CA2452828A1 - Balloon anchoring system - Google Patents
Balloon anchoring system Download PDFInfo
- Publication number
- CA2452828A1 CA2452828A1 CA002452828A CA2452828A CA2452828A1 CA 2452828 A1 CA2452828 A1 CA 2452828A1 CA 002452828 A CA002452828 A CA 002452828A CA 2452828 A CA2452828 A CA 2452828A CA 2452828 A1 CA2452828 A1 CA 2452828A1
- Authority
- CA
- Canada
- Prior art keywords
- blade
- balloon
- recited
- grip
- stenosis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1027—Making of balloon catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/104—Balloon catheters used for angioplasty
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320725—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with radially expandable cutting or abrading elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22061—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation for spreading elements apart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Child & Adolescent Psychology (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A system for anchoring an angioplasty catheter (10) to a stenosis in the vasculature of a patient includes an elongated inflatable balloon (14) that can be selectively moved between a deflated configuration and an inflated configuration. Optionally, the system can include a stent (38) mounted on th e balloon (14). The balloon (14) defines an axis (18) and has at least one elongated blade (22'/22''/22'''/22'''') which is axially oriented on the surface (20) of the balloon. Also this blade is conformed with at least one azimuthally oriented grip (28'/28''/28'''/28''''). When the balloon (14) is moved into its inflated configuration, to thereby embed the blade (22'/22''/22'''/22'''') and its grip (28'/28''/28'''/28'''') into the stenos is and expand the stent (38) for emplacement in the vasculature, the axially oriented blade (22'/22''/22'''/22'''') prevents an azimuthal movement of the balloon and the azimuthally oriented grip (28'/28''/28'''/28'''') prevents a n axial movement of the balloon relative to the stenosis.
Description
BALLOON ANCHORING SYSTEM
FIELD OF THE INVENTION
The present invention pertains generally to devices and methods for performing angioplasty or stent emplacement procedures. More particularly, the present invention pertains to angioplasty balloon catheters that incorporate cutting blades on~ the surface of the balloon. The present invention is particularly but not exclusively useful as a device and method which incorporates a cutting blade that will anchor the balloon to the stenosis during an angioplasty procedure or the emplacement of a stent in the vasculature of a patient.
BACKGROUND OF THE INVENTION
Angioplasty and stent emplacement procedures have been successfully used for many years for the treatment of vasculature diseases.
Typically, in an angioplasty procedure, an inflatable balloon is inserted on a catheter into the vasculature and is positioned in a vessel of the vasculature at the site of a stenosis. The balloon is then inflated to dilate the stenosis for improved blood flow through the vessel. Inflatable balloons are also widely used for procedures wherein a stent is to be positioned into the vasculature of a patient.
In recent years a significantly important advancement has been made in angioplasty procedures with the introduction of the so-called "cutting balloon." More specifically, such a "cutting balloonn incorporates blades which are mounted on the surface of the balloon to cut into a stenosis as the balloon is inflated to dilate the stenosis. For example, such a "cutting balloon" is disclosed and claimed in U.S. Patent No. 5,797,935 which issued to Barath for an invention entitled "Balloon Activated Force Concentrators for Incising Stenotic Segments" and which is assigned to the same assignee as the present invention. It happens, however, that despite such significant technical advances, the very nature of a particular stenosis can pose additional concerns for consideration.
As is well known, a stenosis in a vessel of the vasculature can be -one of many different types and can have various configurations. For instance, some are of a rather slippery consistency. Additionally they may have a configuration that makes it particularly difficult to maintain the position of an angioplasty balloon at the site of the stenosis as the balloon is being inflated.
Specifically, it can happen that as the balloon is being inflated, the forces that are generated between the balloon and the stenosis can cause the balloon to be displaced from the site of the stenosis. Obviously, this so-called "watermelon seed" reaction can be disruptive of an angioplasty procedure.
The above-noted problems are also present, and can be particularly troublesome, in procedures wherein a stent is to be emplaced at a site in the vasculature. As mentioned above, such sites may involve a slippery stenosis that can adversely effect efforts to properly position the stent.
In light of the above, it is an object of the present invention to provide a system and method for anchoring the inflatable balloon of a balloon catheter to a stenosis in the vasculature of a patient during an angioplasty or stent emplacement procedure. Another object of the present invention is to provide an improved "cutting balloon" catheter which incorporates specifically configured blades that will prevent both axial (translational) and azimuthal (rotational) movements of the balloon relative to the vessel (stenosis site) during an angioplasty procedure. Still another object of the present invention is to provide a system and method for anchoring the balloon of an angioplasty balloon catheter to a stenosis in the vasculature of a patient that is relatively simple to manufacture, is easy to implement, and is comparatively cost effective.
SUMMARY OF THE PREFERRED EMBODIMENTS
A system and method for anchoring an angioplasty catheter to a stenosis in the vasculature of a patient requires an elongated inflatable
FIELD OF THE INVENTION
The present invention pertains generally to devices and methods for performing angioplasty or stent emplacement procedures. More particularly, the present invention pertains to angioplasty balloon catheters that incorporate cutting blades on~ the surface of the balloon. The present invention is particularly but not exclusively useful as a device and method which incorporates a cutting blade that will anchor the balloon to the stenosis during an angioplasty procedure or the emplacement of a stent in the vasculature of a patient.
BACKGROUND OF THE INVENTION
Angioplasty and stent emplacement procedures have been successfully used for many years for the treatment of vasculature diseases.
Typically, in an angioplasty procedure, an inflatable balloon is inserted on a catheter into the vasculature and is positioned in a vessel of the vasculature at the site of a stenosis. The balloon is then inflated to dilate the stenosis for improved blood flow through the vessel. Inflatable balloons are also widely used for procedures wherein a stent is to be positioned into the vasculature of a patient.
