WO1997018067A1 - Methods and apparatus for making a drug infusion device - Google Patents
Methods and apparatus for making a drug infusion device Download PDFInfo
- Publication number
- WO1997018067A1 WO1997018067A1 PCT/US1995/014998 US9514998W WO9718067A1 WO 1997018067 A1 WO1997018067 A1 WO 1997018067A1 US 9514998 W US9514998 W US 9514998W WO 9718067 A1 WO9718067 A1 WO 9718067A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catheter
- perforation
- balloon
- drug
- catheter device
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/24—Perforating by needles or pins
-
- 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
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0015—Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
- B26F1/36—Punching or perforating pliers
-
- 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
- A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
Definitions
- the present invention relates generally to intraluminal and endoluminal drug infusion devices, and in particular, to low cost methods and apparatus for modifying and re-using catheters, including balloon catheters, for use in infusing drugs or other therapeutic agents.
- the catheter device used to perform the angioplasty or stent delivery is typically a single use, disposable product. If a drug infusion step is performed, it typically requires that another catheter device, such as the DispatchTM Coronary Infusion Catheter, sold by SciMed Life Systems, Maple Grove, Minnesota, be inserted in the body vessel.
- a drawback of drug delivery devices such as the Dispatch TM catheter is the special-purpose nature of such devices.
- the drug delivery device may contain many parts in common with the catheter device used in the original angioplasty or stent delivery procedure, the drug delivery device may typically only be used after another instrument first has been used to treat the body vessel.
- special purpose drug delivery devices require manufacturing, purchasing and handling costs beyond those required to perform the treatment procedure.
- a hospital or clinic must carry a complete inventory of such drug delivery devices, with an entire range of balloon diameters and drug delivery pore sizes, as may be required for occasional use.
- the apparatus of the present invention includes means for defining a cavity for receiving a catheter, and perforation means extending within the cavity for generating a plurality of perforations in the catheter either mechanically or electrically.
- the apparatus may be easily operated in a sterile catheterization environment, for example, on a angioplasty equipment table, without requiring any particular skill.
- a drug or therapeutic agent either a liquid, gas or solid suspension of drug eluting solids
- a plurality of pins are provided on a least one member of a pair of opposing members defining a cavity to receive a catheter.
- apparatus having a cavity for receiving a catheter and holding the catheter in a predetermined relation to cam-actuated perforation means. Means are also provided for adapting the apparatus of the present invention for converting a wide range of sizes of previously known catheter devices to drug delivery devices, on an as-needed basis.
- the apparatus of the present invention may be constructed of rugged materials permitting repeated re- sterilization and re-use.
- the apparatus of the present invention may be constructed of low cost materials to provide a sterile, single-use, disposable product.
- FIG. 1 is a perspective view of a first member of a first family of embodiments of apparatus constructed in accordance with the present invention and also shows the effect obtained by its application to an inflatable balloon catheter.
- FIG. 2 is a cross-sectional view of the jaws of the embodiment of FIG. 1 shown in a closed position.
- FIG. 3 is a cross-sectional view of a second member of the first family of embodiments of apparatus constructed in accordance with the principles of the present invention.
- FIG. 4 is a cross-sectional view of a third member of the first family of embodiments of apparatus constructed in accordance with the principles of the present invention.
- FIG. 5 is a side elevation view of a fourth member of the first family of embodiment of apparatus constructed in accordance with the principles of the present invention.
- FIGS. 6A and 6B are, respectively, exploded perspective and longitudinal cross-sectional views of a first member of a second family of embodiments of the present invention.
- FIGS. 7A and 7B are, respectively, longitudinal and diametral cross-sectional views of a second member of the second family of embodiments of the present invention
- FIGS. 8A and 8B are, respectively, a diametral cross-sectional view of, and a centering member for use with, a third member of the second family of embodiments of the present invention.
- FIG. 9 is a diametral cross-sectional view of a fourth member of the second family of embodiments of the present invention.
- FIG. 10 is a perspective view, in isolation, of the centering members of the embodiment of FIG. 9 holding a distal end of a balloon catheter.
- the first family of embodiments is characterized by the inclusion of opposing members having a plurality of mechanical or electrical perforation means, which opposing members may be closed together about a catheter or balloon catheter to create a drug infusion device.
- apparatus 10 comprises a pliers-type device having jaws 11 carrying a plurality of perforation pins 12. Perforation pins 12 are affixed within jaws 11 in a substantially parallel arrangement. Jaws 11 include grip members 13 joined at axis 14, and closure return spring 15 (only partially visible in FIG. 1) disposed about axis 14 that biases jaws 11 in a closed position.
