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  Vascular wound closure deviceRelated Patent Categories: Surgery, Instruments, Sutureless ClosureVascular wound closure device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060064124, Vascular wound closure device. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. application Ser. No. 09/929,700, filed Aug. 13, 2001, which is a divisional of U.S. application Ser. No. 09/325,982, filed Jun. 4, 1999, now U.S. Pat. No. 6,287,322, which is a continuation-in-part of U.S. application Ser. No. 09/092,282, now U.S. Pat. No. 6,524,326, filed Jun. 5, 1998, which is a continuation-in-part of U.S. application Ser. No. 08/984,757, now U.S. Pat. No. 6,425,901, filed Dec. 4, 1997, which is a continuation-in-part of U.S. application Ser. No. 08/943,369, filed Oct. 3, 1997, now abandoned, which is a continuation-in-part of U.S. application Ser. No. 08/764,611, U.S. Pat. No. 6,004,341 filed Dec. 5, 1996, which claims the benefit of U.S. Provisional Application Ser. No. 60/009,643, filed Dec. 7, 1995. The entirety of each of the priority applications is hereby incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a system which assists in the locating of openings in tissue, including punctures, and facilitates the treatment, diagnosis or revision, of those areas. More specifically, in the case of closure of the opening, the invention relates to devices which aid in locating and isolating the opening. [0004] 2. Description of the Related Art [0005] In many medical procedures, there is a necessity to locate an opening in tissue so that some form of treatment, diagnosis or revision, can be applied to that opening. For example, in order to use transluminal balloon angioplasty an opening must be created in order to insert a balloon; this opening must be later located to be closed. Transluminal balloon angioplasty is used in the treatment of peripheral vascular disease to increase or restore blood flow through a significantly narrowed artery in a limb; it is also used in the treatment of blockage of the coronary arteries. In fact, coronary angioplasty has emerged as a major viable alternative to bypass surgery for revascularization of stenotic and occluded coronary arteries. Unlike bypass surgery, angioplasty does not require general anesthesia, opening of the chest wall, use of a heart-lung machine, or transfusion of blood. Angioplasty is not only less invasive and less traumatic to the patient, it is also less expensive because of the shorter hospital stay and shorter recovery time. [0006] Transluminal balloon angioplasty is performed by first inserting a hollow needle through the skin and into the patient's femoral artery. A guidewire is advanced through the hollow needle and into the artery, then along the patient's vasculature toward the site of the blocked blood vessel or heart valve to be treated. X-ray imaging is used to help move the guidewire through the vascular system and into position just past the stenosis to be treated. A balloon catheter is then threaded over the guidewire and advanced until the deflated balloon is within the stenosis. The balloon is then repeatedly inflated to widen the narrowed blood vessel. After the procedure is complete, the catheter and guidewire are withdrawn from the blood vessels and the patient. [0007] Angiography, which is used to detect diseases that alter the appearance of blood vessels, is performed in a similar manner. A hollow needle is first inserted through the skin and into the femoral artery, and a guidewire is then inserted through the needle and into the affected blood vessel. A catheter is then threaded over the guidewire and into the blood vessel to be examined, using x-ray imaging to guide the catheter to the desired position. Contrast medium is then injected, and a rapid sequence of x-ray pictures are taken so that blood flow along the affected vessel can be studied. Once complete, the catheter and guidewire are removed from the patient's body. [0008] After the catheter and guidewire used during angioplasty or angiography are removed, the puncture wound in the femoral artery must be closed and the bleeding through the puncture site in the artery stopped. Currently, ice packs and/or pressure are applied to the artery for a period lasting up to several hours in an attempt to stop the bleeding. There exists, however, a significant chance that upon movement by the patient, the wound will reopen and begin bleeding again. Although efforts have been made to close the puncture wound using staples, clips, and sutures, they have been unsuccessful, largely due to the inability to clearly locate and visualize the puncture wound in the femoral artery. [0009] Other wounds in the vasculature of a patient can also be difficult to locate and access. Thus, a device and method to facilitate the location of such wounds in the vasculature of a patient, such as femoral artery puncture wounds following transluminal balloon angioplasty and angiography, would be extremely beneficial. A device having the ability to aid in locating and isolating the puncture wound and facilitating the closure of the wound by everting the edges of the wound opening and then using staples, clips, sutures, plugs or adhesives would eliminate the prolonged bleeding currently associated with such wounds. SUMMARY OF THE INVENTION [0010] The preferred form of the invention facilitates the location of the tissue opening, e.g., an opening in a vessel. The purpose of such location is to allow for the performing of other medical procedures on the opening or surrounding tissue. These procedures include but are not limited to therapeutic (e.g., radiation, drug delivery, etc.), closure of the opening, or modification of the opening (e.g., enlarging the opening) procedures. [0011] In accordance with one embodiment, the present invention provides a vascular wound locator device, comprising an elongate body having proximal and distal ends. At least a portion of the body is tapered toward the distal end. The body comprises two separately-formed elongate body members. Each body member has an inner surface having an elongate groove formed therein. When the internal surfaces of the body members abut one another, the grooves cooperate to form a channel extending along the length of the body. An elongate hollow dilator is included and has an elongate lumen comprising a proximal opening and a distal opening at the proximal and distal ends, respectively, of the dilator. The lumen is