Source: http://www.google.com/patents/US6755777?dq=%22peter+l+basel%22+%22lsi+logic%22
Timestamp: 2016-10-25 09:34:00
Document Index: 697299610

Matched Legal Cases: ['art.\n11', 'art.\n15', 'art.\n16', 'art.\n23', 'art.\n25', 'art.\n26', 'art.\n29', 'art.\n30', 'art.\n31', 'art. 32', 'art.\n33', 'art.\n34', 'art.\n37', 'art.\n38', 'art.\n39', 'art.\n43', 'art.\n44', 'art.\n47', 'art.\n48', 'art.\n49', 'art 14', 'art 14', 'art 40']

Patent US6755777 - Heart wall tension reduction apparatus and method - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn apparatus for treatment of a failing heart by reducing the wall tension therein. In one embodiment, the apparatus includes a tension member for drawing at least two walls of a heart chamber toward each other. Methods for placing the apparatus on the heart are also provided....http://www.google.com/patents/US6755777?utm_source=gb-gplus-sharePatent US6755777 - Heart wall tension reduction apparatus and methodAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6755777 B2Publication typeGrantApplication numberUS 10/326,585Publication dateJun 29, 2004Filing dateDec 20, 2002Priority dateJan 2, 1997Fee statusPaidAlso published asCA2275766A1, CA2275766C, DE69737955T2, EP1011461A1, EP1011461A4, EP1011461B1, US6050936, US6059715, US6162168, US6165119, US6165120, US6332863, US6332864, US6514194, US6589160, US6793618, US7695425, US20020058855, US20020068849, US20020077524, US20030166992, US20030171641, US20040167374, US20090137863, WO1998029041A1Publication number10326585, 326585, US 6755777 B2, US 6755777B2, US-B2-6755777, US6755777 B2, US6755777B2InventorsCyril J. Schweich, Jr., Todd J. MortierOriginal AssigneeMyocor, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (145), Non-Patent Citations (82), Referenced by (99), Classifications (26), Legal Events (8) External Links: USPTO, USPTO Assignment, EspacenetHeart wall tension reduction apparatus and method
US 6755777 B2Abstract
an elongate member configured to extend externally around an apex of at least one heart chamber, the elongate member having a first end and a second end; a first member extending from the first end of the elongate member and being configured to be positioned adjacent a first wall of the heart; and a second member extending from the second end of the elongate member and being configured to be positioned adjacent a second wall of the heart, wherein the device is configured to passively compress the at least one chamber during systole. 2. The device of claim 1, wherein the device is configured to alter a cross-sectional shape of the at least one chamber.
3. The device of claim 1, wherein the device is configured to reduce a radius of curvature of the at least one chamber.
4. The device of claim 1, wherein the device is configured to compress the at least one chamber during diastole.
5. The device of claim 1, wherein the device is configured to compress the at least one chamber throughout the cardiac cycle.
6. The device of claim 1, wherein the elongate member is substantially rigid.
7. The device of claim 1, wherein the first member and the second member are configured to be biased toward the heart when positioned adjacent the respective first wall and second wall.
8. The device of claim 1, further comprising a tension member configured to extend between the first member and the second member.
9. The device of claim 8, wherein the tension member is configured to extend transverse the at least one heart chamber.
10. The device of claim 8, wherein the tension member is configured to bias the first member and the second member toward the heart.
11. The device of claim 1, wherein the first member and the second member are hingedly connected to the respective first end and second end of the elongate member.
12. The device of claim 1, wherein the first member and the second member are lever members.
13. A method for treating a heart, the method comprising:
providing a substantially rigid frame; placing the frame relative to the heart such that at least part of the frame extends externally around at least an apical portion of the heart; and passively compressing at least one chamber of the heart via the frame. 14. The method of claim 13, further comprising altering a cross-sectional shape of the at least one chamber of the heart.
15. The method of claim 13, further comprising reducing a radius of curvature of the at least one chamber of the heart.
16. The method of claim 13, wherein the passively compressing includes passively compressing the at least one chamber during systole.
17. The method of claim 13, wherein the passively compressing includes passively compressing the at least one chamber during diastole.
18. The method of claim 13, wherein the passively compressing includes passively compressing the at least one chamber throughout the cardiac cycle.
19. The method of claim 13, further comprising drawing walls of the heart toward each other via the frame.
20. The method of claim 19, wherein the walls include walls surrounding the at least one heart chamber.
21. The method of claim 13, further comprising providing a tension member and extending the tension member transverse the at least one heart chamber and between portions of the frame.
22. The method of claim 21, further comprising extending the tension member between a first member and a second member of the frame so as to bias the first member and the second member toward the heart.
23. A method for treating a heart, the method comprising:
placing a device relative to the heart such that at least part of the device extends externally around at least an apical portion of the heart; and at least during systole, passively compressing at least one chamber of the heart via the device. 24. The method of claim 23, further comprising altering a cross-sectional shape of the at least one chamber of the heart.
25. The method of claim 23, further comprising reducing a radius of curvature of the at least one chamber of the heart.
26. The method of claim 23, wherein the passively compressing includes passively compressing the at least one chamber throughout the cardiac cycle.
27. The method of claim 23, further comprising drawing walls of the heart toward each other via the device.
28. The method of claim 27, wherein the walls include walls surrounding the at least one chamber of the heart.
29. The method of claim 23, wherein the device includes a tension member and the method further comprises extending the tension member transverse the at least one chamber of the heart.
30. The method of claim 23, wherein the placing the device includes placing at least an additional portion of the device at least partially within the at least one chamber of the heart.
31. A device for treating a heart, the device comprising:
means for passively compressing at least one chamber of the heart at least during systole and for extending externally around an apical portion of the heart. 32. The device of claim 31, wherein the means include means for altering a cross-sectional shape of the at least one chamber of the heart.
33. The device of claim 31, wherein the means include means for reducing a radius of curvature of the at least one chamber of the heart.
34. The device of claim 31, wherein the means for passively compressing include means for passively compressing the at least one chamber throughout the cardiac cycle.
35. The device of claim 31, wherein the means include means for drawing walls of the heart toward each other.
36. The device of claim 35, wherein the walls include walls surrounding the at least one chamber of the heart.
37. The device of claim 31, wherein the means include a tension member configured to extend transverse the at least one chamber of the heart.
38. The device of claim 31, wherein the means include means configured to be placed at least partially within the at least one chamber of the heart.
39. The device of claim 31, wherein the means include substantially rigid means.
40. The device of 31, wherein the means include a frame.
41. A device for treating a heart, the device comprising:
a member configured to extend externally around an apical portion of the heart, wherein the device is configured to passively compress at least one chamber of the heart at least during systole. 42. The device of claim 41, wherein the device is configured to alter a cross-sectional shape of the at least one chamber of the heart.
43. The device of claim 41, wherein the device is configured to reduce a radius of curvature of the at least one chamber of the heart.
44. The device of claim 41, wherein the device is configured to passively compressing the at least one chamber throughout the cardiac cycle.
45. The device of claim 41, wherein the device is configured to draw walls of the heart toward each other.
46. The device of claim 45, wherein the walls include walls surrounding the at least one chamber of the heart.
47. The device of claim 41, further comprising a tension member configured to extend transverse the at least one chamber of the heart.
48. The device of claim 41, wherein at least a portion of the device is configured to be placed at least partially within the at least one chamber of the heart.
49. The device of claim 41, wherein the member is substantially rigid.
50. The device of 41, further comprising a frame, the frame including the member.
This application is a continuation of application Ser. No. 09/985,362, filed Nov. 2, 2001, now U.S. Pat. No. 6,514,194 which is a continuation of application Ser. No. 09/697,596, filed Oct. 27, 2000, now U.S. Pat. No. 6,332,863, which is a continuation of application Ser. No. 09/543,155, filed Apr. 4, 2000, now U.S. Pat. No. 6,165,120, which is a continuation of application Ser. No. 09/224,349, filed Jan. 4, 1999, now U.S. Pat. No. 6,165,119, which is a divisional of application Ser. No. 08/933,456, filed Sep. 18, 1997, now U.S. Pat. No. 5,961,440, which is a continuation-in-part of application Ser. No. 08/778,277, filed Jan. 2, 1997, now U.S. Pat. No. 6,050,936, all of which are incorporated herein by reference.
The syndrome of heart failure is a common course for the progression of many forms of heart disease. Heart failure may be considered to be the condition in which an abnormality of cardiac function is responsible for the inability of the heart to pump blood at a race commensurate with the requirements of the metabolizing tissues, or can do so only at an abnormally elevated filling pressure. There are many specific disease processes that can lead to heart failure with a resulting difference in pathophysiology of the failing heart, such as the dilatation of the left ventricular chamber. Etiologies that can lead to this form of failure include idiopathic cardiomyopathy, viral cardiomyopathy, and ischemic cardiomyopathy.
In yet another embodiment of a heart wall tension reduction apparatus in accordance with the present invention, a rigid elongate frame member is provided. The frame member can extend through one or more chambers of the heart. One or more cantilever members can be disposed at opposite ends of the frame member. Each cantilever member includes at least one atraumatic cad disposed thereon. The atraumatic pads disposed at opposite ends of the frame member can be biased toward each other to compress the heart chamber.
One method of placing a heart wall tension apparatus or splint on a human hearts includes the step of extending a hollow needle through at least one chamber of the heart such that each end of the needle is external to the chamber. A flexible leader is connected to a first end of a tension member. A second end of the tension member is connected to an atraumatic pad. The leader is advanced through the needle from one end of he needle to the other. The leader is further advanced until the second end of the tension member is proximate the heart and the first end of the tension member is external to the heart. A second atraumatic pad is connected to the first end of the tension member such that the first and second atraumatic pads engage the heart.
FIG. 18 is a vertical cross-sectional view of the heart 14 as shown in FIG. 7, wherein a splint 16 has been placed to draw the scar tissue 24 toward an opposite wall of left ventricle 10. As a consequence of placing splint 16, the radius or cross-sectional area of the left ventricle affected by the scar tissue 24 is reduced. The reduction of this radius or cross-sectional area results in reduction in the wall stress in the left ventricular wall and thus improves heart-pumping efficiency.
FIG. 24 is a vertical cross-sectional view of a chamber of a heart 14. A needle 60 having a stylet inserted therethrough is inserted through chamber 10. FIG. 25 shows needle 60 disposed in heart 40 as shown in FIG. 24. In FIG. 25, stylet 6 has been removed. A tension member 64 having a flexible leader 66 attached to one end of tension member 64, is threaded through needle 60 and an anchor 68.
FIG. 37 is a view of the idealized heart chamber 48 of FIG. 36 wherein the chamber has been splinted along its length L such that a “figure eight” cross-section has been formed along the length thereof. It should be noted that the perimeter of the circular transverse cross-section of the chamber in FIG. 36 is equal to the perimeter of the figure eight transverse cross-section of FIG. 37. For purposes of t is model, opposite lobes of the figure in cross-section are assumed to be mirror images.
R2=R1π/2π−θ)
A2=2π(R2)2 (1−θ/2π)+hl Where chamber 48 is unsplinted as shown in FIG. 36 A1, the original cross-sectional area of the cylinder is equal to A2 where θ=180�, h=0 and l=2R2. Volume equals A2 times length L and circumferential wall tension equals pressure within the chamber times R2 times the length L of the chamber.
FIGS. 39 and 40 show a hypothetical distribution of wall tension T and pressure P for the figure eight cross-section. As θ goes from 180� to 0�, tension T2 in the splint goes from 0 to a 2T load where the chamber walls carry a T load.
It will be understood that this disclosure is in many is respects, is only illustrative. Changes may be made in details, particularly in matters of shape, size, material, and arrangement of parts without exceeding the scope of the invention. Accordingly, the scope of the invention is as defined in the language of the appended claims.
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systemsUSD717954Oct 14, 2013Nov 18, 2014Mardil, Inc.Heart treatment device* Cited by examinerClassifications U.S. Classification600/16, 600/37International ClassificationA61F2/00, A61F2/02, A61B17/00, A61B19/00, A61B17/12, A61B17/122, A61B17/04, A61N1/362, A61M31/00Cooperative ClassificationY10S623/91, A61B2017/048, A61B2017/0417, A61F2/2481, A61B17/00234, A61B2017/0461, A61F2/2487, A61B17/1227, A61B2017/0429, A61B2017/0496, A61B2017/00243, A61B2017/0435, A61B2017/0404European ClassificationA61F2/24W4, A61B17/00ELegal EventsDateCodeEventDescriptionAug 31, 2004CCCertificate of correctionSep 5, 2007ASAssignmentOwner name: VENTURE LENDING & LEASING IV, INC., CALIFORNIAFree format text: SECURITY AGREEMMENT;ASSIGNOR:MYOCOR, INC.;REEL/FRAME:019805/0072Effective date: 20070820Owner name: VENTURE LENDING & LEASING IV, INC.,CALIFORNIAFree format text: SECURITY AGREEMMENT;ASSIGNOR:MYOCOR, INC.;REEL/FRAME:019805/0072Effective date: 20070820Dec 31, 2007FPAYFee paymentYear of fee payment: 4Jan 7, 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