摘要:
The invention relates to a device (10) for injecting a liquid into a body, in particular that of a patient, of the type that comprises: a base (20) bearing an injection needle (22) that is to be inserted into the body; an injection conduit (24) connected to the needle (22); means (26) for extracting the needle (22) from the patient, including a plunger (52) mounted such that it can slide in relation to the base (20) between a needle (22) use position and a needle (22) extraction position; and means (28) for generating excess pressure in the injection conduit (24) as the needle (22) is extracted, including a flexible section (53) formed in the injection conduit (24), a cam surface (54) rigidly connected to the plunger (52), and a supporting surface rigidly connected to the base (20), in order to compress said flexible section (53) between the cam surface (54) and the supporting surface radially and perpendicularly to the needle (22) as the plunger (52) slides towards the needle (22) extraction position. The invention is characterized in that it includes means (56) for retaining the flexible section (53) substantially perpendicular to the needle (22).
摘要:
The medical device (10) has a prop (12) extending between a proximal end (12A) and a distal end, a nose (16) in the form of a perforating tip, secured to the distal end of the prop (12), a sheath (18), in which the prop (12) is housed, which can be moved by sliding between a first position in contact with the nose (16), and a second position spaced away from the nose (16), and at least one tube (22) extending in the sheath (18) between a proximal end (22A), accessible outside the sheath (18), and a distal end (22B) secured to the nose (16), the tube (22) having at least one perforation (24) near its distal end (22B). Each tube (22) can be radially deployed between a retracted configuration, in which each tube (22) can be covered by the sheath (18), and a radially protruding deployed configuration.
摘要:
Prosthetic implant of the type comprising: a tubular support (12) of axis X, which can be deformed between a compressed state with a small diameter and a dilated state with a larger diameter, the tubular support comprising a lattice comprising rhombus-shaped meshes (26), each mesh having a first diagonal (28) parallel to the axis X and a second diagonal (32) perpendicular to the axis X; and at least one resilient membrane (14A, 14B) arranged inside the tubular support. The membrane comprises a fixing portion (48, 52), the fixing portion being fixed to a fixing section (65, 66) delimited by a strand (20A, 20B) of the tubular support, the fixing section being oriented substantially parallel to the axis X.
摘要:
This device comprises a tubular endoprosthesis (11) of axis (X-X′) and a stent (13) of axis (Y-Y′) defining a distal retention opening (23A) and a proximal retention opening (23B). The device comprises a distal wire-like tie (33A) and a proximal wire-like tie (33B). Each tie (33A, 33B) forms a retaining loop (43) running around the endoprosthesis (11). Each retaining loop (43) can stretch between a configuration in which the endoprosthesis (11) is kept in a contracted state against the stent (13) and a configuration in which the endoprosthesis (11) is released. When each retaining loop (43) is in its releasing configuration, the axis (X-X′) of the endoprosthesis (11) is inclined with respect to the axis (Y-Y′) of the stent (13) when no external stresses are applied. The axis (X-X′) of the endoprosthesis (11) intersects the axis (Y-Y′) of the stent in the internal line (18) defined by the endoprosthesis (11).
摘要:
A device comprises an expandable implant (11) and a hollow stent (13) internally defining a central passage (14). Said hollow stent (13) defines a retention opening (23A) of the implant (11) near the distal end thereof (19). The inventive device also comprises a wire-type link (53A) for releasably fixing the implant (11) to the stent (13), which comprises a traction section (75A) introduced into the opening (23A), and extending inside the central passage (14). For the wire-type link (53A), the device comprises an internal insulation channel (29A) arranged in the central passage (14) and axially fixed with respect to the stent (13). The insolation channel (29A) receives only one wire-type link (53A) and define's a channel (41) which is devoid of a link at least between the proximal end (21) of the stent (13) and the retention opening (23A) and is placed in the central channel (14).
摘要:
The injection syringe (10) includes, on the one hand, an elongate syringe body (12) comprising a tube (16) and a front wall (20) equipped with an injection needle (22), and, on the other hand, a rear actuating plunger (14) mounted so as to be displaceable inside the tube (16). The body (12) additionally has a mobile needle protector (36) which can be displaced, under the effect of the actuating plunger (14) driven into the body (12), between a retracted position, set back from the injection end (22A) of the needle (22), and an active protection position, in which the front end of the protector is situated in front of the injection end (22A) of the said needle (22).
摘要:
The injection syringe (10) includes, on the one hand, an elongate syringe body (12) comprising a tube (16) and a front wall (20) equipped with an injection needle (22), and, on the other hand, a rear actuating plunger (14) mounted so as to be displaceable inside the tube (16). The body (12) additionally has a mobile needle protector (36) which can be displaced, under the effect of the actuating plunger (14) driven into the body (12), between a retracted position, set back from the injection end (22A) of the needle (22), and an active protection position, in which the front end of the protector is situated in front of the injection end (22A) of the said needle (22).
摘要:
A device includes an expandable implant and a hollow stent internally defining a central passage. The hollow stent defines a retention opening of the implant near the distal end thereof. The inventive device also includes a wire-type link for releasably fixing the implant to the stent, which has a traction section introduced into the opening and extending inside the central passage. For the wire-type link, the device includes an internal insulation channel arranged in the central passage and axially fixed with respect to the stent. The insulation channel receives only one wire-type link and defines a channel which is devoid of a link at least between the proximal end of the stent and the retention opening and is placed in the central channel.
摘要:
A kit according to the invention includes a tool and an implantable chamber. The implantable chamber comprises a hollow main body delimiting an internal volume opening outwards via a main opening. It further comprises a septum mounted on the main body to close the main opening, and at least one conduit extending from the main body. It also comprises a displacement member, movable relative to the main body, that projects from the main body via the conduit and actuates or sets in motion an element situated in the body of the patient. It lastly comprises a drive mechanism for driving the displacement member situated in the internal volume of the main body, in order to move the displacement member with respect to the main body. The tool includes a proximal maneuvering region and a distal region that is capable of piercing the septum to actuating the drive mechanism.
摘要:
The invention relates to a system for injecting a liquid into a body, comprising an implantable chamber disposed under the skin and an injection device including: a base bearing an injection needle having a free end that is intended to be inserted into the chamber; an injection conduit connected to the needle; means for extracting the needle; means that can be actuated to generate excess pressure in the injection conduit; synchronization means between the extraction means and the generation means for actuating the generation means during a needle extraction phase. The synchronization means can essentially only actuate the generation means when the free end of the needle is located in the chamber during the needle extraction phase.