초록 ▼

A percutaneous epicardial injection apparatus for myocardial repair and treatment includes a catheter having a tubular wall, an interior portion surrounded by the tubular wall, a base end, a distal end, and a central longitudinal axis extending between the catheter base end and the catheter distal e

A percutaneous epicardial injection apparatus for myocardial repair and treatment includes a catheter having a tubular wall, an interior portion surrounded by the tubular wall, a base end, a distal end, and a central longitudinal axis extending between the catheter base end and the catheter distal end. The catheter distal end has an end face that is formed at an oblique angle relative to the catheter longitudinal axis and adapted to attach to a patient's myocardium using suction. A lumen extends from the catheter base end to the catheter distal end within the catheter interior. The lumen is adapted to slidably support an elongated syringe having a needle tip adapted for movement between a retracted position wherein the needle tip is recessed within the catheter interior to an extended position wherein the needle tip extends from the catheter interior. The injection apparatus may be used to introduce a myocardial repair or treatment material into a dysfunctional area of the myocardium while the catheter distal end is attached thereto by extending the needle tip into the myocardium and injecting the myocardial repair or treatment material into the dysfunctional area.

대표청구항 ▼

A percutaneous epicardial injection apparatus for myocardial repair and treatment includes a catheter having a tubular wall, an interior portion surrounded by the tubular wall, a base end, a distal end, and a central longitudinal axis extending between the catheter base end and the catheter distal e

A percutaneous epicardial injection apparatus for myocardial repair and treatment includes a catheter having a tubular wall, an interior portion surrounded by the tubular wall, a base end, a distal end, and a central longitudinal axis extending between the catheter base end and the catheter distal end. The catheter distal end has an end face that is formed at an oblique angle relative to the catheter longitudinal axis and adapted to attach to a patient's myocardium using suction. A lumen extends from the catheter base end to the catheter distal end within the catheter interior. The lumen is adapted to slidably support an elongated syringe having a needle tip adapted for movement between a retracted position wherein the needle tip is recessed within the catheter interior to an extended position wherein the needle tip extends from the catheter interior. The injection apparatus may be used to introduce a myocardial repair or treatment material into a dysfunctional area of the myocardium while the catheter distal end is attached thereto by extending the needle tip into the myocardium and injecting the myocardial repair or treatment material into the dysfunctional area. on of an infrared radiation detector and a laser system for aiming said detector, in which said system includes a laser and an optical means: the improvement in which said optical means converts a single laser beam from said laser into more than two visible separated laser light spots displayed in a pattern on a target surface to identify the edge of the area on said surface from which infrared radiation is detected by said detector. 7. The instrument of claim 6 in which the optical means is a diffraction lens. . 9. A method according to claim 8, wherein the gilsonite and asphalt cement are 20 to 60 parts by weight of the topcoating liquid, the solvent is 20 to 80 parts by weight of the topcoating liquid and the anti-stripping agent is 1 to 5 parts by weight of the topcoating liquid. 10. A method according to claim 9, wherein the solvent comprises petroleum kerosene/naphtha, VM&P naphtha and lactol spirits. 11. A method according to claim 9, wherein the solvent comprises petroleum kerosene/naphtha and lactol spirits. 12. A method according to claim 8, wherein the gilsonite and asphalt cement are 35-45% by weight of the topcoating liquid, the solvent comprising petroleum kerosene/ naptha, VM&P naptha and lactol spirits is 50-60% by weight of the topcoating liquid and the antistripping agent is up to 5% of the topcoating liquid. 13. In a method of repairing a damaged area of a bituminous wearing course including: heating the damaged area with an infrared heater; raking the heated damaged area so as to mix highly oxidised top surface material of the damaged area with less oxidised substrata; applying a bitumen rejuvenating liquid composition to the raked heated damaged area; adding new bituminous material to the rejuvenated raked heated damaged area; and compacting the new bituminous material to provide a compacted repaired area of bituminous wearing course: the improvement which comprises: said bitumen rejuvenating liquid composition being resistant to breakdown at temperatures of up to 200° C. and consisting essentially of a cationic slow set emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract, a naturally occurring mineral asphalt and water. 14. A method according to claim 13, wherein, before the application of the new bituminous material, the method further includes raking a mix comprising the raked heated damaged area and said bitumen rejuvenating liquid composition in order to work the said bitumen rejuvenating liquid composition thoroughly into the said mix to ensure complete coating of the raked heated damaged area with the said bitumen rejuvenating liquid composition. 15. A method according to claims 13, wherein the cationic slow set emulsifier is from 1 to 5 parts by weight of the composition, the heavy paraffinic distillate solvent extract and the heavy naphthenic distillate solvent extract is 30 to 80 parts by weight in total of the composition, and the water is from 10 to 60 parts by weight of the composition. 16. A method according to claim 13, wherein the cationic slow set emulsifier is from 1 to 5 parts by weight of the composition, the heavy paraffinic distillate solvent extract and the heavy naphthenic distillate solvent extract is from 60 to 65 parts by weight in total of the composition, and the water is from 30 to 35 parts by weight of the composition. 17. A method according to claim 13, further comprising providing a further boost of bitumen rejuvenating compounds into the surface of the compacted repaired area and binding and sealing and binding the surface of the compacted repaired area by applying a topcoating liquid consisting essentially of gilsonite, asphalt cement, solvent and anti-stripping agent to the surface of the compacted repaired area. 18. A method according to claim 17, wherein the gilsonite and asphalt cement are 20 to 60 parts by weight of the topcoating liquid; the solvent is 20 to 80 parts by weight of the topcoating liquid and the anti-stripping agent is 1 to 5 parts by weight of the topcoating liquid. 19. A method according to claim 18, wherein the solvent comprises petroleum kerosene/naphtha, VM&P naphtha and lactol spirits. 20. A method according to claim 18, wherein the solvent comprises petroleum kerosene/naphtha and lactol spirits. 21. A method according to claim 17, wherein the gilsonite and asphalt cement are 35-45% by weight of the topcoating liquid, the solvent comprising petroleum kerosene/ naptha, VM&P naptha and l