All publications and patent applications mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.
A number of vascular diseases, such as coronary artery disease and peripheral vascular disease, are caused by the build-up of fatty atherosclerotic deposits (plaque) in the arteries. These deposits limit blood flow to the tissues that are supplied by that particular artery. Risk factors for this type of disease include advanced age, diabetes, high blood pressure, obesity, history of smoking, and high cholesterol or triglycerides.
When these deposits build up in the arteries of the heart, the problem is called coronary artery disease (CAD). When these deposits build up in the arteries of a limb, such as a leg, the condition is called peripheral artery disease (PAD). Symptoms of CAD - angina, heart disease, and heart attacks, are well known. Symptoms of PAD can include pain on walking, and wounds that do not heal. If PAD is not treated, it can eventually produce critical limb ischemia (CLI), gangrene, and loss of limb. Roughly 30% of the population over the age of 70 suffers from PAD.
When the plaque builds up to the point where an artery is totally occluded, the obstruction is referred to as a Chronic Total Occlusion (CTO). CTOs can confound the treatment of CAD, because the sudden loss of heart muscle can lead to sudden death. A CTO that occludes the peripheral arteries for PAD patients is also extremely serious. PAD patients that suffer from a CTO often enter a downward spiral towards death. Often the CTO in a peripheral artery results in limb gangrene, which requires limb amputation to resolve. The limb amputation in turn causes other complications, and roughly half of all PAD patients die within two years of a limb amputation.
For both CAD and advanced PAD, prompt treatment of such blockages is thus essential. Here, less invasive angioplasty or atherectomy procedures have many advantages. In these procedures, a catheter is inserted into the diseased artery and threaded to the blocked region. There the blockage may be either squeezed into a hopefully more open position by pressure from an inflated catheter balloon (balloon angioplasty), the blocked region may be kept open by a stent, or alternatively a physician may use a catheter to surgically remove the plaque from the inside of the artery (atherectomy).
As an example, for the treatment of PAD, atherectomy devices such as the Fox Hollow (now ev3) SilverHawk™ catheter (U.S. Pat. No. 6,027,514), are often used. These catheters may be threaded (usually with the aid of a guidewire) up the artery to a blocked region. There, the physician will usually position the catheter to make multiple passes through the blocked region of the artery, each time shaving a way a ribbon of plaque. The shaved ribbons of plaque are stored in the hollow nose of the device. By making multiple passes, the plaque may be substantially reduced, blood circulation may be restored to the limb, and the limb in turn saved from amputation.
In order to effectively treat the plaque, however, most modern catheters need to be threaded past the blocked region of the artery. This is because the active portions of most catheters, which are used to treat the blockage, are usually located on the side of the catheter, rather than on the tip of the catheter. This is due to simple mechanical necessity. The tip of the catheter must have a very small surface area, and thus is able to treat only a very small portion of the diseased artery. By contrast, the side of the catheter has a much larger surface area, and the catheter side thus conforms nicely to the sides of the diseased artery. Thus stents, balloons, atherectomy cutting tools, etc., are usually mounted on the sides of the catheter. The catheter must be threaded past the blocked portion of the artery in order to function properly.
When the artery is only partially blocked by plaque, the catheter can usually be maneuvered past the obstruction, and the active portions of the catheter can thus be brought into contact with the diseased portion of the artery. However when the artery is totally blocked, as is the case with a CTO, this option is no longer possible. The tip of the catheter encounters the obstruction, and further forward motion is blocked.
Simply trying to force a typical catheter past the obstruction usually isn't possible. The obstructions are typically composed of relatively tough fibrous material, which often also includes hard calcium deposits as well. Often, when physicians attempt to force guidewires or catheters past such obstructions, the guidewire or catheter device may instead exit the artery and enter the lumen outside the artery. This further damages the artery, further complicates the procedure, and decreases the chance of success. As previously discussed, the consequences of such procedure failures have a high mortality rate. Thus improved methods to allow catheters and guidewires to more readily penetrate through hardened plaque and CTO are thus of high medical importance.
A good summary of the present state of the art may be found in an article by Aziz and Ramsdale, “Chronic total occlusions—a stiff challenge requiring a major breakthrough: is there light at the end of the tunnel?” Heart 2005; 91; 42-48.
Previous attempts to produce devices for cutting through hardened plaque include U.S. Pat. No. 5,556,405 to Lary, No. 6,152,938 to Curry, and No. 6,730,063 to Delaney et al.
U.S. Pat. No. 5,556,405 teaches an incisor catheter which features a bladed head stored in a catheter housing, which contains a number of slits though which the blades protrude. The blade is activated by a push-pull catheter. When the push-pull catheter is pushed, the bladed head protrudes through the slits in the housing, and the blade thus comes into contact with hardened plaque material. The blade does not rotate, but rather delivers linear cuts.
U.S. Pat. No. 6,152,938 teaches a general purpose catheter drilling device for opening a wide variety of different blocked (occluded) tubes. The device anchors the tip of the drill head against a face of the occlusion, and partially rotates the drill head using a rein attached to the drill head so that the drill head faces at an angle.
U.S. Pat. No. 6,730,063 teaches a catheter device for chemically treating calcified vascular occlusions. The device is a fluid delivery catheter that delivers acidic solutions and other fluids to calcified plaque with the objective of chemically dissolving the calcified material.
Several catheter devices for traversing CTO obstructions are presently marketed by Cordis Corporation, FlowCardia Technology, Kensey Nash Corporation, and other companies. Cordis Corporation, a Johnson and Johnson Company, produces the Frontrunner® XP CTO catheter (formerly produced by LuMend Corporation). This catheter, discussed in U.S. Pat. No. 6,800,085 and other patents, has a front “jaw” that opens and closes as it traverses the catheter. The jaw itself does not cut, but rather attempts to pry open the CTO as the catheter passes.
Other catheter devices use various forms of directed energy to traverse CTOs. For example, FlowCardia Technology, Sunnyvale, Calif., produces the Crosser system, taught in U.S. Pat. No. 7,297,131 and other patents. This system uses an ultrasonic transducer to deliver energy to a non-cutting catheter head. This catheter head itself has a relatively small diameter and does not have any blades. Rather, the head, through rapid (ultrasonic) vibration is able to push its way through a variety of different occlusions.
Kensey Nash Corporation, Exton, Pa. (formerly Intraluminal Therapeutics, Inc.), produces the Safe-Cross CTO system. This system, taught in U.S. Pat. Nos. 6,852,109 and 7,288,087, uses radiofrequency (RF) energy. The catheter itself is also directed in its movement by an optical (near-infrared light) sensor which can sense when the tip of the catheter is near the wall of the artery. The optical sensor tells the operator how to steer the catheter, and the RF ablation unit helps the operator ablate material and cross occluded regions.
Although ingenious, the success rates with these devices still leave much to be desired. According to Aziz, the best reported success rates of overcoming CTOs with prior art devices range from 56% to 75%. Aziz further teaches that the average success rates are only in the 50-60% range. Given the huge negative impact that unsuccessfully cleared CTOs have on patient morbidity and mortality, clearly further improvement is desirable. An additional problem with these prior art CTO clearing devices is that simply cutting a small channel though the CTO may not be sufficient to totally resolve the medical problem. Occasionally, the device that traverses the CTO should also remove (debulk) a substantial portion of the occlusion. This is because as previously discussed, removal of a substantial portion of the occlusion may be required in order to allow catheters with side mounted stents, balloons, and atherectomy cutting tools to get access to the damaged portions of the artery and make more lasting repairs. Thus improved CTO “unclogging” devices that can do the more substantial amount of CTO debulking required to allow other types of catheters to pass are also desirable.