In recent years a significantly important advancement has been made in angioplasty procedures with the introduction of the so-called "cutting balloon." More specifically, such a "cutting balloonn incorporates blades which are mounted on the surface of the balloon to cut into a stenosis as the balloon is inflated to dilate the stenosis. For example, such a "cutting balloon" is disclosed and claimed in U.S. Patent No. 5,797,935 which issued to Barath for an invention entitled "Balloon Activated Force Concentrators for Incising Stenotic Segments" and which is assigned to the same assignee as the present invention. It happens, however, that despite such significant technical advances, the very nature of a particular stenosis can pose additional concerns for consideration.
As is well known, a stenosis in a vessel of the vasculature can be -one of many different types and can have various configurations. For instance, some are of a rather slippery consistency. Additionally they may have a configuration that makes it particularly difficult to maintain the position of an angioplasty balloon at the site of the stenosis as the balloon is being inflated.
Specifically, it can happen that as the balloon is being inflated, the forces that are generated between the balloon and the stenosis can cause the balloon to be displaced from the site of the stenosis. Obviously, this so-called "watermelon seed" reaction can be disruptive of an angioplasty procedure.
The above-noted problems are also present, and can be particularly troublesome, in procedures wherein a stent is to be emplaced at a site in the vasculature. As mentioned above, such sites may involve a slippery stenosis that can adversely effect efforts to properly position the stent.
In light of the above, it is an object of the present invention to provide a system and method for anchoring the inflatable balloon of a balloon catheter to a stenosis in the vasculature of a patient during an angioplasty or stent emplacement procedure. Another object of the present invention is to provide an improved "cutting balloon" catheter which incorporates specifically configured blades that will prevent both axial (translational) and azimuthal (rotational) movements of the balloon relative to the vessel (stenosis site) during an angioplasty procedure. Still another object of the present invention is to provide a system and method for anchoring the balloon of an angioplasty balloon catheter to a stenosis in the vasculature of a patient that is relatively simple to manufacture, is easy to implement, and is comparatively cost effective.
SUMMARY OF THE PREFERRED EMBODIMENTS
A system and method for anchoring an angioplasty catheter to a stenosis in the vasculature of a patient requires an elongated inflatable
2
3 PCT/US02/10724 balloon and specially configured blades mounted on the surface of the balloon. More specifically, the balloon defines a longitudinal axis and is mounted on a catheter for selective movement between a deflated configuration and an inflated configuration. In the deflated configuration the surface of the balloon is effectively collapsed onto the axis. In the inflated configuration, however, the surface of the balloon is radially distanced from the axis.
For the present invention, at least one elongated blade (main-blade) is mounted on the surface of the balloon. Preferably, the main-blade is axially oriented substantially parallel to the axis that is defined by the balloon.
Additionally, there is at least one grip that is conformed with the blade.
More specifically, the grip is azimuthally oriented on the axis that is defined by the balloon, and it protrudes in a substantially radial direction from the axis of the balloon.
For one embodiment of the present invention the grip is a serration(s) that is formed into the cutting edge of the main-blade. In another embodiment the grip is a cross-blade that forms an angle a with the blade. In accordance with the present invention this angle a can be ninety degrees, or it may be greater or less than ninety degrees depending on the particular needs of the user. Further, as contemplated for the present invention, the blade and the grip can be made of stainless steel.
For an alternate embodiment of the present invention the system can include a stent that is to be emplaced in the vasculature of the patient.
Specifically, as is well known, the stent is positioned on the balloon for movement with the balloon as the balloon is inflated from its deflated configuration and into its inflated configuration. Thus, the sterit can be expanded for emplacement in the vasculature of the patient. Further, when a stent is included in the system of the present invention there can be a plurality of anchoring blades mounted on the balloon. In this case, preferably, each blade is axially aligned with at least one other blade, with a distance therebetween. The stent can then be positioned on the balloon between the blades.
In operation, as the balloon is inflated into its inflated configuration, the blade and its conformed grip are embedded into the stenosis. This effectively anchors the balloon to the stenosis as the axially oriented main-blade prevents azimuthal (rotational) movement in the vessel relative to said stenosis. At the same time the .azimuthally oriented grip prevents axial (translational) movement of the balloon in the vessel relative to the stenosis.
It is within the contemplation of the present invention that the system will include a plurality of main-blades. Furthermore, it is contemplated that each of the plurality of main-blades may have a plurality of conformed grips.
Additionally, some of the plurality of main-blades can be axially aligned with each other. Also, each main-blade can be azimuthally distanced from at least one other main-blade by an angle (3. Thus, a series of main-blades can be present in different azimuthal locations on the surface of the balloon.
BRIEF DESCRIPTION OF THE DRAWINGS
The novel features of this invention, as well as the invention itself, both as to its structure and its operation, will be best understood from the accompanying drawings, taken in conjunction with the accompanying description, in which similar reference characters refer to similar parts, and in which:
Fig. 1 is a perspective view of a patient undergoing an angioplasty procedure with a balloon catheter that incorporates the present invention;
Fig. 2 is a perspective view of a preferred embodiment of the present invention;
Fig. 3A is a top plan view of a blade and grip arrangement in accordance with the present invention;
Fig. 3B is a top plan view of an alternative blade and grip arrangement in accordance with the present invention;
Fig. 3C is a top plan view of yet another alternative blade and grip arrangement in accordance with the present invention;
For the present invention, at least one elongated blade (main-blade) is mounted on the surface of the balloon. Preferably, the main-blade is axially oriented substantially parallel to the axis that is defined by the balloon.
Additionally, there is at least one grip that is conformed with the blade.
More specifically, the grip is azimuthally oriented on the axis that is defined by the balloon, and it protrudes in a substantially radial direction from the axis of the balloon.
