초록 ▼

A bleed back control assembly for controlling blood loss during catheterization procedures includes a side arm body having a proximal end engaging and retaining a cap assembly and a seal assembly. The seal assembly includes a single elastomeric bleed back seal. The bleed back seal has an aperture an

A bleed back control assembly for controlling blood loss during catheterization procedures includes a side arm body having a proximal end engaging and retaining a cap assembly and a seal assembly. The seal assembly includes a single elastomeric bleed back seal. The bleed back seal has an aperture and is normally closed. The bleed back seal self-sizes to devices introduced through the aperture. The cap assembly includes a funnel cap having a dilator. Depressing the funnel cap causes the dilator to open the aperture in the bleed back seal. A spring, wound around the dilator, biases the funnel cap to its original position. The side arm body includes a secondary branch having a lumen, and a finger rest on the exterior of the secondary branch.

대표청구항 ▼

A bleed back control assembly for controlling blood loss during catheterization procedures includes a side arm body having a proximal end engaging and retaining a cap assembly and a seal assembly. The seal assembly includes a single elastomeric bleed back seal. The bleed back seal has an aperture an

A bleed back control assembly for controlling blood loss during catheterization procedures includes a side arm body having a proximal end engaging and retaining a cap assembly and a seal assembly. The seal assembly includes a single elastomeric bleed back seal. The bleed back seal has an aperture and is normally closed. The bleed back seal self-sizes to devices introduced through the aperture. The cap assembly includes a funnel cap having a dilator. Depressing the funnel cap causes the dilator to open the aperture in the bleed back seal. A spring, wound around the dilator, biases the funnel cap to its original position. The side arm body includes a secondary branch having a lumen, and a finger rest on the exterior of the secondary branch. protector being provided with first and second spaced apart cutouts at the proximal end of the protector, with one of the cutouts having a greater circumferential extent than the other cutout, the protector being mounted on the collar with the first rib portion located in the first cutout and the second rib portion located in the second cutout so that the protector is adapted to be mounted on the collar in only one rotational orientation. 7. The safety needle assembly according to claim 6, wherein the through opening in the protector is circumferentially aligned with one of the rib portions. 8. The safety needle assembly according to claim 1, wherein the collar is rotationally mounted on the hub. 9. The safety needle assembly according to claim 1, wherein the sheath includes a proximal end provided with a pair of lugs extending away from one another, the collar including a pair of spaced apart rib portions each provided with a hole, each of the lugs being positioned in one of the holes. 10. The safety needle assembly according to claim 1, wherein the engaging part of the protector includes a periphery of the through opening in the protector, the sheath having an inclined surface that is engaged by the periphery of the through opening in the protector during movement of the protector from the covering position toward the removed position. 11. The safety needle assembly according to claim 1, wherein the through opening in the protector extends from a proximal end of the protector to a distal end of the protector, the protector including longitudinally extending edge surfaces and the sheath including longitudinally extending edge surfaces, each of the edge surfaces of the sheath facing one of the edge surfaces of the protector when the sheath is in the initial position and the protector is in the initial position, the engaging part of the protector including a portion of each of the edge surfaces of the protector being inclined and engaging inclined portions of the edge surfaces of the sheath during movement of the protector from the covering position toward the removed position. 12. The safety needle assembly according to claim 1, wherein the through opening in the protector extends along only a portion of a longitudinal extent of the protector, the protector including longitudinally extending edge surfaces that face longitudinally extending edge surfaces of the sheath adjacent proximal end portions of the sheath and protector, at least a portion of the sheath extending through the through opening in the protector and being located within the interior of the protector when the sheath and the protector are in the initial positions, the engaging part of the protector including inclined portions of the edge surfaces of the protector, the inclined portions of the edge surface of the protector engaging inclined portions of the edge surfaces of the sheath during movement of the protector from the covering position toward the removed position. 13. The safety needle assembly according to claim 1, wherein the sheath includes oppositely positioned side walls and a back wall that together define the channel in the sheath, portions of the side walls of the sheath extending through the through opening in the protector and into the interior of the protector when the sheath is in the initial position. 14. A safety needle assembly comprising: a hub having a proximal end adapted to be connected to a fluid transfer device and a distal end; a cannula having a proximal end connected to the hub and a distal end; a protector having an interior, the protector being positioned in an initial position in which the protector at least partially covers the cannula, the protector being adapted to be removed so that the cannula is uncovered by the protector, the protector including an opening that communicates with the interior of the protector; a sheath pivotally mounted with respect to the hub and configured to define a channel; at least one cannula engaging projection provided on the sheath and extending into the channel; the sheath being positioned in an initial position in which at least a portion of the sheath extends through the opening in the protector and into the interior of the protector, the sheath being adapted to pivot away from the cannula and out through the opening in the protector and being adapted, after the protector is removed, to pivot back towards the cannula to a cannula locking position in which the cannula is lockingly engaged by the at least one cannula engaging projection; and means for preventing the cannula engaging projection from lockingly engaging the cannula when the sheath is in the initial position. 15. The safety needle assembly according to claim 14, wherein the sheath is pivotally mounted on a collar, the collar being mounted on the hub. 16. The safety needle assembly according to claim 15, wherein the sheath includes a proximal end portion provided with a pair of lugs positioned in opposing relation to one another and extending towards one another, the collar comprising an annular split portion and a rib portion, the rib portion possessing at least one hole and the lugs being positioned in the hole. 17. The safety needle assembly according to claim 16, wherein the sheath includes a pair of spaced apart arms, each of the lugs extending from one of the arms, the rib portion of the collar having outwardly facing side surfaces, at least a portion of each of the outwardly facing side surfaces of the rib portion being angled outwardly in a direction towards the distal end of the hub so that frictional engagement between the collar and the hub when the sheath is in the initial position is greater than the frictional engagement between the collar and the hub after the sheath has been pivoted away from the initial position. 18. The safety needle assembly according to claim 15, wherein the protector includes a proximal end that engages the collar. 19. The safety needle assembly according to claim 18, wherein the collar is provided with first and second rib portions circumferentially spaced apart from one another, with one of the rib portions having a greater width than the other rib portion, and the protector being provided with first and second spaced apart cutouts at the proximal end of the protector, with one of the cutouts having a greater circumferential extent than the other cutout, the protector being mounted on the collar with the first rib portion located in the first cutout and the second rib portion located in the second cutout so that the protector is mountable on the collar in only one rotational orientation. 20. The safety needle assembly according to claim 19, wherein the opening in the protector is circumferentially aligned with one of the rib portions. 21. The safety needle assembly according to claim 14, wherein the sheath is pivotally mounted on a collar that encircles the hub, the collar being rotatable with respect to the hub when the sheath is pivoted away from the cannula. 22. The safety needle assembly according to claim 14, wherein the sheath includes a proximal end provided with a pair of lugs extending away from one another, the collar including a pair of spaced apart rib portions each provided with a hole, each of the lugs being positioned in one of the holes. 23. The safety needle assembly according to claim 14, wherein the opening in the protector is surrounded by a wall that engages a portion of the sheath as the protector is removed. 24. The safety needle assembly according to claim 14, wherein the opening in the protector extends along less than the entire longitudinal extent of the protector, the protector including longitudinally extending edge surfaces that face longitudinally extending edge surfaces of the sheath adjacent proximal end portions of the sheath and the protector, the sheath being positioned relative to the protector so that at least a portion of the sheath is located within an interior of th