Thus there remains a need for devices that can effectively traverse CTOs and remove more substantial amounts of hardened or calcified plaque. Such devices would enable stents and other devices, such as SilverHawk atherectomy catheters, balloon catheters, etc. to be more successfully used in high occlusion situations. This in turn should lead to improved patient outcomes and a reduction in patient morbidity and mortality.
The present invention teaches a novel rotating cutting head catheter for creating a passage through refractory material, such as chronic total occlusions, refractory atherosclerotic plaque, gallstones, kidney stones, etc. from diseased arteries, veins, or other body lumens. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath head when not in use, and this sheath head is mounted on the distal end of the catheter.
The outer protective sheath head contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner torque communicating connector (a catheter or wire or coil, or any torque communicating mechanism attached to the cutting head) applies spin to the cutting head, and the force of the sheath head's helical grooves against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. In some embodiments, the center of the catheter and even the cutting head itself may be hollow, and the device may use a guidewire to direct the catheter and the cutting head to the desired position. Alternatively the guidewire may be attached to a guide that is attached to the outside of the catheter tube. In at least some embodiments, this sheath head acts as motion stop, and may contain one or more motion stop elements (such as a mechanical barrier) designed to restrict the forward extension of the cutting head.
Depending upon the angle and nature of the cutting head's protruding blades, the blades may either be designed to simply cut thorough the occluding material, without actually dislodging the occluding material from the body lumen, or alternatively the blades may be designed to both cut through the occluding material, and sever its link to the body lumen, thereby dislodging the occluding material from the body lumen. In this case, the cutting head can act to actually remove (debulk) a substantial portion of the occlusion.
Although, throughout this discussion, applications of this device for creating a passage through refractory atherosclerotic plaque from arteries, particularly coronary or peripheral limb arteries, are frequently used as examples, it should be understood that these particular examples are not intended to be limiting. Other applications for the present technology may include removal of kidney stones, in which case the device will be intended to traverse the ureters; gallstones, in which case the device will be intended to traverse the bile duct; enlarged prostate blockage of the urethra, in which case the device will be intended to traverse the urethra; blocked fallopian tubes, in which case the device will be intended to traverse the fallopian tubes; treatment of blood clots, removal of material trapped in the lungs, etc. In general, any unwanted material occupying space in a body lumen may be surgically removed by these techniques. Similarly, although use in human patients is cited in most examples, it should be evident that the same techniques may be useful in animals as well.
Helical drill bits and self-tapping screw bits are widely known to be highly effective at penetrating through materials as soft as wax and as refractory as rock and metal, and indeed such devices are widely used for such purposes. Although effective, drill bits are typically considered to be both powerful and extremely crude. As anyone who has ever attempted to use an electric drill can attest, drill devices, although admittedly effective at removing material, would seem to be totally unsuited for delicate vascular surgery, particularly at sites hidden deep within the body. Helical self-tapping screw bits are designed slightly differently. Although just as effective at cutting through various materials, drill bits are configured to both cut and then remove the material, while self-tapping screw bits are designed primarily for cutting a passage through the material. For either type of device, the problem is not the efficacy of cutting or occlusion removal; the problem is one of preventing inadvertent damage to the surrounding artery.
Surprisingly however, the present invention teaches that if the prejudice against such crude and powerful methods is overcome, and suitable protection and control devices are devised to control the crude and apparently overwhelming power of such “drill bit” devices, catheter “drill bit” devices suitable for delicate vascular surgery, which are both powerful at cutting or removing occlusions, yet specific enough to avoid unwanted damage to artery walls, may be produced.
Thus, in a first aspect of the present invention, the superior material cutting/removing properties of a “drill bit” like material removal device (or self-threading helical screw bit) are combined with suitable protection and catheter guidance mechanisms which allow such powerful cutting devices to be safely and effectively used within the confines of delicate arteries and other body lumens.
To do this, precise control must be exerted over the cutting edge of the “drill bit”. The bit or “cutting head” should normally be sheathed or shielded from contact with artery walls, so that inadvertent damage to artery walls can be avoided while the head of the catheter is being threaded to the artery to the occluded region. Once at the occlusion, the cutting portion of the cutting head (bit) should be selectively exposed only to the minimal extent needed to perform the relevant occlusion cutting activity. The rotation direction of the cutting head may optionally be varied, for example by rotating the head counter-clockwise to produce a blunt dissection through the obstacle or occlusion, and then clockwise while pulling back on the entire assembly. Once the desired cuts are made, the cutting head should then be quickly returned to its protective sheath. The entire device should operate within the millimeter diameters of a typical artery, and should be capable of being threaded on a catheter for a considerable distance into the body.
Suitable techniques to achieve these objectives are taught in the following figures and examples.
In the closed configuration, the rotating cutting head (108) is retracted inside the sheath head portion of catheter head (106) and the cutting edges or projections (202) from the cutting head (108) fit into helical slots or grooves (208). This sheathed configuration prevents projecting side cutting edges (202) and front cutting edges (204) from accidentally contacting the walls of the artery.
As should be clear, the cutting edge of the “drill bit/screw-thread” like cutting head can easily damage artery lining (306). In order to avoid such accidental damage, precise control over the extent of cutting head exposure is needed. Methods to achieve such precise control are shown in
In (410), the cutting head is shown in its fully retracted position. Normally the cutting head will be stored in this fully retracted position so that it can be introduced into the artery via a guidewire, and be directed to the occlusion or plaque region, without damaging non-target regions of the artery. Note that the coupling (406) is in the fully distal position in the sheath head portion of catheter head (106), and that the protruding cutting blades (202) of cutting head (108) are fully screwed into helical screw slots (208).
In some situations, a guidewire [
In use, the catheter head (106) and catheter tube (102) are attached to the guidewire and are then introduced into the artery via an appropriate incision. The catheter handle (104) will remain outside of the body. The location of the obstruction will generally be known, and in fact the obstruction may be imaged by fluoroscopy or other technique. Catheter head (106) is brought up against the obstruction, and the operator will then apply torque, often via a device mounted on catheter handle (104). This torque is usually transmitted to the catheter head (106) via an inner torque conducting catheter or wire (408), here termed a “torque communicating connector”. Usually outer catheter (102) will not conduct torque. Outer catheter (102) remains approximately stationary (i.e. does not rotate) and similarly the sheath head portion of catheter head (106) and the helical screw slots or grooves (208) also do not rotate.
The torque is communicated via coupling (406) to cutting head (108). This torque essentially causes cutting head (108) to “unscrew” from its retracted position in the sheath head portion of catheter head (106) via the action of the protruding blade edges (202) against helical slots or grooves (208). This “unscrewing” circular motion is shown by the curved arrow (412). As cutting head (108) unscrews, it starts to advance and protrude outside of the protective sheath head shroud.
In (420), the cutting head (108) is now shown in a partially unscrewed or partially extended position. Note that the protruding blade edges (202) have moved relative to the helical sheath head screw slots or grooves (208). Thus the blade edges (202) are now partially unscrewed from the helical screw slots (208) and are partially exposed. Cutting head (108) now is protruding out from the sheath head portion of catheter head casing or shroud (106), and the coupling (406) has moved partially toward the distal end of the catheter.