- jaws 11 of apparatus 10 When jaws 11 of apparatus 10 close together, they form a longitudinal passage 16 having an inner contour 17 that approximates the profile of a catheter or the balloon of a balloon catheter.
- inner contour 17 of apparatus 10 illustratively approximates the inflated diameter of inflatable angioplasty catheter balloon 100.
- perforation pins 12 mechanically create a plurality of apertures 101 in the balloon.
- jaws In one embodiment of the apparatus 10, jaws
- Perforation pins 12 may be integrally formed of a rigid plastic with jaws 11. Alternatively, perforation pins
- ⁇ 12 may be formed from a suitable metal alloy, e.g., stainless steel, and placed in the mold for jaws 11 before molding, so that bases 18 of perforation pins 12 are embedded in jaws 11.
- metal perforation pins may be implanted in jaws 11 after prior punching of suitable holes, the perforation pins being fixed by gluing or by force-fitting in the holes. Any of these modes of construction are expected to provide apparatus which are relatively economical for mass production.
- Perforation pins may also create apertures in the catheter device to be perforated other than by mechanical means.
- perforation pins may be electrically heated, so that they melt through, rather than mechanically puncture, the catheter device.
- perforation pins may be connected to an RF power source to serve as electrodes for creating porosity in the catheter or balloon.
- apparatus 10 operation of apparatus 10 to convert a standard catheter device or balloon catheter to a drug infusion device is straightforward.
- An illustrative use of apparatus 10 is described with respect to FIGS. 1 and 2 to effect perforation of a plurality of holes 101 in the wall of the balloon angioplasty catheter 100.
- Balloon catheter 100 is first removed from its packaging, or if previously used in an angioplasty procedure, rinsed with sterile saline solution. While grip members 13 of apparatus 10 are squeezed together to open jaws 11, balloon 100 is seated in longitudinal passage 16. The pressure on grip members 13 is then relaxed, permitting jaws 11 to close together by recoil of closure return spring 15. Jaws 11 are then firmly held closed together while balloon 100 is inflated. As balloon 100 expands, its outer wall contacts perforation pins 12, thereby creating a plurality of apertures in the outer wall of balloon 100. Balloon catheter 100 is then deflated, grip members 13 are squeezed together to open jaws 11, and balloon catheter 100 is removed from longitudinal passage 16. Balloon catheter 100 may then be inserted transluminally into a patient, and using a suitable syringe or pressure bag, a drug or a therapeutic agent is injected into balloon catheter 100.
- the drug or therapeutic agent must be injected into balloon catheter 100 in a manner sufficient to expand the balloon into contact with the vessel wall, i.e., at least initially, the flow of drug or therapeutic agent exiting the balloon is lower than the rate at which it is being injected into the balloon by the syringe or pressure bag.
- the balloon may be only partially inflated, or not at all.
- the number, length, thickness, orientation and positioning of perforation pins in apparatus 10, as well as all other embodiments of the present invention described herein, depend upon the specific requirements of a particular application for a drug infusion device made using apparatus 10. These characteristics may vary, in particular, according to the number of apertures desired per unit of length of the balloon or catheter, and the distribution of the apertures around the contour of the balloon or catheter.
- the cross section of the passage between jaws 11 of apparatus 10 may be of any desired shape, as long as its contour approximately envelops the cross section of the catheter or balloon to be inflated, depending on the length and orientation of the perforation pins.
- perforation pins 12 may create apertures in a catheter having any number of shapes, for example, slits, holes, etc., and such characteristics as are depicted herein are not to be considered limiting.
- Apparatus 20 features great ease of fabrication, for example, and may be molded as a single piece of plastic.
- Apparatus 20 comprises two semi-cylindrical shells 21, joined by a longitudinal articulation formed of a thin junction band 22.
- Junction band 22 is produced during the plastic molding process and is commonly referred to as a "living-hinge.”
- Lower walls 23 of shells 21 comprise the jaws of the device and provide contour 24 that envelops the catheter or balloon catheter in a closed position.
- Plurality of substantially parallel perforation pins 25 extends inwardly from lower walls 23, and may be integrally formed therewith.
- apparatus 20 Operation of apparatus 20 will be apparent from inspection of FIG. 3 and the foregoing description relating to apparatus 10.