For one embodiment of the present invention the grip is a serration(s) that is formed into the cutting edge of the main-blade. In another embodiment the grip is a cross-blade that forms an angle a with the blade. In accordance with the present invention this angle a can be ninety degrees, or it may be greater or less than ninety degrees depending on the particular needs of the user. Further, as contemplated for the present invention, the blade and the grip can be made of stainless steel.
For an alternate embodiment of the present invention the system can include a stent that is to be emplaced in the vasculature of the patient.
Specifically, as is well known, the stent is positioned on the balloon for movement with the balloon as the balloon is inflated from its deflated configuration and into its inflated configuration. Thus, the sterit can be expanded for emplacement in the vasculature of the patient. Further, when a stent is included in the system of the present invention there can be a plurality of anchoring blades mounted on the balloon. In this case, preferably, each blade is axially aligned with at least one other blade, with a distance therebetween. The stent can then be positioned on the balloon between the blades.
In operation, as the balloon is inflated into its inflated configuration, the blade and its conformed grip are embedded into the stenosis. This effectively anchors the balloon to the stenosis as the axially oriented main-blade prevents azimuthal (rotational) movement in the vessel relative to said stenosis. At the same time the .azimuthally oriented grip prevents axial (translational) movement of the balloon in the vessel relative to the stenosis.
It is within the contemplation of the present invention that the system will include a plurality of main-blades. Furthermore, it is contemplated that each of the plurality of main-blades may have a plurality of conformed grips.
Additionally, some of the plurality of main-blades can be axially aligned with each other. Also, each main-blade can be azimuthally distanced from at least one other main-blade by an angle (3. Thus, a series of main-blades can be present in different azimuthal locations on the surface of the balloon.
BRIEF DESCRIPTION OF THE DRAWINGS
The novel features of this invention, as well as the invention itself, both as to its structure and its operation, will be best understood from the accompanying drawings, taken in conjunction with the accompanying description, in which similar reference characters refer to similar parts, and in which:
Fig. 1 is a perspective view of a patient undergoing an angioplasty procedure with a balloon catheter that incorporates the present invention;
Fig. 2 is a perspective view of a preferred embodiment of the present invention;
Fig. 3A is a top plan view of a blade and grip arrangement in accordance with the present invention;
Fig. 3B is a top plan view of an alternative blade and grip arrangement in accordance with the present invention;
Fig. 3C is a top plan view of yet another alternative blade and grip arrangement in accordance with the present invention;
4 Fig. 3D is a side elevation view of yet another embodiment of a blade and grip arrangement that is useful for the present invention; and Fig. 4 is a perspective view of an alternate embodiment of the present invention showing the incorporation of a stent. .
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring initially tb Fig. 1, a balloon catheter in accordance with the present invention is shown and designated 10. As shown in Fig. 1, the balloon catheter 10 is positioned in the vasculature of a patient 12 for the purpose of performing an angioplasty procedure. To do this, the balloon catheter 10 includes an inflatable balloon 14 and an inflation pump 16 that is connected in fluid communication with the balloon 14. More specifically, activation of the pump 16 by a user causes the balloon 14 to be selectively moved between a deflated configuration and an inflated configuration.
In more detail, Fig. 2 shows the balloon 14 in its inflated configuration.
In this configuration it can be seen that the balloon 14 of the present invention, like typical angioplasty balloons, is elongated and generally defines an axis 18. that extends the length of the balloon 14. The balloon 14 also has a surface 20 on which a plurality of elongated blade elements 22 can be mounted. In accordance with the present invention, the orientation of the blade elements 22 on the surface 20 of balloon 14, and the characteristics of the individual blade elements 22 can be varied to meet the particular requirements and specifications of the user. The blade elements 22a, 22b and 22c shown in Fig. 2 are only exemplary.
For the ~ purposes of the present invention, it is preferable that each blade element 22, when mounted on the surface 20 of balloon 14, be oriented substantially parallel to the axis 18. Further, as shown in Fig. 2, a plurality of the blade elements 22 can be axially aligned with each other (e.g. blade elements 22a and 22c). Also, the blade elements 22 can be azimuthally distanced from one another (e.g. blade elements 22a and 22b). In particular, the blade elements 22 can be azimuthally distanced from one another by an
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring initially tb Fig. 1, a balloon catheter in accordance with the present invention is shown and designated 10. As shown in Fig. 1, the balloon catheter 10 is positioned in the vasculature of a patient 12 for the purpose of performing an angioplasty procedure. To do this, the balloon catheter 10 includes an inflatable balloon 14 and an inflation pump 16 that is connected in fluid communication with the balloon 14. More specifically, activation of the pump 16 by a user causes the balloon 14 to be selectively moved between a deflated configuration and an inflated configuration.
In more detail, Fig. 2 shows the balloon 14 in its inflated configuration.
In this configuration it can be seen that the balloon 14 of the present invention, like typical angioplasty balloons, is elongated and generally defines an axis 18. that extends the length of the balloon 14. The balloon 14 also has a surface 20 on which a plurality of elongated blade elements 22 can be mounted. In accordance with the present invention, the orientation of the blade elements 22 on the surface 20 of balloon 14, and the characteristics of the individual blade elements 22 can be varied to meet the particular requirements and specifications of the user. The blade elements 22a, 22b and 22c shown in Fig. 2 are only exemplary.
For the ~ purposes of the present invention, it is preferable that each blade element 22, when mounted on the surface 20 of balloon 14, be oriented substantially parallel to the axis 18. Further, as shown in Fig. 2, a plurality of the blade elements 22 can be axially aligned with each other (e.g. blade elements 22a and 22c). Also, the blade elements 22 can be azimuthally distanced from one another (e.g. blade elements 22a and 22b). In particular, the blade elements 22 can be azimuthally distanced from one another by an
5 angle ~3 which will preferably position the blade elements 22 uniformly around the axis 18. For example, the angle ~3 may be ninety degrees, one hundred twenty degrees, or one hundred eighty degrees.