It should be evident that by reversing the direction of the torque, the cutting head may be again retracted into the sheath head when this is desired. The catheter can be repositioned for another cut, and the process of cutting head extension, cutting, and retraction can be repeated as many times as necessary.
Thus the present invention controls the aggressive cutting power of the “drill bit” cutting head by exposing only as much of the cutting head at a time as needed for the task at hand.
The sheath head portion of catheter head (106) will normally be between about 1 to 2.2 millimeters in diameter, and the catheter body (102) will typically also have a diameter of approximately 1 to 3 millimeters (3-9 French), and a length between 50 and 200 cm. The sheath head may be made from various materials such as hard plastics, metals, or composite materials. Examples of such materials include NiTi steel, platinum/iridium or stainless steel.
Although sheath head (106) contains slots or grooves designed to impart forward motion to cutting head (108) when cutting head is rotated, and although these slots or grooves are referred to as “helical” grooves or slots, due to the short length of the sheath head and overall catheter head, the slots or grooves do not have to be in the exact mathematical shape of a helix. In fact a variety of shapes that differ somewhat from a mathematically pure helix configuration will suffice. In general, the slot or groove must be such that torque applied to the cutting head causes the cutting head to both rotate and advance, and any such slot or groove is here designated as a “helical” slot or groove. Also, for this discussion, a “slot” is considered to be an opening that extends from the inside to the outside of the hollow catheter head (106), while a “groove” is similar to a rifle groove in that a “groove” does not extend all the way from the inside of the hollow sheath head to the outside, but rather only penetrates partway through the sheath head material.
The cutting head (108) will often be made of materials such as steel, carbide, or ceramic. The blades of the cutting head (202), (204) can optionally be hardened by coating with tungsten carbide, ME-92, etc. Materials suitable for this purpose are taught in U.S. Pat. Nos. 4,771,774; 5,312,425; and 5,674,232. The angle of the blades and the details of their design will differ depending upon if the head is intended to simply cut through the occluding material, of if it is intended to cut through and actually remove (debulk) portions of the occlusion. For example, blades intended for to remove material may curve at an angle such that they will tend to sever the link between the occluding material and the body lumen, while blades intended just for cutting will have an alternate angle that tends not to sever this link.
In some embodiments, the catheter may be composed of two different tubes. In this configuration, there may be an outer catheter tube (102), which will often be composed of a flexible biocompatible material. There may also be an inner tube (408) chosen for its ability to transmit torque from the catheter handle (104) to the cutting head (108) (via coupling (406)). The inner torque transmitting tube (which is one possible type of “torque communicating connector”) is able to twist relative to the outer catheter tube so that when torque is applied to the inner tube at the handle end (104), the cutting head (108) will rotate, but the catheter sheath head itself, which is connected to the outer catheter tube, will remain roughly stationary. Alternatively a cable may be used in place of inner tube (408).
The outer catheter body (102) may often be made from organic polymer materials extruded for this purpose, such as polyester, polytetrafluoroethylene (PTFE), polyurethane, polyvinylchloride, silicon rubber, and the like. The inner torque conducting catheter (408) may be composed of these materials or alternatively may be composed from metal coils, wires, or filaments.
In many embodiments, the catheter will be designed to be compatible with a monorail guidewire that has a diameter of about 0.014″, or between 0.010″ and 0.032″. For example, the outer catheter jacket may contain attached external guides for the monorail guidewire. In this case, the guidewire may exit these external guides either prior to the catheter head, or midway through the catheter head. Alternatively, the catheter may be hollow, and be located over the guidewire for the entire length of the catheter.
The catheter handle (104) will normally attach to both outer catheter tube (102), and inner tube or cable (408). Usually handle (104) will contain at least a knob, dial, or lever that allows the operator to apply torque to the inner torque transmitting tube or cable (408). In some embodiments, sensors may be used to determine how much the cutting head (108) has rotated or extended relative to the sheath head portion of catheter head (106), and these sensors, possibly aided by a mechanical or electronic computation and display mechanism, may show the operator how much the cutting head has rotated and or extended.
In some embodiments, the catheter handle (104) will be designed with knobs or levers coupled to mechanical mechanisms (such as gears, torque communicating bands, etc.) that manually rotate and advance/retract the catheter tip, and the operator will manually control the tip with gentle slow rotation or movement of these knobs or levers. In other embodiments the catheter handle will contain a mechanism, such as an electronic motor, and a control means, such as a button or trigger, that will allow the user to rotate and advance the cutting head in a precise and controlled manner. This mechanism may, for example, consist of a microprocessor or feedback controlled motor, microprocessor, and software that may act to receive information from a cutting head rotation or extension sensor, and use this rotation feedback data, in conjunction with operator instructions delivered by the button or trigger, to advance or retract the cutting head by a precise amount for each operator command. This way the operator need not worry about any errors induced by the spring action of the inner torque transmitting tube or cable (408). The microprocessor (or other circuit) controlled motor can automatically compensate for these errors, translate button or trigger presses into the correct amount of torque, and implement the command without requiring further operator effort. Alternatively non-microprocessor methods, such as a vernier or a series of guided markings, etc., may be used to allow the operator to compensate for differences in the rotation of the torque communicating connector and the rotation of the cutting head, or for the extent that which said cutting head exits said hollow sheath head.
In some embodiments, the catheter head may be equipped with additional sensors, such as ultrasonic sensors to detect calcified material, optical (near infrared) sensors to detect occlusions or artery walls, or other medically relevant sensors. If these sensors are employed, in some cases it may be convenient to locate the driving mechanisms for these sensors in the catheter handle (104) as well.
Additional means to improve the efficacy of the cutting head may also be employed. Thus the cutting head may be configured to vibrate at high (ultrasonic) frequency, perform radiofrequency (RF) tissue ablation, generate localized areas of intense heat, conduct cutting light (e.g. laser or excimer laser), or other directed energy means.
The cutting head may be composed of alternative designs and materials, and these designs and materials may be selected to pick the particular problem at hand. As an example, a cutting head appropriate for use against a calcified obstruction may differ from the cutting head appropriate for use against a non-calcified obstruction. Similarly the cutting head appropriate for use against a highly fibrous obstruction may be less appropriate against a less fibrous and fattier obstruction. The length or size of the obstruction may also influence head design.
Although multiple catheters, each composed of a different type of cutting head, may be one way to handle this type of problem, in other cases, a kit composed of a single catheter and multiple cutting heads (108) and optionally multiple sheath heads (106) may be more cost effective. In this type of situation, the cutting heads (108) may be designed to be easily mounted and dismounted from coupling (406). A physician could view the obstruction by fluoroscopy or other technique, and chose to mount the cutting head design (and associated sheath head design) best suited for the problem at hand. Alternatively, if the blades (202), (204) on cutting head (108) have become dull or chipped from use during a procedure, a physician may chose to replace dull or chipped cutting head (108) with a fresh cutting head, while continuing to use the rest of the catheter.
For some applications, it may also be useful to supply various visualization dyes or therapeutic agents to the obstruction using the catheter. Here, the dye or therapeutic agent may be applied by either sending this dye up to the catheter head through the space between the exterior catheter (102) and the interior torque catheter (408), or alternatively if torque catheter (408) is hollow, through the interior of torque catheter (408). If cutting head (108) also has a hollow opening (206), then the dye or therapeutic agent may be applied directly to the obstruction, even while cutting head (108) is cutting through the obstruction.