- An advantageous cost feature of this embodiment is that a wide variety of different configurations of apparatus 20 may be stocked by a hospital or clinic at a much lower cost than that associated with stocking an inventory of differently shaped drug infusion devices. Consequently, a suitable apparatus 30 may be selected for a single, disposable use to create a drug infusion device for a particular application from either a new or previously used standard or balloon catheter, and on an as-needed basis.
- the orientation of the perforation pins 25 inside the jaws may be other than substantially parallel, as a matter of design choice.
- shells 21 need not be connected by an integral joint, although such construction may be advantageous from a fabrication standpoint.
- the jaws may be independent of each other and comprise two half-cylinders 31 and 32.
- Half- cylinders 31 and 32 may be formed, for example, of stainless steel.
- Half-cylinder 31 includes two longitudinal lateral rims 33, offset toward the outside, between which the two longitudinal free edges 34 of half-cylinder 32 engage in a closed position, to facilitate manual juxtapositioning of the half- cylinders.
- Each half-cylinder 31 and 32 has a plurality of radially disposed perforation pins 35, which may be formed, for example, by punching or embossing triangular elements into the walls of half-cylinders 31 and 32.
- the cross section of the resulting cylinder comprises approximates the contour of the catheter section being perforated, as in all the members of the first family embodiments of the present invention.
- apparatus 40 representing yet another member of the first family of embodiments is described.
- apparatus 40 includes joints 41 having an axis that is perpendicular to the longitudinal extent of jaws 42 and 43.
- Jaw 42 continues and forms part of tube 44, having an inside cross-section corresponding to the partial contour of the catheter or balloon to be perforated.
- Jaw 43 is connected by two lateral arms 45 to joints 41 comprising two lateral pivots fixed to tube 44.
- apparatus 10 of FIGS. 1 and 2 may have a width, in the direction of the joint axis, equal to the length of the passage 16 between the two jaws.
- passage 16 can be formed of two grooves of adequate cross section formed in jaws 11.
- the second family of embodiments is characterized by a cavity for receiving a catheter and holding the catheter in a predetermined relation to cam-actuated perforation means.
- Apparatus 50 in FIGS. 6A and 6B includes cylindrical block 51 having a central bore 52 and a plurality of radial bores 53 distributed about its circumference. As seen in FIG. 6B, central bore 53 extends through distal endface 54 of block 51, and may include tapered region 55. Each of radial bores 53 terminates in a recess 56 that accommodates an inward motion of a blade holder, described hereinafter, and ledge 57. Longitudinal slots 58 are disposed in block 51 along a diameter of radial bores 53 and recesses 56, and communicate with central bore 52.
- Block 51 may included threaded portion 59 extending from its proximal endface 60 to threadedly engage closure block 61.
- a perforation assembly 70 comprising actuator button 71 including blade holder 72, spring 73 and blade 74.
- Blade holder 72 includes a portion defining slot 75, so that blade 74 may be engaged, for example, by friction- fitting, within slot 75.
- Each blade 74 includes a plurality of perforation teeth 76.
- Perforation assembly 70 is slidingly disposed within radial bore 53 so that blade 74 is disposed in slot 57 and blade holder 72 can enter recess 56 in block 51 when perforation assembly 70 is fully depressed in an inward direction in radial bore 53.
- Spring 73 is captured against ledge 57 surrounding recess 56 to bias perforation assembly 70 in an outward direction.
- Actuator button 71 includes raised surface 77 that projects above the outer diameter of block 51 when spring 73 biases perforation assembly 70 to an outward position.
- Sleeve 80 is disposed in sliding relation about the outer diameter of block 51 and is captured between rim 62 at the distal end of block 51 and closure block 61.
- Sleeve 80 includes flanges 81 and 82 at either end that provide a close-fitting sliding relation between sleeve 80 and block 51.
- sleeve 80 has a length L that is greater than one-half of the length of block 51, so that flanges 81 and 82 do not contact raised surfaces 77 of actuator buttons 71 during proximal and distal movement of sleeve 80.
- Sleeve 80 further includes on its interior surface raised cam surface 83 that contacts raised surfaces 77 of actuator buttons 71 when sleeve 80 is moved in the proximal and distal directions along block 51.
- cam surface 83 depresses perforation assemblies 70 radially inward against the bias of spring 73 so that blades 74 extend into central bore 52.
- cam surface 83 does not contact raised surfaces 77 of the perforation assemblies.
