Abstract: A removable stylet for use in the introduction of cannulae into a vessel or chamber of a body for medical procedures, and a retrograde coronary sinus perfusion cannula using such stylet. The stylet is used to guide the cannula during insertion, and includes a proximal relatively stiff end that can be manually manipulated by the attending physician to guide the stylet. On the distal end of the stylet is a relatively flexible portion that can be shaped into various curves and which is form-retaining while retaining flexibility.

Abstract: An apparatus for the sanitary simultaneous removal of a plurality of indwelling tubes from an implantation site in a patient comprises a tube adapter that is connectable to the indwelling tubes. An impervious sleeve is fan-folded into a hub which extends around the tube adapter. In assembly the folded sleeve is retained by a shrink-wrapped plastic film. The sleeve can be extended for receiving the indwelling tubes therethrough and to encompass the implantation site. The indwelling tube and the implantation site are isolated from the environment when the distal open end of the sleeve is extended and applied about the implantation site and the indwelling tube is withdrawn into the sleeve. A drawstring is provided for closing the distal end of the sleeve after the tube has been withdrawn. The indwelling tubes can be maintained under suction or in connection with a drain during the removal operation.

Abstract: A cardioplegia management system comprises an inlet tube adapted for connection to a source of cardioplegic fluid, and at least two supply tubes extending from the inlet tube and in communication therewith, whereby fluid passing through the inlet will be directed to the supply tubes. The system also includes a base, and clamps associated with the supply tubes. Each of the clamps is mounted on the base in a position to selectively clamp and unclamp its respective supply tube, thereby selectively blocking or allowing flow of fluid through the supply tubes.

Abstract: A perfusion catheter for use in open heart surgery having an inflatable cuff adjacent the distal end in communication with the lumen of the catheter to self-inflate when perfusion liquid is introduced into the lumen. A plug in the lumen within the cuff causes lumen flow to by-pass from the proximal end of the cuff to the distal end of the cuff through transverse parts in the lumen. A flow restriction at the distal end of the lumen causes pressure build-up to inflate the cuff. A pressure monitoring lumen splices to the catheter tube to parallel the tube down to the distal end where it is in communication with the end of the catheter and also with the distal end of the cuff to register cuff pressure. An introducer shaft is provided to be inserted into the lumen to abut the plug to stiffen the catheter, thus facilitating insertion, and a stiffener spine at the cuff area of the catheter also provides rigidity to compensate for the weakening of the lumen resulting from the transverse ports.

Abstract: A biopsy assembly with an inner stylet having a needle end with a biopsy retrieval recess on the needle end. At the other end of the stylet is a hub for controlling the needle. A hollow outer needle with a main hub at the proximal end carries the inner needle in a sliding relationship. Releasable latch means are provided on the respective hubs to lock them in a fixed but releasable axial position which makes it possible for a physician to enter the spaced hubs in a cocked biopsy gun.

Abstract: A catheter for retrograde perfusion of the heart through the coronary sinus, which has an infusion lumen for introducing perfusion liquid into the heart, a self inflating balloon, and a channeled flow tip at a distal end of the catheter for perfusing a cardioplegia solution into the coronary sinus.

Abstract: There is disclosed an apparatus for the sanitary removal of an indwelling tube from an implantation site in a patient, comprising a tube adapter that is connectable to the indwelling tube. An impervious sleeve is fan-folded into a hub which extends around the tube adapter. In assembly the folded sleeve is retained by a shrink-wrapped plastic film. The sleeve can be extended for receiving the indwelling tube therethrough and to encompass the implantation site. The indwelling tube and the implantation site are isolated from the environment when the distal open end of the sleeve is extended and applied about the implantation site and the indwelling tube is withdrawn into the sleeve. A drawstring is provided for closing the distal end of the sleeve after the tube has been withdrawn. Embodiments are shown for removing a plurality of indwelling tubes in one operation, and for maintaining the lumen of the indwelling tube under suction or in connection with a drain during the removal operation.

Abstract: A removable stylet for use in the introduction of cannulae into a vessel or chamber of a body for medical procedures, and a retrograde coronary sinus perfusion cannula using such stylet. The stylet is used to guide the cannula during insertion, and includes a proximal relatively stiff end that can be manually manipulated by the attending physician to guide the stylet. On the distal end of the stylet is a relatively flexible portion that can be shaped into various curves and which is form-retaining while retaining flexibility.