Examples of useful dyes and therapeutic agents to apply include fluoroscopic, ultrasonic, MRI, fluorescent, or luminescent tracking and visualization dyes, anticoagulants (e.g. heparin, low molecular weight heparin), thrombin inhibitors, anti-platelet agents (e.g. cyclooxygenase inhibitors, ADP receptor inhibitors, phosphodiesterase inhibitors, Glycoprotein IIB/IIIA inhibitors, adenosine reuptake inhibitors), anti-thromboplastin agents, anti-clot agents such as thrombolytics (e.g. tissue plasminogen activator, urokinase, streptokinase), lipases, monoclonal antibodies, and the like.
In some embodiments, it may be useful to construct the cutting head out of a material that has a radiopaque signature (different appearance under X-rays) that differs from the material used to construct the hollow sheath head portion of the catheter head. This will allow the physician to directly visualize, by fluoroscopic or other x-ray imaging technique, exactly how far the cutting head has advanced outside of the catheter sheath head.
This application is a continuation of U.S. patent application Ser. No. 13/752,325, filed Jan. 28, 2013, entitled “CATHETER SYSTEM AND METHOD FOR BORING THROUGH BLOCKED VASCULAR PASSAGES”, which is a continuation of U.S. patent application Ser. No. 13/277,167, filed on Oct. 19, 2011, entitled “CATHETER SYSTEM AND METHOD FOR BORING THROUGH BLOCKED VASCULAR PASSAGES”, now U.S. Pat. No. 8,361,097 B2, which is a continuation of U.S. patent application Ser. No. 12/108,433, filed on Apr. 23, 2008, entitled “CATHETER SYSTEM AND METHOD FOR BORING THROUGH BLOCKED VASCULAR PASSAGES”, now U.S. Pat. No. 8,062,316 B2, each of which is incorporated herein by reference in its entirety.
Number | Name | Date | Kind |
---|---|---|---|
3367727 | Ward et al. | Feb 1968 | A |
3908637 | Doroshow | Sep 1975 | A |
4178935 | Gekhaman et al. | Dec 1979 | A |
4487206 | Aagard | Dec 1984 | A |
4527553 | Upsher | Jul 1985 | A |
4552554 | Gould et al. | Nov 1985 | A |
4611600 | Cohen | Sep 1986 | A |
4621353 | Hazel et al. | Nov 1986 | A |
4639091 | Huignard et al. | Jan 1987 | A |
4654024 | Crittenden et al. | Mar 1987 | A |
4681106 | Kensey et al. | Jul 1987 | A |
4686982 | Nash | Aug 1987 | A |
4691708 | Kane | Sep 1987 | A |
4771774 | Simpson et al. | Sep 1988 | A |
4841977 | Griffith et al. | Jun 1989 | A |
4857046 | Stevens et al. | Aug 1989 | A |
4920961 | Grossi et al. | May 1990 | A |
4926858 | Gifford, III et al. | May 1990 | A |
5000185 | Yock | Mar 1991 | A |
5018529 | Tenerz et al. | May 1991 | A |
5041082 | Shiber | Aug 1991 | A |
5047040 | Simpson et al. | Sep 1991 | A |
5085662 | Willard | Feb 1992 | A |
5099850 | Matsui et al. | Mar 1992 | A |
5178153 | Einzig | Jan 1993 | A |
5182291 | Gubin et al. | Jan 1993 | A |
5190050 | Nitzsche | Mar 1993 | A |
5192291 | Pannek, Jr. | Mar 1993 | A |
5312415 | Palermo | May 1994 | A |
5312425 | Evans et al. | May 1994 | A |
5321501 | Swanson et al. | Jun 1994 | A |
5333142 | Scheps | Jul 1994 | A |
5358472 | Vance et al. | Oct 1994 | A |
5366464 | Belknap | Nov 1994 | A |
5372601 | Lary | Dec 1994 | A |
5383460 | Jang et al. | Jan 1995 | A |
5383467 | Auer et al. | Jan 1995 | A |
5425273 | Chevalier | Jun 1995 | A |
5429136 | Milo et al. | Jul 1995 | A |
5431673 | Summers et al. | Jul 1995 | A |
5437284 | Trimble | Aug 1995 | A |
5459570 | Swanson et al. | Oct 1995 | A |
5460168 | Masubuchi et al. | Oct 1995 | A |
5465147 | Swanson | Nov 1995 | A |
5507795 | Chiang et al. | Apr 1996 | A |
5517998 | Madison | May 1996 | A |
5556405 | Lary | Sep 1996 | A |
5607394 | Andersen et al. | Mar 1997 | A |
5620426 | Braithwaite | Apr 1997 | A |
5632754 | Farley et al. | May 1997 | A |
5632755 | Nordgren et al. | May 1997 | A |
5674232 | Halliburton | Oct 1997 | A |
5681336 | Clement et al. | Oct 1997 | A |
5690634 | Muller et al. | Nov 1997 | A |
5722403 | McGee et al. | Mar 1998 | A |
5728148 | Bostrom et al. | Mar 1998 | A |
5795295 | Hellmuth et al. | Aug 1998 | A |
5807339 | Bostrom et al. | Sep 1998 | A |
5830145 | Tenhoff | Nov 1998 | A |
5836957 | Schulz et al. | Nov 1998 | A |
5843050 | Jones et al. | Dec 1998 | A |
5843103 | Wulfman | Dec 1998 | A |
5851212 | Zirps et al. | Dec 1998 | A |
5868778 | Gershony et al. | Feb 1999 | A |
5872879 | Hamm | Feb 1999 | A |
5904651 | Swanson et al. | May 1999 | A |
5907425 | Dickensheets et al. | May 1999 | A |
5935075 | Casscells et al. | Aug 1999 | A |
5938602 | Lloyd | Aug 1999 | A |
5938671 | Katoh et al. | Aug 1999 | A |
5951482 | Winston et al. | Sep 1999 | A |
5951581 | Saadat et al. | Sep 1999 | A |
5951583 | Jensen et al. | Sep 1999 | A |
5956355 | Swanson et al. | Sep 1999 | A |
5957952 | Gershony et al. | Sep 1999 | A |
5987995 | Sawatari et al. | Nov 1999 | A |
5997558 | Nash | Dec 1999 | A |
6001112 | Taylor | Dec 1999 | A |
6007530 | Dornhofer et al. | Dec 1999 | A |
6010449 | Selmon et al. | Jan 2000 | A |
6013072 | Winston et al. | Jan 2000 | A |
6017359 | Gershony et al. | Jan 2000 | A |
6027514 | Stine et al. | Feb 2000 | A |
6032673 | Savage et al. | Mar 2000 | A |
6048349 | Winston et al. | Apr 2000 | A |
6080170 | Nash et al. | Jun 2000 | A |
6106515 | Winston et al. | Aug 2000 | A |
6110164 | Vidlund | Aug 2000 | A |
6120515 | Rogers et al. | Sep 2000 | A |
