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Balloon occlusion device having a proximal valveRelated Patent Categories: Surgery, Instruments, Internal Pressure Applicator (e.g., Dilator), Inflatable Or Expandible By Fluid, Inserted In Vascular SystemBalloon occlusion device having a proximal valve description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050261725, Balloon occlusion device having a proximal valve. Brief Patent Description - Full Patent Description - Patent Application Claims
CLAIM OF PRIORITY [0001] The present application claims priority under 35 U.S.C. .sctn. 119 to U.S. Provisional Application Ser. No. 60/212,187 filed on Jun. 16, 2000, entitled "Angioplasty Catheter", the entirety of which is incorporated by reference herewith. 1. FIELD OF THE INVENTION [0002] The present invention relates to medical devices, specifically a medical device having a low profile valve for selectively inflating and deflating an inflatable balloon disposed upon the medical device, wherein the valve allows passage of interventional devices over the medical device during use. 2. BACKGROUND OF THE INVENTION [0003] In order to perform many vascular procedures a guidewire is initially inserted into the patient's vasculature. The guidewire is generally inserted into the patient through an incision created in the patient's femoral artery. After the guidewire has been placed within the patient's vasculature, other interventional devices such as catheters may be passed over the guidewire. As used herein, the term "interventional device" is intended to include, but not be limited to, any known device capable of being inserted within the human vasculature for diagnosis, treatment or inspection thereof. Additionally the terms "catheter" and "guidewire" as utilized herein are intended to be interchangeable when referring to the medical device in accordance with the present invention. [0004] One difficulty associated with this procedure however is that the guidewire must be held in place while the interventional device is passed over the guidewire. It is possible that the guidewire may become dislodged from the position where it was initially placed, therefore when a interventional device is advanced over the guidewire it may not be advanced to the desired position. [0005] A common medical procedure where it is desirable to place a guidewire and then advance interventional devices over the guidewire are angioplasty and/or bypass procedures. In an angioplasty procedure, the guidewire may be advanced up to or through a blockage in a patient's vessel, wherein a catheter containing a stent or other interventional device is then passed over the guidewire to the occluded area. [0006] A common procedure performed on occluded or narrowed vessels is to place an angioplasty catheter having a balloon disposed on one end within the occluded region and expanding the balloon, thereby expanding the vessel. The balloon catheter is typically formed of a flexible material wherein the catheter includes radiopaque markings thereon in order to properly place the balloon within the desired region. The balloon catheter is placed within the patient's vasculature through a percutaneous access site such as the femoral artery. The balloon catheter is placed within the patient's vasculature by tracking the catheter over a guidewire which has been placed first. The guidewire enables a user to more easily track the flexible catheter into a proper position, wherein the balloon may be inflated to expand the vessel and/or occlusion therein. [0007] Another commonly utilized cardiovascular procedure is stenting. Stenting is a procedure wherein a expanding device is placed within an obstructed vessel in order to hold open or expand the constricted vessel. Stenting procedures are carried out in a manner similar to the balloon angioplasty procedure described above. Many times both procedures will be performed wherein the vessel may be first expanded with a balloon catheter and subsequently a stent will be deployed thereafter to maintain the expanded diameter of the vessel. [0008] During stenting and/or balloon angioplasty procedures there is the risk that plaque or other debris may be dislodged from the inner walls of the vessel. The plaque may be in the form of small particles which may be carried within the patient's blood stream and may lead to other complications such as embolism if the particles become lodged into a branch vessel or artery and restrict or prevent blood flow to that vessel or artery. [0009] Therefore it is desirable to provide a device which may be utilized during a medical procedure such as those described above wherein the device may be utilized to prevent dislodged particles from flowing into a patient's blood stream and potentially causing further blockage or a stroke. It is also desirable to provide a device which may be utilized to temporarily occlude a vessel distal an area where a surgical procedure is to be performed thereby providing a contained area for the surgeon to operate within. [0010] One such device has been disclosed in U.S. Pat. No. 5,807,330 to Teitelbaum, the entirety of which is incorporated by reference herewith. However, there remains a desire for an improved low profile valve for the device of Teitelbaum. [0011] A further object of the present