Variations in the characteristics of the blade elements 22 will be best appreciated with reference to Figs. 3A, 3B, 3C,~and Fig. 3D. In all instances, each blade element 22 preferably includes an elongated main-blade 24 which can be axially oriented on the surface 20. Also, each blade element 22 is mounted on a base member 26 which, in turn, can be mounted on the surface 20 of the balloon 14 in a manner well known in the art, such as by bonding.
Thus, all blade elements 22 have several common characteristics. The significant characteristic difference between the various embodiments of the blade elements 22, however, is in the respective grips 28 that are conformed with the main-blade 24.
For one embodiment of the present invention, a blade element 22' has a main-blade 24 that is conformed with a grip 28'. More specifically, as shown in Fig. 3A, the grip 28' includes a cross-blade 30 that is oriented at an angle a relative to the main-blade 24. The angle a may vary and may be either greater than or less than ninety degrees. Specifically, for the grip 28' shown in Fig. 3A, the angle a is greater than ninety degrees. For the grip 28"
of the blade element 22" shown in Fig. 3B, however, the angle a between the main-blade 24 and the cross-blade 30 is substantially equal to ninety degrees.
Also, as shown in both Figs. 3A and 3B, the main-blade 24 of blade elements 22' or 22" can be conformed with a respective grip 28' or 28" at each end of the main-blade 24. Alternatively, a single cross-blade 30 can be positioned substantially midway between the ends of the main-blade 24 as shown in Fig.
3C for the grip 28"' of a blade element 22"'. In yet another variation, the blade element 22"" shown in Fig. 3D has a main-blade 24 which is formed with a grip 28"" that includes at least one serration along the cutting edge of the main-blade 24.
For the embodiments of the blade elements 22', 22", 22"' and 22""
discussed above, all of the respective grips 28 have the common characteristic that they protrude outwardly from the surface 20 of the balloon
Variations in the characteristics of the blade elements 22 will be best appreciated with reference to Figs. 3A, 3B, 3C,~and Fig. 3D. In all instances, each blade element 22 preferably includes an elongated main-blade 24 which can be axially oriented on the surface 20. Also, each blade element 22 is mounted on a base member 26 which, in turn, can be mounted on the surface 20 of the balloon 14 in a manner well known in the art, such as by bonding.
Thus, all blade elements 22 have several common characteristics. The significant characteristic difference between the various embodiments of the blade elements 22, however, is in the respective grips 28 that are conformed with the main-blade 24.
For one embodiment of the present invention, a blade element 22' has a main-blade 24 that is conformed with a grip 28'. More specifically, as shown in Fig. 3A, the grip 28' includes a cross-blade 30 that is oriented at an angle a relative to the main-blade 24. The angle a may vary and may be either greater than or less than ninety degrees. Specifically, for the grip 28' shown in Fig. 3A, the angle a is greater than ninety degrees. For the grip 28"
of the blade element 22" shown in Fig. 3B, however, the angle a between the main-blade 24 and the cross-blade 30 is substantially equal to ninety degrees.
Also, as shown in both Figs. 3A and 3B, the main-blade 24 of blade elements 22' or 22" can be conformed with a respective grip 28' or 28" at each end of the main-blade 24. Alternatively, a single cross-blade 30 can be positioned substantially midway between the ends of the main-blade 24 as shown in Fig.
3C for the grip 28"' of a blade element 22"'. In yet another variation, the blade element 22"" shown in Fig. 3D has a main-blade 24 which is formed with a grip 28"" that includes at least one serration along the cutting edge of the main-blade 24.
For the embodiments of the blade elements 22', 22", 22"' and 22""
discussed above, all of the respective grips 28 have the common characteristic that they protrude outwardly from the surface 20 of the balloon
6 14 in a generally radial direction from the axis 18. Furthermore, as they radially protrude from the axis 18, all of the grips 28 present an azimuthally oriented exterior. Preferably, the grips 28 and main-blades 24 are all made of stainless steel.
In the operation of the balloon catheter 10 of the present invention, the balloon 14 is initially deflated so that its surface 20 is collapsed onto the axis 18. The balloon catheter 10, in its deflated configuration, is then inserted into the vasculature of the patient 12 to position the balloon 14 at the site of a stenosis (not shown). The balloon 14 is then inflated using the inflation pump , 16. This causes the surface 20 of the balloon 14 to be radially distanced from the axis 18 to thereby dilate the stenosis and embed the blade elements) 22 into the stenosis. After the stenosis has been dilated, the balloon 14 is deflated and the balloon catheter 10 is removed from the vasculature of the patient 12.
Important aspects of the present invention are that while the blade elements) 22 are embeded into the stenosis during an angioplasty procedure, the balloon 14 is effectively held at the site of the stenosis.
Specifically, the balloon 14 is prevented from moving either azimuthally in rotation (in the directions of arrows 34, shown in Fig. 2), or axially in translation (in the directions of arrows 36 (also shown in Fig. 2). More specifically, when the balloon 14 is inflated at the site of the stenosis, azimuthal (rotational) constraints are imposed on the balloon 14 by the axially oriented main-blades 24 of the blade element 22. At the same time, axial (translational) constraints are imposed on the balloon 14 by azimuthally oriented components of the grips) 28. Thus, the grips) 28, having cross-blades 30 (Figs. 3A, 3B and 3G) or serrations in cutting edge 32 (Fig. 3D), in combination with the main-blades 24, hold the balloon 14 at the site of a stenosis during an angioplasty procedure. Importantly, this effectively prevents the so-called "watermelon seed" effect noted above.
. For an alternate embodiment of the present invention, as shown in Fig.