- Closure block 61 includes central bore 63 aligned with central bore 52 in block 51. Closure block 61 is threadedly engaged to threaded portion 59 of cylindrical block 51, and serves as a proximal stop for sliding movement of sleeve 80. Closure block 61 further serves as a grip for supporting apparatus 50 during movement of sliding movement of sleeve 80, and may also provide flange 64 for accepting a coupling.
- Apparatus 80 may be constructed of sturdy materials that enables the apparatus to be re- sterilized and re-used repeatedly. Alternatively, apparatus 80 may be constructed primarily of rigid molded plastic, with only springs 73 and blades 74 formed of a metallic material. This latter construction would permit an economical, single-use, disposable product.
- apparatus 50 is employed to puncture a plurality of apertures in a standard catheter or balloon catheter to convert the catheter device into a drug infusion device.
- Apparatus 80 may be used on either a new catheter, or in a sterile environment, immediately subsequent to another non-invasive procedure, to convert a previously used catheter device into a drug delivery device. For example, once an angioplasty procedure has been completed, the catheter or balloon catheter used in that procedure may be rinsed in a sterile solution, and then, in a sterile environment, be perforated using apparatus 80 to accomplish a drug delivery task.
- Apparatus 80 is employed by first inserting a distal balloon of a balloon catheter through central bore 63 and central bore 52 so that the tip of the balloon catheter is visible through endface 54 of block 51. The balloon is then inflated to fill central bore 51, and sleeve 80 is moved in a proximal or distal direction (depending upon the pre ⁇ ent po ⁇ ition of ⁇ leeve 80) so that cam surface 83 depresses perforation assemblies 70.
- perforation teeth 76 of blades 74 puncture the balloon to create aperture ⁇ in the balloon.
- cam surface 83 moves off of raised surfaces 77 of perforation assemblies 70 and perforation teeth 76 are withdrawn from the balloon by the outward bias of spring 73.
- the punctured balloon may then be transluminally inserted into a patient's body vessel for a drug delivery task.
- a drug or therapeutic agent when injected into the balloon, the balloon inflates while the drug or therapeutic agent flows out of the apertures created by apparatus 80.
- the drug or therapeutic agent may exit through the aperture ⁇ with ⁇ ufficiently high velocity to penetrate the wall of the body ve ⁇ sel.
- the drug infusion step may be continued over a course of minutes using a syringe to pressurize the balloon, or over a longer period of time if a pressure bag is attached to the balloon, as is conventional for previously known drug infusion devices.
- apparatus 150 representing a second member of the second family of embodiments is described. Like parts of apparatus 150 are indicated by like-numerals to the parts of apparatus 50, increased by 100. Thus, for example, the cylindrical block of apparatus 150 is referred to as block 151. As will be apparent from inspection of FIGS. 7A and 7B, apparatus 150 include ⁇ cylindrical block 151, perforation assemblies 170, closure block 161 and sleeve 180 substantially as described above with respect to apparatus 50 of FIGS. 6A and 6B. Apparatus 150 further includes threaded portion 190 disposed from distal endface 154 of block 151, and endcap 192 threadedly engaged with threaded portion 190.
- Elastic member 193 is di ⁇ posed in bore 194 that communicates with central bore 152 of block 151.
- Elastic member 193 includes a bore that communicates with central bore 152 to receive the distal end of a catheter device to be perforated.
- Elastic member 193 further includes a ring portion interposed between the distal end of threaded portion 190 and beveled interior surface 195 of endcap 192.
- Endcap 190 and elastic member 193 of apparatus 150 serve to lock a catheter device to be perforated in position within apparatus 150 in the following fashion. First, the catheter or deflated balloon is inserted into central bore 152 through central bore 163 of closure block 161. The distal end of the catheter or balloon is then urged along central bore 152 until the tip of the catheter is visible through bore 194 of endcap 194.
- Endcap 192 is then tightened onto threaded portion 190 of block 190, whereby beveled interior surface 195 urges the ring portion of elastic member 193 against the endface of threaded portion 190.
- Thi ⁇ action reduces the inner diameter of the ring portion of elastic member 193, and effectively locks the catheter device into position within apparatus 150, thereby avoiding inadvertent longitudinal movement of the catheter within central bore 152 during the perforation step.
- apparatus 250 representing a third member of the second family of embodiments is described. Like parts of apparatus 250 are indicated by like-numerals to the parts of apparatus 150, increased by 100. Thus, for example, the cylindrical block of apparatus 250 is referred to as block 251. Except as otherwise de ⁇ cribed hereinbelow, the component ⁇ of apparatus 250 are substantially as described above with re ⁇ pect to apparatu ⁇ 50 and 150.
