby at least partially blocking a flow path from the distal end portion of the infusion cannula to the sensor.

The invention provides a subcutaneous infusion device. The subcutaneous infusion device comprises a base, a first sealing part, a second sealing part, a first cover body and a second cover body, the base is provided with an infusion cavity which is provided with a first opening, a second opening and a third opening. The second opening is used for the indwelling catheter to penetrate through; the first sealing part blocks the first opening; the second sealing part blocks the third opening; wherein the first axis and the second axis are arranged at an angle; the first cover body and the second cover body are detachably connected with the base respectively; the first cover body is provided with a puncture needle hole, and when the first cover body is connected with the base, the puncture needle is allowed to penetrate through the first sealing part along the first axis through the puncture needle hole to penetrate into the indwelling catheter; the second cover body is provided with an infusion needle connecting part arranged along a second axis, and when the second cover body is connected with the base, an infusion needle connected with the infusion needle connecting part penetrates through the second sealing part along the second axis to be communicated with the infusion cavity.

The present invention provides methods and kits for preventing, treating or delaying various cardiovascular diseases or disorders especially heart failure by extended release of neuregulin to a mammal. Moreover, the extended release of neuregulin is administered by subcutaneous infusion with a pump.

This invention discloses a safe and controllable injection system for subcutaneous infusion of preparations, comprising: a shell with an internal cavity for accommodating a reservoir; a reservoir, installed within the cavity, for storing the infused drug solution; a drive assembly, located within the shell and connected to the reservoir for applying a continuous thrust to the reservoir; and a micro-infusion tubing, one end of which is sealed to the outlet of the reservoir, and the other end of which is equipped with an injection needle for puncturing subcutaneous tissue, the needle having an internal micro-volume flow path to reduce residual drug solution within the tubing. This invention uses a constant-force spiral spring as the drive source, combined with a flow-limiting tube with precisely controlled inner diameter, to provide a stable and controllable driving force throughout the infusion process, ensuring uniform drug infusion within a predetermined time, improving the stability and efficacy of drug absorption; furthermore, the infusion process eliminates the need for continuous hand-held operation by medical personnel, saving medical resources.

The utility model relates to the technical field of medical infusion, in particular to an infusion apparatus switching device and an infusion system thereof. The infusion apparatus switching device comprises a switching base and a limiting assembly, a puncture channel and an infusion channel which are communicated with each other are arranged in the switching base, a puncture soft needle is arranged in the puncture channel, the puncture channel is used for receiving the puncture needle so as to implant the puncture soft needle subcutaneously, and the infusion channel is used for being communicated with an infusion pipeline and enabling liquid in the infusion pipeline to flow to the puncture soft needle; the limiting assembly comprises a first limiting block and a second limiting block which are installed on the infusion channel in a matched mode, the first limiting block is used for fixing the infusion pipeline, and the second limiting block is used for fixing the first limiting block. The infusion apparatus has the advantages that due to the fact that the first limiting block is fixed in the infusion channel through the second limiting block, and the second limiting block is detachable, when the second limiting block is detached, the first limiting block can also be detached and replaced, and when the first limiting block needs to be replaced, the first limiting block can be replaced conveniently through the arrangement mode.

A catheter system (30) for subcutaneous infusion of fluid may include a catheter (32), which may include one or more fenestrations (72) disposed between a distal end (34) of the catheter and a proximal (36) end of the catheter. The catheter system may include an introducer needle (48) extending through the catheter. The catheter system may include a catheter adapter (38), which may include a stabilization platform (44) having an upper surface that is generally planar. The catheter system may include an adapter (62), which may include one or more ports (63), and an extension tube (64). The extension tube may be coupled to the catheter adapter and the adapter.

Control systems for infusions are described herein. An infusion control system includes a sensor and a controller. The sensor is configured to measure a subcutaneous fluid level. The control is configured to monitor the subcutaneous fluid level during a subcutaneous fluid infusion provided by an infusion system. Further the controller is configured to provide a feedback signal if the measured subcutaneous fluid level exceeds a subcutaneous fluid level threshold.