4, a stent 38, of any type well known in the pertinent art, can be mounted on the balloon 14. For purposes of the present irivention, the stent 38 needs to
In the operation of the balloon catheter 10 of the present invention, the balloon 14 is initially deflated so that its surface 20 is collapsed onto the axis 18. The balloon catheter 10, in its deflated configuration, is then inserted into the vasculature of the patient 12 to position the balloon 14 at the site of a stenosis (not shown). The balloon 14 is then inflated using the inflation pump , 16. This causes the surface 20 of the balloon 14 to be radially distanced from the axis 18 to thereby dilate the stenosis and embed the blade elements) 22 into the stenosis. After the stenosis has been dilated, the balloon 14 is deflated and the balloon catheter 10 is removed from the vasculature of the patient 12.
Important aspects of the present invention are that while the blade elements) 22 are embeded into the stenosis during an angioplasty procedure, the balloon 14 is effectively held at the site of the stenosis.
Specifically, the balloon 14 is prevented from moving either azimuthally in rotation (in the directions of arrows 34, shown in Fig. 2), or axially in translation (in the directions of arrows 36 (also shown in Fig. 2). More specifically, when the balloon 14 is inflated at the site of the stenosis, azimuthal (rotational) constraints are imposed on the balloon 14 by the axially oriented main-blades 24 of the blade element 22. At the same time, axial (translational) constraints are imposed on the balloon 14 by azimuthally oriented components of the grips) 28. Thus, the grips) 28, having cross-blades 30 (Figs. 3A, 3B and 3G) or serrations in cutting edge 32 (Fig. 3D), in combination with the main-blades 24, hold the balloon 14 at the site of a stenosis during an angioplasty procedure. Importantly, this effectively prevents the so-called "watermelon seed" effect noted above.
. For an alternate embodiment of the present invention, as shown in Fig.
4, a stent 38, of any type well known in the pertinent art, can be mounted on the balloon 14. For purposes of the present irivention, the stent 38 needs to
7 be expandable as the balloon 14 is inflated, and the stent 38 should be positioned on the balloon 14 so that the blade elements 22' can function as disclosed above. Although Fig. 4 shows the use of a plurality of blade elements 22', it is to be appreciated that as few as one blade element 22' can be used. When ,a plurality of blade elements 22' are used, however, it is preferable that each blade element 22' be axially aligned with another blade element 22', and that the aligned blade elements 22~ be separated from each other by a distance 40. Specifically, as shown in Fig. 4, the distance 40 is established to provide for the positioning of the stent 38 on the balloon.
Whi-le the particular Balloon Anchoring System as herein shown and disclosed in detail is fully capable of obtaining the objects and providing the advantages herein before stated, it is to be understood that it is merely illustrative of the presently preferred embodiments of the invention and that no limitations are intended to the details of construction or design herein shown other than as described in the appended claims.
Whi-le the particular Balloon Anchoring System as herein shown and disclosed in detail is fully capable of obtaining the objects and providing the advantages herein before stated, it is to be understood that it is merely illustrative of the presently preferred embodiments of the invention and that no limitations are intended to the details of construction or design herein shown other than as described in the appended claims.
8
Claims (25)
1. A system for anchoring an angioplasty catheter to a stenosis in the vasculature of a patient which comprises:
an elongated inflatable balloon having a surface and defining a longitudinal axis, said balloon being mounted on said catheter for selective movement between a deflated configuration wherein said surface of said balloon is collapsed on said axis, and an inflated configuration wherein said surface is radially distanced from said axis;
at least one elongated blade mounted on said surface of said balloon substantially parallel to said axis of said balloon;
at least one grip conformed with said blade, said grip being oriented to protrude in a substantially radial direction from said axis;
and a means for inflating said balloon into said inflated configuration to embed said blade and said grip into said stenosis to anchor said balloon thereto by respectively preventing azimuthal and axial movements of said balloon relative to said stenosis.
an elongated inflatable balloon having a surface and defining a longitudinal axis, said balloon being mounted on said catheter for selective movement between a deflated configuration wherein said surface of said balloon is collapsed on said axis, and an inflated configuration wherein said surface is radially distanced from said axis;
at least one elongated blade mounted on said surface of said balloon substantially parallel to said axis of said balloon;
at least one grip conformed with said blade, said grip being oriented to protrude in a substantially radial direction from said axis;
and a means for inflating said balloon into said inflated configuration to embed said blade and said grip into said stenosis to anchor said balloon thereto by respectively preventing azimuthal and axial movements of said balloon relative to said stenosis.
2. A system as recited in claim 1 further comprising a stent positioned on said balloon for movement therewith from said deflated configuration into said inflated configuration to expand said stent for emplacement in the vasculature of the patient.
3. A system as recited in claim 2 further comprising a plurality of said blades, with each said blade axially aligned with at least one other said blade, and with a distance therebetween for positioning said stent therebetween on said balloon.
4. A system as recited in claim 1 wherein said grip is a serration formed on said blade.
5. A system as recited in claim 1 wherein said grip is a cross-blade and wherein said cross-blade forms an angle a with said blade.
6. A system as recited in claim 5 wherein said angle a is ninety degrees.
7. A system as recited in claim 5 wherein said angle .alpha. is greater than ninety degrees.
8. A system as recited in claim 1 wherein said blade and said grip are made of stainless steel.
9. A system as recited in claim 1 wherein there are a plurality of said blades, and further wherein each said blade has a plurality of conformed grips.
10. A system as recited in claim 1 wherein a plurality of said blades are axially aligned with each other.
11. A system as recited in claim 1 wherein there are a plurality of said blades, and further wherein each said blade is azimuthally distanced from at least one other said blade by an angle .beta..
12. A blade for anchoring an angioplasty balloon to a stenosis in the vasculature of a patient during an emplacement of a stent, wherein the balloon is elongated to define an axis and said blade comprises:
a base member;
an elongated main-blade mounted on said base member;
a grip conformed with said main-blade; and a means for attaching said base member to a surface of the balloon to axially orient said main-blade substantially parallel to the axis of the balloon to prevent azimuthal movement of the balloon when said blade is embedded into the stenosis, and to azimuthally orient said grip to protrude radially from the axis to prevent axial movement of the balloon when said blade is embedded into the stenosis.
a base member;
an elongated main-blade mounted on said base member;
a grip conformed with said main-blade; and a means for attaching said base member to a surface of the balloon to axially orient said main-blade substantially parallel to the axis of the balloon to prevent azimuthal movement of the balloon when said blade is embedded into the stenosis, and to azimuthally orient said grip to protrude radially from the axis to prevent axial movement of the balloon when said blade is embedded into the stenosis.