6120516 | Selmon et al. | Sep 2000 | A |
6134002 | Stimson et al. | Oct 2000 | A |
6134003 | Tearney et al. | Oct 2000 | A |
6152938 | Curry | Nov 2000 | A |
6152951 | Hashimoto et al. | Nov 2000 | A |
6160826 | Swanson et al. | Dec 2000 | A |
6175669 | Colston et al. | Jan 2001 | B1 |
6176871 | Pathak et al. | Jan 2001 | B1 |
6183432 | Milo | Feb 2001 | B1 |
6193676 | Winston et al. | Feb 2001 | B1 |
6206898 | Honeycutt et al. | Mar 2001 | B1 |
6228076 | Winston et al. | May 2001 | B1 |
6241744 | Imran et al. | Jun 2001 | B1 |
6283957 | Hashimoto et al. | Sep 2001 | B1 |
6285903 | Rosenthal et al. | Sep 2001 | B1 |
6290668 | Gregory et al. | Sep 2001 | B1 |
6294775 | Seibel et al. | Sep 2001 | B1 |
6299622 | Snow et al. | Oct 2001 | B1 |
6307985 | Murakami et al. | Oct 2001 | B1 |
6375615 | Flaherty et al. | Apr 2002 | B1 |
6402719 | Ponzi et al. | Jun 2002 | B1 |
6416527 | Berg et al. | Jul 2002 | B1 |
6445939 | Swanson et al. | Sep 2002 | B1 |
6445944 | Ostrovsky | Sep 2002 | B1 |
6447525 | Follmer et al. | Sep 2002 | B2 |
6451036 | Heitzmann et al. | Sep 2002 | B1 |
6454717 | Pantages et al. | Sep 2002 | B1 |
6454779 | Taylor | Sep 2002 | B1 |
6482216 | Hiblar et al. | Nov 2002 | B1 |
6482217 | Pintor et al. | Nov 2002 | B1 |
6485413 | Boppart et al. | Nov 2002 | B1 |
6497649 | Parker et al. | Dec 2002 | B2 |
6501551 | Tearney et al. | Dec 2002 | B1 |
6503261 | Bruneau et al. | Jan 2003 | B1 |
6511458 | Milo et al. | Jan 2003 | B2 |
6517528 | Pantages et al. | Feb 2003 | B1 |
6542665 | Reed et al. | Apr 2003 | B2 |
6544230 | Flaherty et al. | Apr 2003 | B1 |
6546272 | MacKinnon et al. | Apr 2003 | B1 |
6551302 | Rosinko et al. | Apr 2003 | B1 |
6563105 | Seibel et al. | May 2003 | B2 |
6564087 | Pitris et al. | May 2003 | B1 |
6565588 | Clement et al. | May 2003 | B1 |
6572563 | Ouchi et al. | Jun 2003 | B2 |
6572643 | Gharibadeh | Jun 2003 | B1 |
6575995 | Huter et al. | Jun 2003 | B1 |
6579298 | Bruneau et al. | Jun 2003 | B1 |
6615071 | Casscells, III et al. | Sep 2003 | B1 |
6629953 | Boyd | Oct 2003 | B1 |
6638233 | Corvi et al. | Oct 2003 | B2 |
6645217 | MacKinnon et al. | Nov 2003 | B1 |
6657727 | Izatt et al. | Dec 2003 | B1 |
6666874 | Heitzmann et al. | Dec 2003 | B2 |
6687010 | Horii | Feb 2004 | B1 |
6728571 | Barbato | Apr 2004 | B1 |
D489973 | Root et al. | May 2004 | S |
6730063 | Delaney et al. | May 2004 | B2 |
6758854 | Butler et al. | Jul 2004 | B1 |
6760112 | Reed et al. | Jul 2004 | B2 |
6800085 | Selmon et al. | Oct 2004 | B2 |
6818001 | Wulfman et al. | Nov 2004 | B2 |
6824550 | Noriega et al. | Nov 2004 | B1 |
6830577 | Nash et al. | Dec 2004 | B2 |
6845190 | Smithwick et al. | Jan 2005 | B1 |
6852109 | Winston et al. | Feb 2005 | B2 |
6853457 | Bjarklev et al. | Feb 2005 | B2 |
6856712 | Fauver et al. | Feb 2005 | B2 |
6867753 | Chinthammit et al. | Mar 2005 | B2 |
6879851 | McNamara et al. | Apr 2005 | B2 |
6947787 | Webler | Sep 2005 | B2 |
6961123 | Wang et al. | Nov 2005 | B1 |
6970732 | Winston et al. | Nov 2005 | B2 |
6975898 | Seibel | Dec 2005 | B2 |
7068878 | Crossman-Bosworth et al. | Jun 2006 | B2 |
7074231 | Jang | Jul 2006 | B2 |
7126693 | Everett et al. | Oct 2006 | B2 |
7172610 | Heitzmann et al. | Feb 2007 | B2 |
7242480 | Alphonse | Jul 2007 | B2 |
7261687 | Yang | Aug 2007 | B2 |
7288087 | Winston et al. | Oct 2007 | B2 |
7291146 | Steinke et al. | Nov 2007 | B2 |
7297131 | Nita | Nov 2007 | B2 |
7311723 | Seibel et al. | Dec 2007 | B2 |
7344546 | Wulfman et al. | Mar 2008 | B2 |
7366376 | Shishkov et al. | Apr 2008 | B2 |
7382949 | Bouma et al. | Jun 2008 | B2 |
7426036 | Feldchtein et al. | Sep 2008 | B2 |
7428001 | Schowengerdt et al. | Sep 2008 | B2 |
7428053 | Feldchtein et al. | Sep 2008 | B2 |
7455649 | Root et al. | Nov 2008 | B2 |
7474407 | Gutin | Jan 2009 | B2 |
7485127 | Nistal | Feb 2009 | B2 |
7488340 | Kauphusman et al. | Feb 2009 | B2 |
7530948 | Seibel et al. | May 2009 | B2 |
7530976 | MacMahon et al. | May 2009 | B2 |
7538859 | Tearney et al. | May 2009 | B2 |
7538886 | Feldchtein | May 2009 | B2 |
7539362 | Teramura | May 2009 | B2 |
7542145 | Toida et al. | Jun 2009 | B2 |
7544162 | Ohkubo | Jun 2009 | B2 |
7545504 | Buckland et al. | Jun 2009 | B2 |
7555333 | Wang et al. | Jun 2009 | B2 |
7577471 | Camus et al. | Aug 2009 | B2 |
7583872 | Seibel et al. | Sep 2009 | B2 |
7616986 | Seibel et al. | Nov 2009 | B2 |
7637885 | Maschke | Dec 2009 | B2 |
7674253 | Fisher et al. | Mar 2010 | B2 |
7682319 | Martin et al. | Mar 2010 | B2 |
7706863 | Imanishi et al. | Apr 2010 | B2 |
7728985 | Feldchtein et al. | Jun 2010 | B2 |
7729745 | Maschke | Jun 2010 | B2 |
7734332 | Sher | Jun 2010 | B2 |
7738945 | Fauver et al. | Jun 2010 | B2 |
7753852 | Maschke | Jul 2010 | B2 |
7771425 | Dycus et al. | Aug 2010 | B2 |
7785286 | Magnin et al. | Aug 2010 | B2 |
7813609 | Petersen et al. | Oct 2010 | B2 |
7821643 | Amazeen et al. | Oct 2010 | B2 |
7824089 | Charles | Nov 2010 | B2 |
7840283 | Bush et al. | Nov 2010 | B1 |
7944568 | Teramura et al. | May 2011 | B2 |
7952718 | Li et al. | May 2011 | B2 |
7972299 | Carter et al. | Jul 2011 | B2 |
8059274 | Splinter | Nov 2011 | B2 |
8062316 | Patel et al. | Nov 2011 | B2 |
8068921 | Prakash et al. | Nov 2011 | B2 |