invention therefore is to provide a medical device having a low profile valve means disposed on the proximal end portion, wherein the valve may be selectively opened and closed thereby enabling the inflation and deflation of a balloon disposed at the distal end portion of the device. Furthermore, the valve provides a sufficiently low profile area wherein other interventional devices may be passed over the medical device to conduct surgical procedures within the patient's vasculature. [0012] A further object of the present invention is to provide an medical device wherein an balloon disposed upon the distal end portion of the device may be selectively inflated or deflated through a valve means wherein the inflation device is removable from the valve means. SUMMARY OF THE INVENTION [0013] In one aspect of the invention there is provided a medical device for vessel occlusion, the medical device including an elongated body having a distal end portion, a proximal end portion, and a lumen disposed therethrough. The medical device further includes an inflatable balloon disposed at the distal end portion of the elongated body, the balloon being in fluid communication with the lumen, and an opening defined at the proximal end portion of the elongated body, the opening being in fluid communication with the balloon via the lumen. A valve body is moveably disposed at the proximal end portion of the elongated body; the valve body being movable between a closed position and an open position. The valve body is configured to engage a surface of the elongated body, distal to the opening, to seal the opening when the valve body is in the closed position. [0014] In another aspect of the invention, there is provided a medical device for vessel occlusion. The medical device includes an elongated body having a distal end portion, a proximal end portion, and a lumen disposed therethrough. The medical device further includes an inflatable balloon disposed at the distal end portion of the elongated body, the balloon being in fluid communication with the lumen. An opening is defined at the proximal end portion of the elongated body, the opening being in fluid communication with the balloon via the lumen. A valve body is moveably disposed at the proximal end portion of the elongated body, the valve body being movable between a closed position and an open position. The valve body is configured to engage an outer surface of the elongated body to seal the opening when the valve body is in the closed position. [0015] In another aspect of the present invention there is provided a medical device for vessel occlusion, the medical device including an elongated body having a distal end portion, a proximal end portion, and a lumen disposed therethrough. The medical device further includes an inflatable balloon disposed at the distal end portion of the elongated body, the inflatable balloon being in fluid communication with the lumen. An opening is defined at the proximal end portion of the elongated body, the opening being in fluid communication with the balloon via the lumen. A valve body is moveably disposed at the proximal end portion of the elongated body, the valve body being movable between a closed position and an open position. The valve body is configured to engage an outer surface at the proximal end portion of the elongated body, distal to the opening, to seal the opening when the valve body is in the closed position. The valve body includes a side wall having a cavity defined therein to receive the proximal end portion of the elongated body, and an outer surface substantially flush with an outer surface of the distal end portion of the elongated body when in the closed position. At least one of the valve body and the elongated body has a projection extending therefrom for mating engagement with the other body to prevent inadvertent movement of the valve body at least when in the closed position. DETAILED DESCRIPTION OF THE DRAWINGS [0016] The objects and advantages of the invention will become apparent from the following detailed description of preferred embodiments thereof in connection with the accompanying drawings in which like numerals designate like elements and in which: [0017] FIG. 1 is a side view of the medical device according to the present invention; [0018] FIG. 2 is a partial cross-sectional side view of one representative embodiment of the distal tip of the medical device according to the present invention; [0019] FIG. 2B is a partial cross-sectional side view of one representative embodiment of a removable distal tip according to the present invention; Continue reading about Balloon occlusion device having a proximal valve... Full patent description for Balloon occlusion device having a proximal valve Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Balloon occlusion device having a proximal valve patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Balloon occlusion device having a proximal valve or other areas of interest. ### Previous Patent Application: Medical device systems Next Patent Application: Devices and methods for protecting against distal embolisms Industry Class: Surgery ### FreshPatents.com Support Thank you for viewing the Balloon occlusion device having a proximal valve patent info. 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