13. A blade as recited in claim 12 further comprising a means for inflating the balloon for selective movement between a deflated configuration wherein the surface of the balloon is collapsed onto the axis, and an inflated configuration wherein the surface is radially distanced from the axis to embed said blade into the stenosis.
14. A blade as recited in claim 13 wherein said stent is positioned on said balloon for movement therewith from said deflated configuration into said inflated configuration to expand said stent for emplacement in the vasculature of the patient.
15. A blade as recited in claim 14 further comprising a plurality of said blades, with each said blade axially aligned with at least one other said blade, and with a distance therebetween for positioning said stent therebetween on said balloon.
16. A blade as recited in claim 12 wherein said grip is a serration formed on said main-blade.
17. A blade as recited in claim 16 wherein said grip is a cross-blade and wherein said cross-blade forms an angle a with said main-blade.
18. A blade as recited in claim 17 wherein said angle a is ninety degrees.
19. A blade as recited in claim 12 wherein there are a plurality of said main-blades, and further wherein each said main-blade has a plurality of conformed grips.
20. A blade as recited in claim 19 wherein a plurality of said main-blades are axially aligned with each other.
21. A blade as recited in claim 12 wherein there are a plurality of said main-blades, and further wherein each said main-blade is azimuthally distanced from at least one other said main-blade by an angle .beta.3.
22. A method for anchoring an angioplasty catheter to a stenosis in the vasculature of a patient which comprises the steps of:
providing an elongated inflatable balloon having a surface and defining a longitudinal axis, said balloon being mounted on said catheter for selective movement between a deflated configuration wherein said surface of said balloon is collapsed on said axis, and an inflated configuration wherein said surface is radially distanced from said axis, with at least one elongated blade mounted on said surface of said balloon substantially parallel to said axis of said balloon, and at least one grip conformed with said blade, said grip being oriented to protrude in a substantially radial direction from said axis;
inserting said balloon to the site of the stenosis in the vasculature; and inflating said balloon into said inflated configuration to embed said blade and said grip into said stenosis to anchor said balloon thereto by respectively preventing azimuthal and axial movements of said balloon relative to said stenosis.
providing an elongated inflatable balloon having a surface and defining a longitudinal axis, said balloon being mounted on said catheter for selective movement between a deflated configuration wherein said surface of said balloon is collapsed on said axis, and an inflated configuration wherein said surface is radially distanced from said axis, with at least one elongated blade mounted on said surface of said balloon substantially parallel to said axis of said balloon, and at least one grip conformed with said blade, said grip being oriented to protrude in a substantially radial direction from said axis;
inserting said balloon to the site of the stenosis in the vasculature; and inflating said balloon into said inflated configuration to embed said blade and said grip into said stenosis to anchor said balloon thereto by respectively preventing azimuthal and axial movements of said balloon relative to said stenosis.
23. A method as recited in claim 22 further comprising the step of mounting a stent on said balloon for movement therewith from said deflated configuration to said inflated configuration for emplacement of said stent into the vasculature of the patient.
24. A method as recited in claim 22 wherein said grip is a serration formed on said blade.
25. A method as recited in claim 22 wherein said grip is a cross-blade and wherein said cross-blade forms an angle .alpha. with said blade.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/927,135 US6562062B2 (en) | 2001-08-10 | 2001-08-10 | Balloon anchoring system |
US09/927,135 | 2001-08-10 | ||
PCT/US2002/010724 WO2003013393A1 (en) | 2001-08-10 | 2002-04-04 | Balloon anchoring system |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2452828A1 true CA2452828A1 (en) | 2003-02-20 |
Family
ID=25454242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002452828A Abandoned CA2452828A1 (en) | 2001-08-10 | 2002-04-04 | Balloon anchoring system |
Country Status (8)
Country | Link |
---|---|
US (1) | US6562062B2 (en) |
EP (1) | EP1414373B1 (en) |
JP (1) | JP2004537369A (en) |
AT (1) | ATE394079T1 (en) |
CA (1) | CA2452828A1 (en) |
DE (1) | DE60226448D1 (en) |
ES (1) | ES2307748T3 (en) |
WO (1) | WO2003013393A1 (en) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8061006B2 (en) * | 2001-07-26 | 2011-11-22 | Powderject Research Limited | Particle cassette, method and kit therefor |
US6632231B2 (en) * | 2001-08-23 | 2003-10-14 | Scimed Life Systems, Inc. | Segmented balloon catheter blade |
US20040111108A1 (en) | 2001-11-09 | 2004-06-10 | Farnan Robert C. | Balloon catheter with non-deployable stent |