8361097 | Patel et al. | Jan 2013 | B2 |
8548571 | He et al. | Oct 2013 | B2 |
8548603 | Swoyer et al. | Oct 2013 | B2 |
8644913 | Simpson et al. | Feb 2014 | B2 |
8647335 | Markus | Feb 2014 | B2 |
8696695 | Patel et al. | Apr 2014 | B2 |
8911459 | Simpson et al. | Dec 2014 | B2 |
9125562 | Spencer et al. | Sep 2015 | B2 |
9333007 | Escudero et al. | May 2016 | B2 |
9345398 | Tachibana et al. | May 2016 | B2 |
9345406 | Spencer et al. | May 2016 | B2 |
9345510 | Patel et al. | May 2016 | B2 |
9498247 | Patel et al. | Nov 2016 | B2 |
9498600 | Rosenthal et al. | Nov 2016 | B2 |
9557156 | Kankaria | Jan 2017 | B2 |
9572492 | Simpson et al. | Feb 2017 | B2 |
9592075 | Simpson et al. | Mar 2017 | B2 |
9642646 | Patel et al. | May 2017 | B2 |
9788790 | Black et al. | Oct 2017 | B2 |
9854979 | Smith et al. | Jan 2018 | B2 |
9918734 | Patel et al. | Mar 2018 | B2 |
9949754 | Newhauser et al. | Apr 2018 | B2 |
20010005788 | McGuckin, Jr. | Jun 2001 | A1 |
20010020126 | Swanson et al. | Sep 2001 | A1 |
20020019644 | Hastings et al. | Feb 2002 | A1 |
20020072706 | Hiblar et al. | Jun 2002 | A1 |
20020082585 | Carroll et al. | Jun 2002 | A1 |
20020082626 | Donohoe et al. | Jun 2002 | A1 |
20020111548 | Swanson et al. | Aug 2002 | A1 |
20020115931 | Strauss et al. | Aug 2002 | A1 |
20020147459 | Bashiri et al. | Oct 2002 | A1 |
20020158547 | Wood | Oct 2002 | A1 |
20030002038 | Mawatari | Jan 2003 | A1 |
20030028100 | Tearney et al. | Feb 2003 | A1 |
20030032880 | Moore | Feb 2003 | A1 |
20030045835 | Anderson et al. | Mar 2003 | A1 |
20030095248 | Frot | May 2003 | A1 |
20030097044 | Rovegno | May 2003 | A1 |
20030120150 | Govari | Jun 2003 | A1 |
20030120295 | Simpson et al. | Jun 2003 | A1 |
20030125756 | Shturman et al. | Jul 2003 | A1 |
20030125757 | Patel et al. | Jul 2003 | A1 |
20030125758 | Simpson et al. | Jul 2003 | A1 |
20030139751 | Evans et al. | Jul 2003 | A1 |
20030181855 | Simpson et al. | Sep 2003 | A1 |
20040002650 | Mandrusov et al. | Jan 2004 | A1 |
20040039371 | Tockman et al. | Feb 2004 | A1 |
20040057667 | Yamada et al. | Mar 2004 | A1 |
20040059257 | Gaber | Mar 2004 | A1 |
20040082850 | Bonner et al. | Apr 2004 | A1 |
20040092915 | Levatter | May 2004 | A1 |
20040093001 | Hamada | May 2004 | A1 |
20040147934 | Kiester | Jul 2004 | A1 |
20040167553 | Simpson et al. | Aug 2004 | A1 |
20040167554 | Simpson et al. | Aug 2004 | A1 |
20040181249 | Torrance et al. | Sep 2004 | A1 |
20040186368 | Ramzipoor et al. | Sep 2004 | A1 |
20040202418 | Ghiron et al. | Oct 2004 | A1 |
20040220519 | Wulfman et al. | Nov 2004 | A1 |
20040230212 | Wulfman | Nov 2004 | A1 |
20040230213 | Wulfman et al. | Nov 2004 | A1 |
20040236312 | Nistal et al. | Nov 2004 | A1 |
20040243162 | Wulfman et al. | Dec 2004 | A1 |
20040254599 | Lipoma et al. | Dec 2004 | A1 |
20040260236 | Manning et al. | Dec 2004 | A1 |
20050020925 | Kleen et al. | Jan 2005 | A1 |
20050043614 | Huizenga et al. | Feb 2005 | A1 |
20050054947 | Goldenberg | Mar 2005 | A1 |
20050075660 | Chu et al. | Apr 2005 | A1 |
20050085708 | Fauver et al. | Apr 2005 | A1 |
20050085721 | Fauver et al. | Apr 2005 | A1 |
20050105097 | Fang-Yen et al. | May 2005 | A1 |
20050141843 | Warden et al. | Jun 2005 | A1 |
20050154407 | Simpson | Jul 2005 | A1 |
20050159712 | Andersen | Jul 2005 | A1 |
20050159731 | Lee | Jul 2005 | A1 |
20050171478 | Selmon et al. | Aug 2005 | A1 |
20050177068 | Simpson | Aug 2005 | A1 |
20050182295 | Soper et al. | Aug 2005 | A1 |
20050187571 | Maschke | Aug 2005 | A1 |
20050192496 | Maschke | Sep 2005 | A1 |
20050201662 | Petersen et al. | Sep 2005 | A1 |
20050203553 | Maschke | Sep 2005 | A1 |
20050222519 | Simpson | Oct 2005 | A1 |
20050222663 | Simpson et al. | Oct 2005 | A1 |
20050251116 | Steinke et al. | Nov 2005 | A1 |
20060011820 | Chow-Shing et al. | Jan 2006 | A1 |
20060032508 | Simpson | Feb 2006 | A1 |
20060046235 | Alexander | Mar 2006 | A1 |
20060049587 | Cornwell | Mar 2006 | A1 |
20060064009 | Webler et al. | Mar 2006 | A1 |
20060084911 | Belef et al. | Apr 2006 | A1 |
20060109478 | Tearney et al. | May 2006 | A1 |
20060135870 | Webler | Jun 2006 | A1 |
20060173475 | Lafontaine et al. | Aug 2006 | A1 |
20060229646 | Sparks | Oct 2006 | A1 |
20060229659 | Gifford et al. | Oct 2006 | A1 |
20060235262 | Arnal et al. | Oct 2006 | A1 |
20060235366 | Simpson | Oct 2006 | A1 |
20060236019 | Soito et al. | Oct 2006 | A1 |
20060239982 | Simpson | Oct 2006 | A1 |
20060241503 | Schmitt et al. | Oct 2006 | A1 |
20060244973 | Yun et al. | Nov 2006 | A1 |
20060252993 | Freed et al. | Nov 2006 | A1 |
20060264741 | Prince | Nov 2006 | A1 |
20060264743 | Kleen et al. | Nov 2006 | A1 |
20060264907 | Eskridge et al. | Nov 2006 | A1 |
20070010840 | Rosenthal et al. | Jan 2007 | A1 |
20070015969 | Feldman et al. | Jan 2007 | A1 |
20070015979 | Redel | Jan 2007 | A1 |
20070035855 | Dickensheets | Feb 2007 | A1 |
20070038061 | Huennekens et al. | Feb 2007 | A1 |
20070038125 | Kleen et al. | Feb 2007 | A1 |
20070038173 | Simpson | Feb 2007 | A1 |
20070078469 | Soito et al. | Apr 2007 | A1 |
20070078500 | Ryan et al. | Apr 2007 | A1 |
20070081166 | Brown et al. | Apr 2007 | A1 |
20070088230 | Terashi et al. | Apr 2007 | A1 |
20070106155 | Goodnow et al. | May 2007 | A1 |