- FIG. 8A which corresponds to a cross- section similar to that of FIG. 7B (taken along view line 7B—7B of FIG. 7A) , cylindrical block 251 is shown having oversized central bore 252 and longitudinally- oriented key slot 296.
- key slot 296 accepts wings 297 of plug 298.
- Plug 298 includes bore 299 and longitudinal ⁇ lot ⁇ 300 that permit the perforation teeth of perforation a ⁇ semblies 270 to extend into bore 299 when ⁇ leeve 280 depre ⁇ e ⁇ perforation a ⁇ semblies in the fashion described hereinabove with respect to the embodiments of FIGS. 6 and 7.
- the foregoing arrangement enables apparatus
- plug 298 having a bore 299 appropriate for that size catheter or balloon is loaded into oversized bore 252 so that wings 297 of the plug are slidingly engaged in key slot 296.
- Plug 298 therefore hold ⁇ the catheter or balloon concentrically within oversized bore 252, so that when perforation assemblies 270 are depressed by sleeve 280, blades 274 pass through longitudinal slots 300 of plug 298 and into bore 299 to perforate the catheter or balloon located therein.
- FIGS. 9 and 10 apparatus 350, representing an alternative embodiment of apparatus 250 is described. Like parts of apparatu ⁇ 350 are indicated by like-numeral ⁇ to the parts of apparatus 150, increased by 200; except as otherwise described hereinbelow, the components of apparatus 350 are configured and operate substantially as described hereinabove.
- FIG. 9 corresponds to a cross-section similar to that of FIG. 7B, and shows cylindrical block 351 having oversized central bore 352 and centering ring 401 disposed therein.
- centering rings 410 are spaced apart a distance L j and fixed within oversized central bore 352 proximally and distally of the ends of slot 358, so as not to interfere with operation of perforation as ⁇ emblies 370.
- Centering rings comprise outer ring ⁇ 402 having a multiplicity of flexible fingers or bristle ⁇ 403 extending in a radially inward direction toward central aperture 404.
- Central aperture has a diameter about a ⁇ ⁇ mall as the smalle ⁇ t catheter device to be perforated by apparatus 350.
- Multiplicity of flexible fingers or bristles 403 enable centering rings to accommodate a variety of catheter diameters by flexing in proximal or distal directions, while ensuring that the catheter or balloon is centered within oversized central bore 352.
- Sleeve 380 includes cam surface illustratively having a series of steps 383a, 383b and 383c and indexing means (not shown) , for example, a spring-loaded ball bearing, to select and maintain a desired cam ⁇ urface in alignment with raised surfaces 376 of perforation assemblies 370.
- Step ⁇ 383a, 383b and 383c depress perforation assemblie ⁇ 370 by different amounts, thus causing blades 374 (not shown) to penetrate into oversized central bore 352 to a greater or lesser degree.
- Steps 383 may have radiused edges where they transition from one height to another. For example, if step 383a of cam surface 383 is used to actuate perforation assemblies, blades 374 will be advanced much further into central bore 352 than if step 383b is used. Likewise, step 383b re ⁇ ult ⁇ in a greater depth of penetration than ⁇ tep 383c.
- the ⁇ tep 383a-383c of cam ⁇ urface 383 selected to perforate a given catheter device may be selected by rotating sleeve 380 in a clockwise or counterclockwise manner to bring the desired step of the cam surface into alignment with raised surfaces 376 of the perforation a ⁇ emblies.
- Apparatus 350 therefore provides a universal perforation device, ⁇ ince any of a wide range of catheter device may be held concentrically within central bore 352 by centering rings 401, and the depth of penetration of perforation as ⁇ emblies 370 may be readily adju ⁇ ted by rotating sleeve 380. Consequently, the need to disa ⁇ semble the apparatus, for example, to replace plug 298 of the apparatus of FIGS. 8A and 8B is obviated, as i ⁇ the need to stock plugs 298 of different sizes.
- Apparatus constructed in accordance with the second family of embodiments described hereinabove may include any number of perforation as ⁇ emblie ⁇ to provide perforations either equi-spaced or grouped around the periphery of a standard catheter or balloon catheter.
- apparatus 150 illustratively includes four perforation assemblies, while apparatus 350 includes only three.
- a greater or le ⁇ er number may be u ⁇ ed depending upon the intended application of the drug delivery device.