sized and adapted to accommodate a guidewire therethrough. The dilator is sized and adapted so that part of the dilator fits within the body channel, and the distal end of the dilator extends from the body channel. An annular cap of the embodiment is configured to fit over the proximal end of the body when the body members are engaged with one another. The annular cap has a hole adapted to generally align with the body channel. A coupling structure is adapted to engage the annular cap with the proximal end of the body so that the body members are held together at least partially by the annular cap. [0012] In accordance with another embodiment, a vascular wound closure device is provided. The device comprises a retractor comprising two elongate members adapted to move relative to each other between open and closed positions. Each retractor member has a distal end and a proximal end. The members are adapted to define a longitudinal channel therebetween when in the closed position An elongate catheter has a lumen adapted to slidably accommodate a guidewire. The catheter is configured to at least partially fit into the longitudinal channel so that a distal portion of the catheter extends from a distal end of the retractor. Means are provided for aligning the elongate retractor members and selectively maintaining the retractor members in the closed position so that the retractor members engage the catheter and hold the catheter in place. The aligning means comprises an aperture generally aligned with the longitudinal channel. [0013] In yet another embodiment, the present invention provides an apparatus for facilitating closure of an opening in a blood vessel, which includes a closure instrument having an elongated member defining a longitudinal axis with proximal and distal ends. The elongated member has a vacuum lumen extending at least a portion of the length thereof for conveying a vacuum and terminating in a vacuum port adjacent the distal end of the elongated member. The distal end of the elongated member is dimensioned to be positioned proximal a vessel opening in a blood vessel whereby vessel edge portions defining the vessel opening are at least drawn toward the vacuum port in response to a vacuum conveyed through the vacuum lumen. At least one surgical clip, preferably, two, is mounted adjacent the distal end of the elongated member and is adapted to be formed to an at least partially formed condition thereof. The one clip is positioned with respect to the vacuum port to engage the vessel edge portions drawn toward the vacuum port upon movement of the one clip to the formed condition thereof to generally approximate the vessel edge portions to at least partially close the vessel opening. [0014] The apparatus may further include a clip forming member mounted to the elongated member and engageable with the one clip. The clip forming member is movable relative to the elongated member to move the one clip to the formed condition thereof. Preferably, first and second clip forming members are mounted to the elongated member in diametrically opposed relation. [0015] In another preferred embodiment, an apparatus for facilitating closure of an opening in a blood vessel, includes an elongated member having a vacuum lumen extending at least a portion of the length thereof for conveying a vacuum and terminating in an axial vacuum port, a source of vacuum connectable to the elongated member in communication with the vacuum lumen whereby vacuum forces conveyed through the vacuum lumen and vacuum port cause vessel edge portions defining the vessel opening to be at least partially drawn into the vacuum port such that the vessel edge portions assume a general everted condition, and a pair of surgical clips releasably mounted to the distal end of the elongated member adjacent the vacuum port and positioned to engage the vessel edge portions drawn into the vacuum port upon movement of the surgical clips to respective formed conditions thereof to thereby approximate the vessel edge portions to at least partially close the vessel opening. The apparatus may further include a manually actuable clip forming mechanism mounted to the elongated member. The clip forming mechanisms are movable to move the surgical clips to respective formed conditions thereof. [0016] A method for locating a vessel opening in a blood vessel is also disclosed. The method includes the steps of applying a vacuum to the blood vessel adjacent the vessel opening such that the apparatus applying the vacuum first locates the area surrounding the vessel opening by drawing a mixture of blood and bodily fluid, then isolates the exact location of the vessel opening by being moved to the location where only blood is drawn. Once the location and isolation of a vessel opening is achieved, other medical procedures can be performed on the opening or its surrounding tissue. These medical procedures can be therapeutic (drug or radiation delivery) or closing or modifying (e.g. enlargement of vessel opening) in type. Also, once the vessel opening has been isolated, the further vacuum application everts vessel edge portions defining the vessel opening. Once eversion of the vessel edge portions occur, closing techniques can be used to close the opening. [0017] Due to the use of a vacuum, contaminants and blood clots are cleaned off the puncture site allowing better healing of the wound. Also, re-entry is made easier and less scarring is produced. BRIEF DESCRIPTION OF THE DRAWINGS [0018] FIG. 1 is a side view of a portion of a human body, showing the site where the femoral artery is typically accessed and punctured during angioplasty or angiography. [0019] FIG. 2 is a perspective view of one embodiment of the wound closure device of the present invention. [0020] FIG. 3 is an exploded perspective view of the wound closure device of the present invention. Continue reading about Vascular wound closure device... Full patent description for Vascular wound closure device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Vascular wound closure device 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 Vascular wound closure device or other areas of interest. ### Previous Patent Application: Rapid exchange fluid jet thrombectomy device and method Next Patent Application: Button anchor system for moving tissue Industry Class: Surgery ### FreshPatents.com Support Thank you for viewing the Vascular wound closure device patent info. 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