20070135712 | Maschke | Jun 2007 | A1 |
20070167710 | Unal et al. | Jul 2007 | A1 |
20070196926 | Soito et al. | Aug 2007 | A1 |
20070219484 | Straub | Sep 2007 | A1 |
20070250080 | Jones et al. | Oct 2007 | A1 |
20070255252 | Mehta | Nov 2007 | A1 |
20070270647 | Nahen et al. | Nov 2007 | A1 |
20070276419 | Rosenthal | Nov 2007 | A1 |
20070288036 | Seshadri | Dec 2007 | A1 |
20070299309 | Seibel et al. | Dec 2007 | A1 |
20080004643 | To et al. | Jan 2008 | A1 |
20080004644 | To et al. | Jan 2008 | A1 |
20080004645 | To et al. | Jan 2008 | A1 |
20080004646 | To et al. | Jan 2008 | A1 |
20080015491 | Bei et al. | Jan 2008 | A1 |
20080027334 | Langston | Jan 2008 | A1 |
20080033396 | Danek et al. | Feb 2008 | A1 |
20080045986 | To et al. | Feb 2008 | A1 |
20080049234 | Seitz | Feb 2008 | A1 |
20080058629 | Seibel et al. | Mar 2008 | A1 |
20080065124 | Olson | Mar 2008 | A1 |
20080065125 | Olson | Mar 2008 | A1 |
20080065205 | Nguyen et al. | Mar 2008 | A1 |
20080095421 | Sun et al. | Apr 2008 | A1 |
20080103439 | Torrance et al. | May 2008 | A1 |
20080103446 | Torrance et al. | May 2008 | A1 |
20080103516 | Wulfman et al. | May 2008 | A1 |
20080132929 | O'Sullivan et al. | Jun 2008 | A1 |
20080139897 | Ainsworth et al. | Jun 2008 | A1 |
20080146942 | Dala-Krishna | Jun 2008 | A1 |
20080147000 | Seibel et al. | Jun 2008 | A1 |
20080154293 | Taylor et al. | Jun 2008 | A1 |
20080177138 | Courtney et al. | Jul 2008 | A1 |
20080186501 | Xie | Aug 2008 | A1 |
20080221388 | Seibel et al. | Sep 2008 | A1 |
20080228033 | Tumlinson et al. | Sep 2008 | A1 |
20080243030 | Seibel et al. | Oct 2008 | A1 |
20080243031 | Seibel et al. | Oct 2008 | A1 |
20080262312 | Carroll et al. | Oct 2008 | A1 |
20080275485 | Bonnette et al. | Nov 2008 | A1 |
20090018565 | To et al. | Jan 2009 | A1 |
20090018566 | Escudero et al. | Jan 2009 | A1 |
20090018567 | Escudero et al. | Jan 2009 | A1 |
20090024084 | Khosla et al. | Jan 2009 | A1 |
20090024085 | To et al. | Jan 2009 | A1 |
20090024191 | Seibel et al. | Jan 2009 | A1 |
20090028407 | Seibel et al. | Jan 2009 | A1 |
20090028507 | Jones et al. | Jan 2009 | A1 |
20090043191 | Castella et al. | Feb 2009 | A1 |
20090073444 | Wang | Mar 2009 | A1 |
20090093764 | Pfeffer et al. | Apr 2009 | A1 |
20090099641 | Wu et al. | Apr 2009 | A1 |
20090125019 | Douglass et al. | May 2009 | A1 |
20090135280 | Johnston et al. | May 2009 | A1 |
20090137893 | Seibel et al. | May 2009 | A1 |
20090152664 | Tian et al. | Jun 2009 | A1 |
20090185135 | Volk | Jul 2009 | A1 |
20090196554 | Irisawa | Aug 2009 | A1 |
20090198125 | Nakabayashi et al. | Aug 2009 | A1 |
20090208143 | Yoon et al. | Aug 2009 | A1 |
20090216180 | Lee et al. | Aug 2009 | A1 |
20090221904 | Shealy et al. | Sep 2009 | A1 |
20090221920 | Boppart et al. | Sep 2009 | A1 |
20090235396 | Wang et al. | Sep 2009 | A1 |
20090244485 | Walsh et al. | Oct 2009 | A1 |
20090244547 | Ozawa | Oct 2009 | A1 |
20090264826 | Thompson | Oct 2009 | A1 |
20090292199 | Bielewicz et al. | Nov 2009 | A1 |
20090318862 | Ali et al. | Dec 2009 | A1 |
20100021926 | Noordin | Jan 2010 | A1 |
20100049225 | To et al. | Feb 2010 | A1 |
20100125253 | Olson | May 2010 | A1 |
20100217245 | Prescott | Aug 2010 | A1 |
20100253949 | Adler et al. | Oct 2010 | A1 |
20100324472 | Wulfman | Dec 2010 | A1 |
20110118660 | Torrance et al. | May 2011 | A1 |
20110201924 | Tearney et al. | Aug 2011 | A1 |
20130096589 | Spencer et al. | Apr 2013 | A1 |
20130296695 | Spencer et al. | Nov 2013 | A1 |
20140005534 | He et al. | Jan 2014 | A1 |
20150141816 | Gupta et al. | May 2015 | A1 |
20150208922 | Simpson et al. | Jul 2015 | A1 |
20150320975 | Simpson et al. | Nov 2015 | A1 |
20160008025 | Gupta et al. | Jan 2016 | A1 |
20160038030 | Smith et al. | Feb 2016 | A1 |
20160135832 | Simpson et al. | May 2016 | A1 |
20160144155 | Simpson et al. | May 2016 | A1 |
20160262791 | Patel et al. | Sep 2016 | A1 |
20160262839 | Spencer et al. | Sep 2016 | A1 |
20160338582 | Tachibana et al. | Nov 2016 | A1 |
20170065293 | Rosenthal et al. | Mar 2017 | A1 |
20170065295 | Patel et al. | Mar 2017 | A1 |
20170238803 | Kankaria | Aug 2017 | A1 |
20170238808 | Simpson et al. | Aug 2017 | A1 |
20170273711 | Simpson et al. | Sep 2017 | A1 |
20180042520 | Patel et al. | Feb 2018 | A1 |
20180049700 | Black et al. | Feb 2018 | A1 |
20180146978 | Patel et al. | May 2018 | A1 |
20190313941 | Radjabi | Oct 2019 | A1 |
20200060718 | Patel et al. | Feb 2020 | A1 |
20200069253 | Black et al. | Mar 2020 | A1 |
20200069327 | Patel et al. | Mar 2020 | A1 |
Number | Date | Country |
---|---|---|
1875242 | Dec 2006 | CN |
1947652 | Apr 2007 | CN |
202006018883.5 | Feb 2007 | DE |
0347098 | Dec 1989 | EP |
0808638 | Nov 1997 | EP |
0845692 | Nov 2005 | EP |
1859732 | Nov 2007 | EP |
2090245 | Aug 2009 | EP |
2353526 | Sep 2013 | EP |
S62-275425 | Nov 1987 | JP |
03502060 | Feb 1990 | JP |
05103763 | Apr 1993 | JP |
06027343 | Feb 1994 | JP |
07308393 | Nov 1995 | JP |
2002214127 | Jul 2002 | JP |
2004509695 | Apr 2004 | JP |
2004516073 | Jun 2004 | JP |
2005114473 | Apr 2005 | JP |
2005230550 | Sep 2005 | JP |
2005249704 | Sep 2005 | JP |
2005533533 | Nov 2005 | JP |
2008175698 | Jul 2006 | JP |
2006288775 | Oct 2006 | JP |
2006313158 | Nov 2006 | JP |
