In an aspect, a device includes a body structure including a core and a sleeve disposed around at least a portion of the core, the core defining a channel through the core extending from a first end of the core to a second end of the core, the sleeve including a flange adjacent the second end of the core; and a deployable portion coupled to the body structure adjacent the first end of the core, the deployable portion having a wired structure transitionable between a retained configuration and a deployed configuration, wherein a top portion of the wired structure extends beyond the first end of the core in a longitudinal direction when the wired structure is in the retained configuration, and wherein first end of the core extends beyond the top portion of the wired structure when the wired structure is in the deployed configuration.

In an aspect, a device includes a body structure including a core and a sleeve disposed around at least a portion of the core, the core defining a channel through the core extending from a first end of the core to a second end of the core, the sleeve including a flange adjacent the second end of the core; and a deployable portion coupled to the body structure adjacent the first end of the core, the deployable portion having a wired structure transitionable between a retained configuration and a deployed configuration, wherein a top portion of the wired structure extends beyond the first end of the core in a longitudinal direction when the wired structure is in the retained configuration, and wherein first end of the core extends beyond the top portion of the wired structure when the wired structure is in the deployed configuration.

This retractor easily ensures a surgical field as desired by an operator, can flexibly ensure and change the surgical field in accordance with the surgical site and the surgical situation, and can easily be moved to a desired position in the surgical site and taken out after the surgery. A retractor 1 holds a surgical incision in a body in an opened state to ensure a surgical field in small-incision endoscopic surgery, and includes a base body 2 that is a thin plate made of tin having a purity of not less than 99.9% and has an elongated rectangular shape in an extended state of the base body. The retractor 1, in an extended form in a rectangular shape or in a rounded form in a small shape, can be inserted from a small incision wound into the body, and can easily be delivered to the surgical incision in the body by a surgical instrument. The base body 2 is bent and deformed into a desired shape by the surgical instrument and is applied to the surgical incision in the body, so that the surgical incision can be held in an opened state so as to ensure the surgical field. The base body 2 is made of tin having a purity of not less than 99.9%, and thus the base body 2 has a high flexibility in particular, thereby allowing the base body 2 to be easily bent and deformed into a desired form by use of the surgical instrument.

Device for the simultaneous fixation of medical instruments, the device having a joint member which has a holding section in the form of a spherical segment, the spherical segment having a continuous cavity along a longitudinal axis, the holding section being subdivided into at least two holding segments perpendicular to the longitudinal axis, and at least two arm elements being arranged on the joint member, the apparatus further comprising a tension ring supported by the support surfaces and a tensioning element configured to press the support segments together, wherein when the support segments are pressed together, the support surfaces press against the tension ring. Furthermore, a system with such a device is revealed.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, ultra-MIS techniques.

A cannula for use in a terminable intraosseous device comprises a cannula body, and a penetrator-independent proximal bone penetration indicator (PBPI) associated with the body for positively indicating initial penetration into the proximal bone. In various embodiments, the PBPI comprises a roughened surface provided at a distal end of the cannula body to assist in increasing an amplitude of vibrations that are generated immediately upon contact with a proximal bone cortex during performance of an intraosseous injection, a resilient element fixed at one end which becomes plastically deformed, a visually indicative element which is exposed when the distance between the cannula body and penetrator is changed, or a frictionally engageable element. In some embodiments, a stopper prevents additional penetration into the proximal bone, and a reinforcing member inserted within a cannula body lumen reinforces a thin-walled portion of the cannula body.

A medical treatment implement which has an excellent degree of freedom of a procedure and into which a trocar can be re-stuck includes a tubular retractor main body configured to be indwelled in an incision wound and a converter (20) configured to close an opening end portion of an upper end of the retractor main body and to be puncturable with a trocar.

The converter (20) includes a ring-shaped frame portion (22) detachably mounted on the opening end portion and a sheet portion (21) which is mounted inside the frame portion (22) and airtightly covers the opening end portion. A compression force P is applied to the sheet portion (21) in an inner diameter direction.

A flexible puncture needle device includes a puncture needle (10). The puncture needle (10) includes an outer tube (11) and a central tube (13). The outer tube (11) includes a puncture needle head (111) and a plurality of segments (112). The puncture needle head (111) includes a needle tip at front end and a pair of notches (1122) or a pair of protrusions (1121) at rear end, and a pair of protrusions (1121) and a pair of notches (1122) are formed at two ends of the segment (112), respectively. A pair of protrusions (1121) or a pair of notches (1122) at an end of the segment (112) are engaged with a pair of notches (1122) or a pair of protrusions (1121) at rear end of the puncture needle head (111) to form a needle head joint. Two adjacent segments (112) are engaged via the notches (1122) and the protrusions (1121) to form a joint, and the needle head joint and a plurality of joints are sequentially engaged with each other from head to tail to form an outer tube (11) with the puncture needle head (111) at tip end and a tube body capable of axially bending. Central tube (13) is inserted into the outer tube (11) from another end of the outer tube (11) away from the puncture needle head (111) to form a central tube vacant portion (114) and central tube insertion portion (115) of the outer tube (11). The central tube vacant portion (114) is capable of bending, and during the forward or backward movement of the central tube (13) in the outer tube (11) along an axis of the outer tube (11). A bendable angle of the central tube vacant portion (114) changes as a length of the central tube vacant portion (114) changes.

Assembly for use with a vacuum system and an esophageal positioning device esophageal positioning device includes an introducer, in which the esophageal positioning device includes a first segment and a second segment. The second segment is pivotally connected to the first segment. A gap portion of an outer tube of the introducer is defined along a longitudinal axis between a tube tip of the introducer and the distal end of the second segment of the esophageal positioning device when the esophageal positioning device is disposed within the introducer. The gap portion defines one or more radial vacuum holes.

Provided herein are, inter alia, devices, methods, and systems are provided for delivering pharmaceutical fluid formulations, such as with metered infusion capabilities delivered extravascularly to target locations within a patient while maintaining positional stability. An exemplary device can be configured to deliver non-continuous streams or boluses of fluid to a target site. In certain embodiments, the injection device can engage with an exemplary trocar that is configured to have one or more stabilization mechanisms on a shaft thereof such that the trocar provides a stable delivery mechanism to the injection device. The trocar is configured to receive an injection needle therein that is attached to the injection device, and the injection device can deliver fluid therethrough to a target tissue site.