Control systems for infusions are described herein. An infusion control system includes a sensor and a controller. The sensor is configured to measure a subcutaneous fluid level. The control is configured to monitor the subcutaneous fluid level during a subcutaneous fluid infusion provided by an infusion system. Further the controller is configured to provide a feedback signal if the measured subcutaneous fluid level exceeds a subcutaneous fluid level threshold.

The invention discloses a multi-site subcutaneous infusion auxiliary device which comprises a multi-site subcutaneous infusion positioning patch. A plurality of subcutaneous infusion positioning holes penetrating to the lower bottom face of the multi-site subcutaneous infusion positioning patch are evenly formed in the position, close to the periphery of the multi-site subcutaneous infusion positioning patch, of the upper end face of the multi-site subcutaneous infusion positioning patch. The multi-site subcutaneous infusion positioning patch has the advantages that in the implementation process, iodophor and the like are used for disinfecting the abdomen or the front and outer side of the thigh of a patient in advance, and then the multi-site subcutaneous infusion positioning patch is fixedly adhered to the skin surface of the abdomen or the front and outer side of the thigh of the patient; puncture needles can be respectively inserted into the plurality of subcutaneous infusion positioning holes regardless of the front and the back, required liquid medicine can be infused into a patient subcutaneously through a subcutaneous infusion syringe connected with the puncture needles, the positions and the distances of the subcutaneous infusion positioning holes are defined in advance for related operations, so that the problem that a plurality of puncture points are excessively concentrated does not exist, and the operation efficiency is improved. Therefore, the problems of local bleeding, infection, inflammation and the like of subcutaneous puncture parts of patients due to concentrated puncture points are solved, and the application is safe and reliable to use.

A subcutaneous infusion kit includes a hyaluronidase formulation, a concentrated immunoglobulin G (IgG) formulation, and a needle set for subcutaneously infusing the hyaluronidase formulation and the IgG formulation at an infusion site of a subject. The concentrated IgG formulation has a relatively high viscosity compared to standard therapeutic protein formulations. The needle set includes a needle for administering a useful dosage of the concentrated IgG formulation within a reasonable time frame while minimizing leakage at the infusion site and discomfort to the subject.

A control system for infusion, in particular a subcutaneous infusion control system, is described herein. An infusion control system includes a sensor and a controller. The sensor is configured to measure a subcutaneous fluid level. The controller is configured to monitor a subcutaneous fluid level during a subcutaneous fluid infusion provided by the infusion system. Further, the controller is configured to provide a feedback signal if the measured subcutaneous fluid level exceeds a subcutaneous fluid level threshold.

The infusion needle comprises a needle seat and two outer fins which are integrally formed, the two outer fins are located on the two sides of the needle seat, and the two outer fins are switched between the transverse flattening state and the longitudinal erecting state relative to the needle seat; the two inner fins are fixedly arranged on the two sides of the bottom of the needle base, and when the two outer fins are transversely unfolded relative to the needle base, the two inner fins are embedded into the embedding openings formed in the two outer fins respectively; the L-shaped needle tube is fixedly arranged on the needle seat and comprises a tip part and a tail part, and the tip part is perpendicular to the bottom of the needle seat; and one end of the infusion tube is sleeved at the tail part of the L-shaped needle tube. According to the utility model, the two outer fins can be turned upwards to form an operating handle, so that the L-shaped needle tube can be conveniently clamped by fingers to pierce the skin, the operation is convenient and fast, and the fitting property is good; and integrated design is adopted, one-time injection molding can be achieved, structural components are reduced, the working procedure is simplified, and the production efficiency is improved.

Systems and methods for mitigating backflow in subcutaneous infusion devices are disclosed. A medical device may include a base having a surface configured to be placed against a skin of a patient; and a subcutaneous assembly coupled to the base and configured to be inserted through the skin of the patient when the surface of the base is placed against the skin of the patient. The subcutaneous assembly includes an infusion cannula defining a lumen extending through the infusion cannula and configured to infuse fluid through the lumen, and a sensor configured to sense a biological analyte. An expandable member (e.g., an expandable material) is coupled to a radially outer surface of the subcutaneous component. The expandable member is configured to expand in a radially outward direction when bodily fluid is present, thereby at least partially blocking a flow path from the distal end portion of the infusion cannula to the sensor.