AU2002348180A1 (en) | 2001-11-09 | 2003-05-26 | Novoste Corporation | Baloon catheter with non-deployable stent |
US20030144683A1 (en) * | 2001-12-13 | 2003-07-31 | Avantec Vascular Corporation | Inflatable members having concentrated force regions |
US8080026B2 (en) | 2003-01-21 | 2011-12-20 | Angioscore, Inc. | Apparatus and methods for treating hardened vascular lesions |
US7686824B2 (en) * | 2003-01-21 | 2010-03-30 | Angioscore, Inc. | Apparatus and methods for treating hardened vascular lesions |
US20050021070A1 (en) * | 2003-01-21 | 2005-01-27 | Angioscore, Inc. | Methods and apparatus for manipulating vascular prostheses |
US7279002B2 (en) * | 2003-04-25 | 2007-10-09 | Boston Scientific Scimed, Inc. | Cutting stent and balloon |
US7632288B2 (en) | 2003-05-12 | 2009-12-15 | Boston Scientific Scimed, Inc. | Cutting balloon catheter with improved pushability |
US7758604B2 (en) * | 2003-05-29 | 2010-07-20 | Boston Scientific Scimed, Inc. | Cutting balloon catheter with improved balloon configuration |
US7008438B2 (en) * | 2003-07-14 | 2006-03-07 | Scimed Life Systems, Inc. | Anchored PTCA balloon |
US6921269B2 (en) * | 2003-07-30 | 2005-07-26 | Honeywell International Inc. | Relative rotation signal transfer assembly |
US7273471B1 (en) | 2003-12-23 | 2007-09-25 | Advanced Cardiovascular Systems, Inc. | Catheter balloon having a porous layer with ridges |
US7270673B2 (en) * | 2003-12-31 | 2007-09-18 | Boston Scientific Scimed, Inc. | Microsurgical balloon with protective reinforcement |
US7316709B2 (en) * | 2004-01-13 | 2008-01-08 | Advanced Cardiovascular Systems, Inc. | Balloon catheter having a textured member for enhancing balloon or stent retention |
US20050177130A1 (en) * | 2004-02-10 | 2005-08-11 | Angioscore, Inc. | Balloon catheter with spiral folds |
US7754047B2 (en) * | 2004-04-08 | 2010-07-13 | Boston Scientific Scimed, Inc. | Cutting balloon catheter and method for blade mounting |
US7566319B2 (en) | 2004-04-21 | 2009-07-28 | Boston Scientific Scimed, Inc. | Traction balloon |
US20050240148A1 (en) * | 2004-04-21 | 2005-10-27 | Scimed Life Systems, Inc. | Traction cutting balloon |
US7976557B2 (en) * | 2004-06-23 | 2011-07-12 | Boston Scientific Scimed, Inc. | Cutting balloon and process |
US20060079838A1 (en) * | 2004-10-08 | 2006-04-13 | Walker Steven C | Movable Balloon anchor for medical devices |
US20060079845A1 (en) * | 2004-10-08 | 2006-04-13 | Eben Howard And Pamela A. Howard | Movable inflatable anchor for medical devices |
US7291158B2 (en) * | 2004-11-12 | 2007-11-06 | Boston Scientific Scimed, Inc. | Cutting balloon catheter having a segmented blade |
US8038691B2 (en) * | 2004-11-12 | 2011-10-18 | Boston Scientific Scimed, Inc. | Cutting balloon catheter having flexible atherotomes |
US8066726B2 (en) * | 2004-11-23 | 2011-11-29 | Boston Scientific Scimed, Inc. | Serpentine cutting blade for cutting balloon |
US20060184191A1 (en) * | 2005-02-11 | 2006-08-17 | Boston Scientific Scimed, Inc. | Cutting balloon catheter having increased flexibility regions |
US20060247674A1 (en) * | 2005-04-29 | 2006-11-02 | Roman Ricardo D | String cutting balloon |
US10076641B2 (en) * | 2005-05-11 | 2018-09-18 | The Spectranetics Corporation | Methods and systems for delivering substances into luminal walls |
US20070198047A1 (en) * | 2005-12-20 | 2007-08-23 | Medical Components, Inc. | Cutting balloon catheter assembly |
US20080077164A1 (en) * | 2006-02-24 | 2008-03-27 | National University Of Ireland, Galway | Minimally Invasive Intravascular Treatment Device |
US20090105687A1 (en) * | 2007-10-05 | 2009-04-23 | Angioscore, Inc. | Scoring catheter with drug delivery membrane |
US11219750B2 (en) | 2008-03-21 | 2022-01-11 | Cagent Vascular, Inc. | System and method for plaque serration |
EP2254641B1 (en) | 2008-03-21 | 2016-09-21 | Cagent Vascular, LLC | Device for pre-angioplasty serration and dilatation |
US9480826B2 (en) | 2008-03-21 | 2016-11-01 | Cagent Vascular, Llc | Intravascular device |
US20100286593A1 (en) * | 2009-05-11 | 2010-11-11 | Hotspur Technologies, Inc. | Balloon catheter with cutting features and methods for use |
US20110112623A1 (en) * | 2009-11-10 | 2011-05-12 | Schatz Richard A | System and Method for Placing a Coronary Stent at the Ostium of a Blood Vessel |
EP2380604A1 (en) | 2010-04-19 | 2011-10-26 | InnoRa Gmbh | Improved coating formulations for scoring or cutting balloon catheters |
EP2566562A1 (en) | 2010-05-07 | 2013-03-13 | Cook Medical Technologies LLC | Balloon with integral segmented dilation elements |
US8632559B2 (en) | 2010-09-21 | 2014-01-21 | Angioscore, Inc. | Method and system for treating valve stenosis |
US8491615B2 (en) | 2010-12-29 | 2013-07-23 | Boston Scientific Scimed, Inc. | Cutting balloon catheter |
GB2487400B (en) * | 2011-01-20 | 2013-07-10 | Cook Medical Technologies Llc | Scoring balloon with offset scoring elements |
EP3398542B1 (en) | 2011-07-15 | 2020-12-02 | Boston Scientific Scimed, Inc. | Cutting balloon catheter with flexible cutting blades |
US10117668B2 (en) | 2013-10-08 | 2018-11-06 | The Spectranetics Corporation | Balloon catheter with non-deployable stent having improved stability |
