Sterilizable pump and systems for use with sterile fluids
a technology of sterile fluids and pumps, applied in the field of steril, can solve the problems of preventing the tube from re-inventing to its normal shape, limiting the operation of the pump, and leaking during normal use, so as to improve the control system of the surgical procedur
Inactive Publication Date: 2006-03-09
SHERWOOD SERVICES AG
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Benefits of technology
"The present patent describes sterilizable pumps and systems for circulating fluids in surgical procedures. The pumps have an eccentric bore and a plurality of radially angled vanes, which compress and expand to force fluid out of the pump. The pumps can be connected to a control system for surgical instruments and are designed for selective connection in an opening provided in the control system. The pumps have advantages such as being sterilizable, easy to use, and efficient in circulating fluids. The technical effects of the invention include improved sterilization and efficiency in surgical procedures."
Problems solved by technology
An issue which may arise with rotary peristaltic-type pumps is that the fluid delivery tube must recover its cylindrical shape following the passage of each roller thereover (i.e., the fluid squeezes) which may effect the tube's elasticity and impede the tube's ability to restore to its normal shape which may unnecessarily limit the operation of the pump.
Another issue which may arise with rotary peristaltic-type pumps is that the repetitive squeezing and / or pinching of the fluid delivery tube tends to weaken the tubing which, in turn, may lead to eventual leaking during normal usage.
Method used
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Embodiment Construction
[0040] Referring again to FIG. 1, a prior art control system for RF heating ablation is shown generally as 100. Control system 100 includes an insulated electrode shaft 104 having an exposed tip 103 for insertion into a patient's body such that exposed tip 103 can achieve a target volume to be ablated. Electrode shaft 104 preferably extends from a hub 106 including connection means (not shown) for connecting electrode shaft 104 to RF generator 107 and coolant supply and pump 108.
[0041] Preferably, RF generator 107 supplies RF power to electrode shaft 104, as shown by the RF power connection “P”. At the same time, electrode shaft 104 which includes a temperature sensor (not shown), feeds temperature information back to RF generator 107 and / or a controller circuit 109 relating to a temperature reading To or multiple temperature readings of the tissue coolant fluid or tip arrangement. According to the temperature reading, any modulation of the RF output power “P” is accorded by contro...
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An improvement for a control system for a surgical procedure is provided. The control system includes an electrosurgical instrument connectable to a source of electrosurgical energy, and a pump for circulating fluid to the electrosurgical instrument. The improvement includes a pump housing configured and adapted for selective connection in an opening provided in the source of electrosurgical energy. The housing defines a circular chamber formed therein, the circular chamber defining a central axis; an eccentric bore formed therein having a central axis substantially parallel with and spaced apart from the central axis of the circular chamber; an inlet formed therein and in fluid communication with the circular chamber; and an outlet formed therein and in fluid communication with the circular chamber.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application claims the benefit of and priority to U.S. Provisional Application Ser. No. 60 / 608,037, filed on Sep. 8, 2004, the entire contents of which are incorporated herein by reference.BACKGROUND [0002] 1. Technical Field [0003] The present disclosure relates to sterilizable pumps and systems, and more particularly to sterilizable pumps and systems, typically used to circulate sterile fluids and the like, to a target surgical site and / or through a surgical instrument. [0004] 2. Background of Related Art [0005] A wide variety of pump types have been used in the past for pumping any number of a variety of different liquids for any of a number of different functions and applications. Typically a peristaltic-type pump is used in connection with many medical applications and is applied externally of the fluid delivery tube. Thus, the peristaltic pump does not interfere with the sterile state which must be maintained for the i...
Claims
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IPC IPC(8): F04B17/00F04B35/04
CPCF04C5/00
Inventor FELTON, BRET S.
Owner SHERWOOD SERVICES AG