- the number, length, thickne ⁇ s and positioning of teeth on the blades of the perforation as ⁇ emblies in apparatu ⁇ 50, 150, 250 and 350 depend upon the specific requirements of a particular application for a drug infusion device. These characteristic ⁇ may vary according to the number of apertures desired per unit of length of the balloon or catheter, and the distribution of the apertures around the contour of the catheter device.
- the teeth of the perforation as ⁇ emblie ⁇ may create aperture ⁇ in a catheter having any number of ⁇ hapes, for example, slit ⁇ , holes, etc., and such characteristics as are depicted herein are not to be understood to be limiting.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU41647/96A AU4164796A (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
EP95940032A EP0861143A4 (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
US09/068,635 US6378218B2 (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
PCT/US1995/014998 WO1997018067A1 (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1995/014998 WO1997018067A1 (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997018067A1 true WO1997018067A1 (en) | 1997-05-22 |
Family
ID=22250133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/014998 WO1997018067A1 (en) | 1995-11-16 | 1995-11-16 | Methods and apparatus for making a drug infusion device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0861143A4 (en) |
AU (1) | AU4164796A (en) |
WO (1) | WO1997018067A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6283951B1 (en) | 1996-10-11 | 2001-09-04 | Transvascular, Inc. | Systems and methods for delivering drugs to selected locations within the body |
US11896775B2 (en) | 2021-02-22 | 2024-02-13 | Automationspartner i Helsinborg AB | Catheter and process for manufacturing a catheter |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US183771A (en) * | 1876-10-31 | Improvement in apparatus for the manufacture of horse-collars | ||
US401918A (en) * | 1889-04-23 | Punch | ||
US562981A (en) * | 1896-06-30 | Belt or eyelet punch | ||
US3883953A (en) * | 1973-03-08 | 1975-05-20 | James W Saullo | Decorative ribbon shredder |
US4416039A (en) * | 1981-06-26 | 1983-11-22 | Miller Judith A | Artery or vein perforator |
US4976029A (en) * | 1990-01-12 | 1990-12-11 | Kennedy Thomas W | Hot dog cutter apparatus and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1368584A (en) * | 1963-09-09 | 1964-07-31 | Plastik Fabrik Elbenia Heine & | Device for drilling coil sleeves |
US3158157A (en) * | 1964-05-04 | 1964-11-24 | Risk George | Cigarette perforator |
GB1182779A (en) * | 1966-09-17 | 1970-03-04 | Fisons Pharmaceuticals Ltd | Inhalation Device |
SU1100106A1 (en) * | 1983-02-10 | 1984-06-30 | Предприятие П/Я А-3492 | Piercing apparatus |
US4621553A (en) * | 1984-05-30 | 1986-11-11 | Henry Gruchalski | Vertical pierce die |
US4574477A (en) * | 1984-08-06 | 1986-03-11 | The O. M. Scott & Sons Company | Hole cutter for plastic tubing |
-
1995
- 1995-11-16 EP EP95940032A patent/EP0861143A4/en not_active Withdrawn
- 1995-11-16 WO PCT/US1995/014998 patent/WO1997018067A1/en not_active Application Discontinuation
- 1995-11-16 AU AU41647/96A patent/AU4164796A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US183771A (en) * | 1876-10-31 | Improvement in apparatus for the manufacture of horse-collars | ||
US401918A (en) * | 1889-04-23 | Punch | ||
US562981A (en) * | 1896-06-30 | Belt or eyelet punch | ||
US3883953A (en) * | 1973-03-08 | 1975-05-20 | James W Saullo | Decorative ribbon shredder |
US4416039A (en) * | 1981-06-26 | 1983-11-22 | Miller Judith A | Artery or vein perforator |
US4976029A (en) * | 1990-01-12 | 1990-12-11 | Kennedy Thomas W | Hot dog cutter apparatus and method |
Non-Patent Citations (1)
Title |
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See also references of EP0861143A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6283951B1 (en) | 1996-10-11 | 2001-09-04 | Transvascular, Inc. | Systems and methods for delivering drugs to selected locations within the body |
US6685648B2 (en) | 1996-10-11 | 2004-02-03 | Transvascular, Inc. | Systems and methods for delivering drugs to selected locations within the body |
US11896775B2 (en) | 2021-02-22 | 2024-02-13 | Automationspartner i Helsinborg AB | Catheter and process for manufacturing a catheter |
Also Published As
Publication number | Publication date |
---|---|
EP0861143A1 (en) | 1998-09-02 |
AU4164796A (en) | 1997-06-05 |
EP0861143A4 (en) | 2003-06-11 |
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