Abstract: There is disclosed an apparatus comprising a hub that includes an annular container disposed about a central aperture for receiving an exterior portion of an indwelling tube therethrough to engage a bottom portion of the container in sealing contact with the implantation site. An extensible impervious membrane is folded within the container and is in sealing contact therewith, the membrane being arranged to form an open sleeve for receiving the tube and being coextensible therewith during withdrawal of the tube. A tie is provided to seal the sleeve about the exterior wall of tube, leaving the free end of the tube accessible to the operator. The indwelling tube can then be withdrawn through the central aperture into the coextending closed sleeve. A plastic film that adheres to the bottom portion of the container is provided for closing the central aperture to enclose the removed tube in the sleeve.

Abstract: An arterial cannula which includes a diverting side hole which simultaneously perfuses blood to the body and the lower extremity. Two barbs on the cannula exterior position the diverting hole just inside the blood vessel and prevent the back wall of the blood vessel from blocking the diverting hole. A transparent flash chamber on the proximal end of the cannula provides a visual indication of the entrance of the diverting side hole into the blood vessel. When the diverting hole enters the blood vessel, blood immediately fills the flash chamber.

Abstract: A perfusion catheter for use in open heart surgery having an inflatable cuff adjacent the distal end in communication with the lumen of the catheter to self-inflate when perfusion liquid is introduced into the lumen. A plug in the lumen within the cuff causes lumen flow to by-pass from the proximal end of the cuff to the distal end of the cuff through transverse parts in the lumen. A flow restriction at the distal end of the lumen causes pressure build-up to inflate the cuff. A pressure monitoring lumen splices to the catheter tube to parallel the tube down to the distal end where it is in communication with the end of the catheter and also with the distal end of the cuff to register cuff pressure. An introducer shaft is provided to be inserted into the lumen to abut the plug to stiffen the catheter, thus facilitating insertion, and a stiffener spine at the cuff area of the catheter also provides rigidity to compensate for the weakening of the lumen resulting from the transverse ports.

Abstract: A needle stop for a biopsy needle or the like in the form of a spring having coils in firm engagement with the surface of the shaft of the needle. Ends of the spring may be pinched to enlarge the coils and permit movement of the stop along the shaft. A guard tube is associated with the stop for covering the point of the needle when not in use.

Abstract: A perfusion catheter for use in open heart surgery having an inflatable cuff adjacent the distal end in communication with the lumen of the cathether to self-inflate when perfusion liquid is introduced into the lumen. A reinforcing spine is installed at the cuff area to lend stiffness to the distal end. Flow through passsages in the cuff prevent stagnation and also permit pressure monitoring of the cuff pressure as well as pressure at the distal end of the catheter. An introducer shaft is provided to abut a plug in the lumen, the plug serving to shunt flow through the cuff and also to allow the introducer to apply pressure to the distal end of the catheter when the distal end is being projected into a body organ.

Abstract: A goniometer for needle placement in connection with a computer tomograph to direct a needle at a proper angle to reach an area for biopsy or other surgical procedures in the human body. One embodiment of the device includes a double ring, the outer ring having arcuate graduations and a level mounted thereon, and the inner ring being rotatable in the outer ring to various angle positions and including a needle carrier for receiving a needle holder.The outer ring has serrations on a continuous arcuate surface and the inner ring has resilient detents to contact and rid on the serrations. A lever operated needle holder has a cam to lock a detent into a serration when the needle holder is moved to a position to retain a needle.

Abstract: An arterial cannula which includes a diverting side hole which simultaneously perfuses blood to the body and the lower extremity. Two barbs on the cannula exterior position the diverting hole just inside the blood vessel and prevent the back wall of the blood vessel from blocking the diverting hole. A transparent flash chamber on the proximal end of the cannula provides a visual indication of the entrance of the diverting side hole into the blood vessel. When the diverting hole enters the blood vessel, blood immediately fills the flash chamber.

Abstract: A localization needle having an inner and outer needle, the outer needle having a window at the distal end and the inner needle having a barb to project out of the window upon relative axial movement of the needles. A first hub on the inner needle has axially spaced recesses to retain and locate a second hub on the outer needle. The first hub is expandable to allow motion of the second hub from a proximal to a distal position. A manually operable flexible oval within the first hub is used to expand the first hub to allow the relative movement of the second hub.

Abstract: A cannula assembly including a tube cannula and a hollow introducer needle. At the proximal end of the cannula are three fittings: first, a first luer fitting affixed to the proximal end of the tube cannula; second, a luer fitting removably attached to the first luer fitting, this second luer fitting having a first air porous water locking plug at a proximal end penetrated by the needle; and, third, a needle handle removably attachable to the second luer fitting. The proximal end of the needle handle is blocked also by a second air porous water blocking plug. The second plug prevents escape of blood from the hollow needle upon penetration of the arterial wall. The first plug controls the rate of flow of blood to the cannula tube and allows clamping of the tube after withdrawal of the introducer needle and prior to connection to a cardioplegia supply line.