2006526790 | Nov 2006 | JP |
2006326157 | Dec 2006 | JP |
200783053 | Apr 2007 | JP |
200783057 | Apr 2007 | JP |
2007225349 | Sep 2007 | JP |
2007533361 | Nov 2007 | JP |
2008023627 | Feb 2008 | JP |
2008128708 | Jun 2008 | JP |
2008145376 | Jun 2008 | JP |
2008183208 | Aug 2008 | JP |
2008253492 | Oct 2008 | JP |
200914751 | Jan 2009 | JP |
2009509690 | Mar 2009 | JP |
200978150 | Apr 2009 | JP |
2009066252 | Apr 2009 | JP |
2009201969 | Sep 2009 | JP |
2010518900 | Jun 2010 | JP |
20070047221 | May 2007 | KR |
2185859 | Jul 2002 | RU |
2218191 | Dec 2003 | RU |
WO9117698 | Nov 1991 | WO |
WO9923958 | May 1999 | WO |
WO0054659 | Sep 2000 | WO |
WO0115609 | Mar 2001 | WO |
WO0176680 | Oct 2001 | WO |
WO2006133030 | Dec 2006 | WO |
WO2008005888 | Jan 2008 | WO |
WO2008029506 | Mar 2008 | WO |
WO2008042987 | Apr 2008 | WO |
WO2008051951 | May 2008 | WO |
WO2008065600 | Jun 2008 | WO |
WO2008086613 | Jul 2008 | WO |
WO2008087613 | Jul 2008 | WO |
WO2009005779 | Jan 2009 | WO |
WO2009006335 | Jan 2009 | WO |
WO2009009799 | Jan 2009 | WO |
WO2009009802 | Jan 2009 | WO |
WO2009023635 | Feb 2009 | WO |
WO2009024344 | Feb 2009 | WO |
WO2009094341 | Jul 2009 | WO |
WO2019204797 | Oct 2019 | WO |
Entry |
---|
Aziz et al.; Chronic total occlusions—a stiff challege requiring a major breakthrough: is there light at the end of the tunnel?; Heart; vol. 91; suppl. III; pp. 42-48; Jun. 2005. |
Emkey et al.; Analysis and evaluation of graded-index fiber-lenses; Journal of Lightwave Technology; vol. LT-5; No. 9; pp. 1156-1164; Sep. 1987. |
Linares et al.; Arbitrary single-mode coupling by tapered and nontapered grin fiber lenses; Applied Optics; vol. 29; No. 28; pp. 4003-4007; Oct. 1, 1990. |
Sharma et al.; Optical coherence tomography based on an all-fiber autocorrelator using probe-end reflection as reference; CWJ13; San Francisco, California; CLEO May 16, 2004; 4 pages. |
Suparno et al.; Light scattering with single-mode fiber collimators; Applied Optics; vol. 33; No. 30; pp. 7200-7205; Oct. 20, 1994. |
Smith et al.; U.S. Appl. No. 15/854,579 entitled “Chronic total occlusion crossing devices with imaging,” filed Dec. 26, 2017. |
Patel et al.; U.S. Appl. No. 15/741,928 entitled “Micro-molded anamorphic reflector lens for image guided therapeutic/diagnostic catheters,” filed Jan. 4, 2018. |
Zung et al.; U.S. Appl. No. 15/741,773 entitled “Self-alignment mechanism for imaging catheter and drive assembly,” filed Jan. 4, 2018. |
Simpson et al.; U.S. Appl. No. 16/194,183 entitled “Identification of elastic lamina to guide interventional therapy,” filed Nov. 16, 2018. |
Fernandez et al., U.S. Appl. No. 16/305,136 entitled “Catheter device with detachable distal end,” filed Nov. 28, 2018. |
Patel et al., U.S. Appl. No. 16/310,470 entitled “Atherectomy catheter with shapeable distal tip,” filed Dec. 17, 2019. |
Christensen; U.S. Appl. No. 16/069,545 entitled “OCT imaging catheter with lag correction,” filed Jul. 12, 2018. |
Rosenthal et al.; U.S. Appl. No. 16/105,743 entitled “Atherectomy catheter with laterally-displaceable tip,” filed Aug. 20, 2018. |
Patel et al.; U.S. Appl. No. 16/148,246 entitled “Atherectomy catheter with serrated cutter,” filed Oct. 1, 2018. |
Choma et al.; Sensitivity advantage of swept source and fourier domain optical coherence tomography; Optics Express; 11(18); pp. 2183-2189; Sep. 8, 2003. |
De Boer et al.; Improved signal-to-noise ratio in spectral-domain compared with time-domain optical coherence tomography; Optics Letters; 28(21); pp. 2067-2069; Nov. 2003. |
Leitgeb et al.; Performance of fourier domain vs time domain optical coherence tomography; Optics Express; 11(8); pp. 889-894; Apr. 21, 2003. |
Rollins et al.; Optimal interferometer designs for optical coherence tomography; Optics Letters; 24(21); pp. 1484-1486; Nov. 1999. |
Tachibana et al.; U.S. Appl. No. 16/372,112 entitled “Atherectomy catheter drive assemblies” filed Apr. 1, 2019. |
Newhauser et al.; U.S. Appl. No. 15/954,407 entitled “Occlusion-crossing devices,” filed Apr. 16, 2018. |
Patel et al.; U.S. Appl. No. 16/681,807 entitled “Atherectomy catheters and occlusion crossing devices,” filed Nov. 12, 2019. |
Bayer Material Science: ; Snap-Fit Joints for Plastics; 26 pages; retrieved from the Internet: ( https://web.archive.org/web/20121119232733if_/http://fab.cba.mit.edu:80/classes/S62.12/people/vernelle.noel/Plastic_Snap_fit_design.pdf) on Sep. 26, 2018. |
Schmitt et al.; A new rotational thrombectomy catheter; System design and first clinical esperiences; Cardiovascular and Interventional Radiology; Sprinver-Verlag; 22(6); pp: 504-509; Nov. 1, 1999. |
Sharma et al.; Common-path optical coherence tomography with side-viewing bare fiber probe for endoscopic optical coherence tomography; vol. 78; 113102; 5 pages; Nov. 6, 2007. |
Stamper et al.; Plaque characterization with optical coherence tomography. Journal of the American College of Cardiology. 47(8); pp. 69-79; Apr. 18, 2006. |
Number | Date | Country | |
---|---|---|---|
20180256187 A1 | Sep 2018 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 13752325 | Jan 2013 | US |
Child | 15922058 | US | |
Parent | 13277167 | Oct 2011 | US |
Child | 13752325 | US | |
Parent | 12108433 | Apr 2008 | US |
Child | 13277167 | US |