WO2015114463A2 (en) | 2014-02-02 | 2015-08-06 | Gil Hefer | Apparatus and methods for recannalization, valve repair and replacement |
US10463842B2 (en) | 2014-06-04 | 2019-11-05 | Cagent Vascular, Llc | Cage for medical balloon |
US10471238B2 (en) | 2014-11-03 | 2019-11-12 | Cagent Vascular, Llc | Serration balloon |
CA2969579A1 (en) | 2014-12-03 | 2016-06-09 | PAVmed Inc. | Systems and methods for percutaneous division of fibrous structures |
WO2017049227A2 (en) | 2015-09-17 | 2017-03-23 | Cagent Vascular, Llc | Wedge dissectors for a medical ballon |
CN110114108B (en) | 2016-11-16 | 2022-12-06 | 开金血管公司 | System and method for depositing a drug into tissue through teeth |
US11051845B2 (en) * | 2017-01-14 | 2021-07-06 | Choon Kee Lee | Non-surgical chest tube introducer |
EP4295892A3 (en) | 2018-04-09 | 2024-03-06 | Boston Scientific Scimed, Inc. | Cutting balloon catheter |
CA3105746A1 (en) | 2018-07-25 | 2020-01-30 | Cagent Vascular, Llc | Medical balloon catheters with enhanced pushability |
WO2021108378A1 (en) | 2019-11-27 | 2021-06-03 | Boston Scientific Scimed, Inc. | Cutting balloon catheter |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4307722A (en) | 1979-08-14 | 1981-12-29 | Evans Joseph M | Dilators for arterial dilation |
US4273128A (en) | 1980-01-14 | 1981-06-16 | Lary Banning G | Coronary cutting and dilating instrument |
US4921483A (en) | 1985-12-19 | 1990-05-01 | Leocor, Inc. | Angioplasty catheter |
US4793348A (en) | 1986-11-15 | 1988-12-27 | Palmaz Julio C | Balloon expandable vena cava filter to prevent migration of lower extremity venous clots into the pulmonary circulation |
US4921484A (en) | 1988-07-25 | 1990-05-01 | Cordis Corporation | Mesh balloon catheter device |
US5009659A (en) | 1989-10-30 | 1991-04-23 | Schneider (Usa) Inc. | Fiber tip atherectomy catheter |
US5196024A (en) | 1990-07-03 | 1993-03-23 | Cedars-Sinai Medical Center | Balloon catheter with cutting edge |
US5320634A (en) * | 1990-07-03 | 1994-06-14 | Interventional Technologies, Inc. | Balloon catheter with seated cutting edges |
US5395331A (en) * | 1992-04-27 | 1995-03-07 | Minnesota Mining And Manufacturing Company | Retrograde coronary sinus catheter having a ribbed balloon |
US5176693A (en) | 1992-05-11 | 1993-01-05 | Interventional Technologies, Inc. | Balloon expandable atherectomy cutter |
CA2118886C (en) * | 1993-05-07 | 1998-12-08 | Dennis Vigil | Method and apparatus for dilatation of a stenotic vessel |
US5797935A (en) * | 1996-09-26 | 1998-08-25 | Interventional Technologies Inc. | Balloon activated forced concentrators for incising stenotic segments |
AU9604498A (en) * | 1997-10-10 | 1999-05-03 | Hearten Medical, Inc. | A balloon catheter for abrading a patent foramen ovale and method of using the balloon catheter |
WO2002007795A2 (en) * | 2000-07-24 | 2002-01-31 | Jeffrey Grayzel | Stiffened balloon catheter for dilatation and stenting |
-
2001
- 2001-08-10 US US09/927,135 patent/US6562062B2/en not_active Expired - Lifetime
-
2002
- 2002-04-04 AT AT02726706T patent/ATE394079T1/en not_active IP Right Cessation
- 2002-04-04 WO PCT/US2002/010724 patent/WO2003013393A1/en active Application Filing
- 2002-04-04 DE DE60226448T patent/DE60226448D1/en not_active Expired - Lifetime
- 2002-04-04 JP JP2003518409A patent/JP2004537369A/en active Pending
- 2002-04-04 CA CA002452828A patent/CA2452828A1/en not_active Abandoned
- 2002-04-04 ES ES02726706T patent/ES2307748T3/en not_active Expired - Lifetime
- 2002-04-04 EP EP02726706A patent/EP1414373B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2003013393A1 (en) | 2003-02-20 |
EP1414373A4 (en) | 2005-09-21 |
ES2307748T3 (en) | 2008-12-01 |
ATE394079T1 (en) | 2008-05-15 |
DE60226448D1 (en) | 2008-06-19 |
US6562062B2 (en) | 2003-05-13 |
EP1414373B1 (en) | 2008-05-07 |
EP1414373A1 (en) | 2004-05-06 |
US20030032973A1 (en) | 2003-02-13 |
JP2004537369A (en) | 2004-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6562062B2 (en) | Balloon anchoring system | |
JP5123160B2 (en) | Balloon catheter and method for providing a channel in a lesion | |
US7029483B2 (en) | Device for percutaneous cutting and dilating a stenosis of the aortic valve | |
US5713913A (en) | Device and method for transecting a coronary artery | |
US7008438B2 (en) | Anchored PTCA balloon | |
AU714544B2 (en) | Balloon activated force concentrators for incising stenotic segments | |
AU645473B2 (en) | Method for manufacturing a folding balloon catheter | |
EP1740105B1 (en) | Apparatus for treating hardened vascular lesions | |
US6520984B1 (en) | Stent graft assembly and method | |
AU741554B2 (en) | Neovascularization catheter | |
EP1587447B1 (en) | Retrieval device | |
US6620191B1 (en) | System for releasably securing a stent on a catheter assembly and method of use | |
EP1258230A2 (en) | Balloon catheter device | |
ES2387743T3 (en) | Balloon catheter | |
JP2017035503A (en) | Anchoring device for anchoring boring tool in lumen or vessel | |
US20030144578A1 (en) | Anastomosis anchoring device and method | |
EP3423009B1 (en) | An inflatable insertion device for percutaneous insertion | |
US20210346034A1 (en) | Device for closing a vein juncture in the treatment of varicose veins |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued |