Methods and apparatus for sizing fresh donor heart valves
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-029/00
A61B-005/107
출원번호
US-0434372
(2003-05-07)
등록번호
US-7367984
(2008-05-06)
발명자
/ 주소
Kulcinski,David L.
Salazar,Luis A.
Swanson,Dana K.
Tsuruta,Gary T.
Kendall,Roxanna K.
출원인 / 주소
Medtronic, Inc.
대리인 / 주소
Jaro,Mike
인용정보
피인용 횟수 :
15인용 특허 :
20
초록▼
A fresh donor tissue valve isolation annulus size comprising a handle and trigger or crank knob manipulated by the user moves a movable probe into proximity with a stationary probe so that the probes can be inserted into the tissue valve lumen. The user releases the trigger or crank, and a biasing m
A fresh donor tissue valve isolation annulus size comprising a handle and trigger or crank knob manipulated by the user moves a movable probe into proximity with a stationary probe so that the probes can be inserted into the tissue valve lumen. The user releases the trigger or crank, and a biasing mechanism urges the movable probe away from the stationary probe until the resistance presented by the valve annulus equals the biasing force. A gage coupled to the movable probe displays a measure of the valve annulus diameter as a function of the distance that the movable probe moves away from the stationary probe until restrained from further movement by the fresh tissue valve annulus.
대표청구항▼
The invention claimed is: 1. A sizing tool for sizing the tissue valve lumen of a tissue valve annulus of a fresh donor tissue valve isolation by a user comprising: means adapted to be grasped in a user's hand for supporting first and second probes; wherein the means for supporting the first and se
The invention claimed is: 1. A sizing tool for sizing the tissue valve lumen of a tissue valve annulus of a fresh donor tissue valve isolation by a user comprising: means adapted to be grasped in a user's hand for supporting first and second probes; wherein the means for supporting the first and second probes further comprises a handle mechanism having a handle grip adapted to be grasped by the user and a movable jaw supporting the second probe extending away from the movable jaw, respectively, the handle mechanism further comprising a fixed jaw supporting the first probe extending away from the fixed jaw, wherein: the handle mechanism comprises a gage platform; the movable jaw is supported by jaw guides between the gage platform and the fixed jaw; means operable by the user for moving the second probe toward the first probe while the first probe remains stationary in disposing the first and second probes in a starting position enabling insertion of the first and second probes into the tissue valve lumen; wherein the means for disposing the first and second probes in a starting position comprises a trigger mechanism having a trigger adapted to be pulled by the user grasping the handle grip to urge the movable jaw toward the fixed jaw thereby disposing the first and second probes in a starting position; means for linearly separating the first and second probes apart within the tissue valve lumen until the first and second probes are restrained from further movement by contact with the tissue valve annulus; wherein the means for separating the first and second probes apart comprises a bias spring disposed between the fixed jaw and the movable jaw that urges the movable jaw away from the fixed jaw to separate the first probe from the second probe; and means for measuring the separation distance that the first and second probes are moved apart, whereby the measurement provides an indication of the tissue valve lumen diameter. 2. The sizing tool of claim 1, wherein means for supporting comprises means for supporting first and second probes selected from small lumen measuring probes and large lumen measuring probes, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 3. The sizing tool of claim 1, wherein the trigger mechanism comprises a lever arm extending from the trigger and a pivot intermediate the lever arm and the trigger attaching the trigger mechanism to the handle and disposing the lever arm against the movable jaw, whereby the lever arm urges the movable jaw toward the fixed jaw along the jaw guides thereby disposing the first and second probes in the starting position as the trigger is pulled toward the handle grip. 4. The sizing tool of claim 3, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the trigger is released. 5. The sizing tool of claim 1, wherein the trigger mechanism comprises a lever arm extending from the trigger and a pivot intermediate the lever arm and the trigger attaching the trigger mechanism to the handle and disposing the lever arm against the movable jaw, whereby the lever arm urges the movable jaw toward the fixed jaw thereby disposing the first and second probes in the starting position as the trigger is pulled toward the handle grip. 6. The sizing tool of claim 5, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the trigger is released. 7. The sizing tool of claim 1, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the trigger is released. 8. The sizing tool of claim 1, wherein: the fixed jaw comprises a first attachment mechanism for attachment of the first probe to the fixed jaw and for release of the first probe from the fixed jaw; the movable jaw comprises a second attachment mechanism for attachment of the second probe to the movable jaw and for release of the second probe from the movable jaw, whereby the first and second probes can be selected from small lumen measuring probes and large lumen measuring probes and attached to the fixed and movable jaws, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 9. A sizing tool for sizing the tissue valve lumen of a tissue valve annulus of a fresh donor tissue valve isolation by a user comprising; a handle mechanism having a handle grip adapted to be grasped by the user, a gage platform, and a fixed jaw supporting a fixed probe extending away from the fixed jaw; a movable jaw supporting a movable probe extending away from the movable jaw; a jaw guide supporting the movable jaw for movement between the fixed jaw and the gage platform; a bias spring disposed between the fixed jaw and the movable jaw that urges the movable jaw away from the fixed jaw to separate the first probe from the second probe until the fixed and movable probes are restrained from further movement by contact with the tissue valve annulus; a trigger mechanism having a trigger adapted to be pulled by the user grasping the handle grip and a lever arm in contact with the moveable jaw and extending between the moveable jaw and the gage platform to urge the movable jaw against the bias spring toward the fixed jaw, thereby disposing the fixed and movable probes in a starting position enabling insertion of the fixed and movable probes into the tissue valve lumen; and a distance measuring gage supported by the gage platform having a gage spindle in operative contact with the movable jaw that measures the separation distance that the movable probe moves away from the fixed probe, whereby the measurement provides an indication the tissue valve lumen diameter. 10. The sizing tool of claim 9, wherein the trigger mechanism comprises a pivot intermediate the lever arm and the trigger attaching the trigger mechanism to the handle and disposing the lever arm against the movable jaw, whereby the lever arm urges the movable jaw toward the fixed jaw along the jaw guide thereby disposing the fixed and movable probes in the starting position as the trigger is pulled toward the handle grip. 11. The sizing tool of claim 10, wherein the distance-measuring gage provides a measurement of the separation distance that the second probe is from the first probe as the trigger is released by the user. 12. The sizing tool of claim 10, wherein: the fixed jaw comprises a first attachment mechanism for attachment of the fixed probe to the fixed jaw and for release of the fixed probe from the fixed jaw; the movable jaw comprises a second attachment mechanism for attachment of the movable probe to the movable jaw and for release of the movable probe from the movable jaw, whereby the fixed and movable probes can be selected from small lumen measuring probes and large lumen measuring probes and attached to the fixed and movable jaws, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 13. The sizing tool of claim 9, wherein: the fixed jaw comprises a first attachment mechanism for attachment of the fixed probe to the fixed jaw and for release of the fixed probe from the fixed jaw; the movable, jaw comprises a second attachment mechanism for attachment of the movable probe to the movable jaw and for release of the movable probe from the movable jaw, whereby the fixed and movable probes can be selected from small lumen measuring probes and large lumen measuring probes and attached to the fixed and movable jaws, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 14. The sizing tool of claim 9, wherein the gage displays the separation distance and the display is resettable to a reference value reading when the trigger is pulled to move the movable probe to the starting position. 15. A sizing tool for sizing the tissue valve lumen of a tissue valve annulus of a fresh donor tissue valve isolation by a user comprising; a handle mechanism having a handle grip adapted to be grasped by the user, a gage platform, and a fixed jaw supporting a fixed probe extending away from the fixed jaw; a movable jaw supporting a movable probe extending away from the movable jaw; a jaw guide supporting the movable jaw for non-pivoting movement between the fixed jaw and the gage platform; a bias spring disposed between the fixed jaw and the movable jaw that urges the movable jaw away from the fixed jaw to separate the first probe from the second probe until the fixed and movable probes are restrained from further movement by contact with the tissue valve annulus; a crank mechanism having a crank arm and a crank knob adapted to be engaged by the user grasping the handle grip to urge the movable jaw toward the fixed jaw, thereby disposing the fixed and movable probes in a starting position enabling insertion of the fixed and movable probes into the tissue valve lumen, the crank arm being non-pivotably attached to the moveable jaw; and a distance measuring gage supported by the gage platform having a gage spindle in operative contact with the movable jaw that measures the separation distance that the movable probe moves away from the fixed probe, whereby the measurement provides an indication the tissue valve lumen diameter. 16. The sizing tool of claim 15, wherein the distance measuring gage provides a measurement of the separation distance that the second probe is from the first probe as the crank knob is released by the user. 17. The sizing tool of claim 15, wherein depression of the crank knob urges the movable jaw toward the fixed jaw along the jaw guide thereby disposing the fixed and movable probes in the starting position. 18. The sizing tool of claim 17, wherein: the fixed jaw comprises a first attachment mechanism for attachment of the fixed probe to the fixed jaw and for release of the fixed probe from the fixed jaw; the movable jaw comprises a second attachment mechanism for attachment of the movable probe to the movable jaw and for release of the movable probe from the movable jaw, whereby the fixed and movable probes can be selected from small lumen measuring probes and large lumen measuring probes and attached to the fixed and movable jaws, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 19. The sizing tool of claim 15, wherein: the movable jaw comprises first and second opposite sides; and the crank mechanism comprises a crank arm extending from the crank knob to a point of attachment with the movable jaw on a selected one of the first and second sides to accommodate the right or left hand of the user, whereby the depression of the crank knob urges the movable jaw toward the fixed jaw along the jaw guides thereby disposing the fixed and movable probes in the starting position. 20. The sizing tool of claim 15, wherein the gage displays the separation distance and the display is resettable to a reference value reading when the crank knob is depressed to move the movable probe to the starting position. 21. A sizing tool for sizing the tissue valve lumen of a tissue valve annulus of a fresh donor tissue valve isolation by a user comprising: means adapted to be grasped in a user's hand for supporting first and second probes; wherein the means for supporting the first and second probes comprises a handle mechanism having a handle grip adapted to be grasped by the user and a movable jaw supporting the second probe extending away from the movable jaw, respectively, the handle mechanism further comprising a fixed jaw supporting the first probe extending away from the fixed jaw, wherein: the handle mechanism comprises a gage platform; the movable jaw is supported by jaw guides between the gage platform and the fixed jaw; means operable by the user for moving the second probe toward the first probe while the first probe remains stationary in disposing the first and second probes in a starting position enabling insertion of the first and second probes into the tissue valve lumen; wherein the means for disposing the first and second probes in a starting position comprises a crank mechanism having a crank knob adapted to be engaged by the user grasping the handle grip to urge the movable jaw toward the fixed jaw thereby disposing the first and second probes in a starting position; means for linearly separating the first and second probes apart within the tissue valve lumen until the first and second probes are restrained from further movement by contact with the tissue valve annulus; wherein the means for separating the first and second probes apart comprises a bias spring disposed between the fixed jaw and the movable jaw that urges the movable jaw away from the fixed jaw to separate the first probe from the second probe; and means for measuring the separation distance that the first and second probes are moved apart, whereby the measurement provides an indication of the tissue valve lumen diameter. 22. The sizing tool of claim 21, wherein the crank mechanism comprises a crank arm extending from the crank knob to a point of attachment with the movable jaw, whereby the depression of the crank knob urges the movable jaw toward the fixed jaw along the jaw guides thereby disposing the first and second probes in the starting position. 23. The sizing tool of claim 22, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the crank knob is released. 24. The sizing tool of claim 21, wherein the crank mechanism comprises a crank arm extending from the crank knob to a point of attachment with the movable jaw, whereby the depression of the crank knob urges the movable jaw toward the fixed jaw thereby disposing the first and second probes in the starting position. 25. The sizing tool of claim 24, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the crank knob is released. 26. The sizing tool of claim 21, wherein the measuring means comprises a distance measuring gage supported by the handle mechanism and in contact with the movable jaw that displays a measurement of the separation distance that the second probe is from the first probe as the crank knob is released. 27. The sizing tool of claim 21, wherein: the fixed jaw comprises a first attachment mechanism for attachment of the first probe to the fixed jaw and for release of the first probe from the fixed jaw; the movable jaw comprises a second attachment mechanism for attachment of the second probe to the movable jaw and for release of the second probe from the movable jaw, whereby the first and second probes can be selected from small lumen measuring probes and large lumen measuring probes and attached to the fixed and movable jaws, respectively, to measure small diameter tissue valve lumens or large diameter tissue valve lumens, respectively. 28. The sizing tool of claim 21, wherein: the movable jaw comprises first and second opposite sides; and the crank mechanism comprises a crank arm extending from the crank knob to a point of attachment with the movable jaw on a selected one of the first and second sides to accommodate the right or left hand of the user, whereby the depression of the crank knob urges the movable jaw toward the fixed jaw along the jaw guides thereby disposing the first and second probes in the starting position.
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이 특허에 인용된 특허 (20)
Hinnenkamp Thomas F., Adjustable sizing apparatus.
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Nguyen-Thien-Nhon Diana, Stentless bioprosthetic heart valve with coronary protuberances and related methods for surgical repair of defective heart valves.
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