Medical devices with detachable pivotable jaws
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/128
A61B-017/122
A61B-017/08
A61B-017/10
A61B-017/00
A61B-017/12
A61B-017/29
출원번호
US-0568841
(2014-12-12)
등록번호
US-9955977
(2018-05-01)
발명자
/ 주소
Martinez, Michelle D.
Surti, Vihar C.
McLawhorn, Tyler Evans
출원인 / 주소
Cook Medical Technologies LLC
대리인 / 주소
Brinks Gilson & Lione
인용정보
피인용 횟수 :
0인용 특허 :
122
초록▼
Medical systems, devices and methods are provided for engaging tissue, e.g. for clipping tissue, closing a perforation or performing hemostasis. Generally, the medical system including a housing, first and second jaws rotatable relative to the housing, a driver, and an elongate drive wire. The elong
Medical systems, devices and methods are provided for engaging tissue, e.g. for clipping tissue, closing a perforation or performing hemostasis. Generally, the medical system including a housing, first and second jaws rotatable relative to the housing, a driver, and an elongate drive wire. The elongate drive wire may be disconnected from the driver, first and second jaws, and the housing, which are left in vivo engaged with the tissue.
대표청구항▼
1. A medical system for engaging tissue, the medical system comprising: a housing defining an internal passageway and a longitudinal axis extending between proximal and distal ends of the housing, the housing including a guide surface along the internal passageway, the guide surface including a prox
1. A medical system for engaging tissue, the medical system comprising: a housing defining an internal passageway and a longitudinal axis extending between proximal and distal ends of the housing, the housing including a guide surface along the internal passageway, the guide surface including a proximal section and a distal section;a first jaw pivotally connected to the housing, the first jaw having proximal and distal ends;a second jaw pivotally connected to the housing, the second jaw having proximal and distal ends;a driver engaged with the proximal ends of the first and second jaws, longitudinal movement of the driver rotating the first and second jaws relative to the housing, the longitudinal movement of the driver guided by the guide surface of the housing, the driver including a socket facing proximally and constructed of a resilient material that is flexible;an elongated drive wire selectively connected to the driver for longitudinal movement therewith, the drive wire having an enlarged portion proximate a distal end of the drive wire, the enlarged portion selectively received within the socket of the driver;a tubular member defining a lumen sized to slidably receive a connection block, the connection block defining a bore slidably receiving the drive wire, the enlarged portion of the drive wire having a size that is larger than the bore and positioned on a distal side of the connection block, the connection block operable between an extended position and a retracted position, the connection block projecting from the tubular member in the extended position and structured to engage a proximal end of the housing, the connection block positioned within the lumen of the tubular member in the retracted position and disengaged from the housing; andthe medical system operable between four states corresponding to four longitudinal positions of the enlarged portion of the drive wire, a first longitudinal position being distal to a second longitudinal position, the second longitudinal position being distal to a third longitudinal position, and the third longitudinal position being distal to a fourth longitudinal position;wherein, in the first longitudinal position, the enlarged portion is located in the distal section of the guide surface and the socket firmly engages the drive wire;wherein, in the second longitudinal position, the enlarged portion is located in the proximal section of the guide surface and the socket loosely and detachably engages the drive wire;wherein, in the third longitudinal position, the socket is disengaged from the enlarged portion of the drive wire; andwherein, in the fourth longitudinal position, the enlarged portion of the drive wire engages the connection block to operate the connection block from its extended position to its retracted position and disengage the connection block from the housing. 2. The medical system of claim 1, wherein the first and second jaws are both slidably and pivotally connected to the housing, the first and second jaws configured to slide longitudinally relative to the housing. 3. The medical system of claim 1, wherein the distal section of the guide surface is sized relative to the socket such that, when the socket is within the distal section, the socket non-releasably engages the enlarged portion of the drive wire. 4. The medical system of claim 1, wherein the distal section has a smaller effective diameter than the proximal section of the guide surface. 5. The medical system of claim 1, wherein the driver includes a locking tab positioned at an entrance to the socket that moves to vary the size of the entrance, and wherein the locking tab is moved radially inwardly when the driver and socket move distally from the proximal section to the distal section of the guide surface. 6. The medical system of claim 5, wherein the distal section of the guide surface is sized relative to the socket such that, when the socket is within the distal section, the locking tab is pressed against the drive wire. 7. The medical system of claim 5, wherein the driver includes two locking tabs on opposing sides of the entrance to the socket, and wherein the two locking tabs are moved radially inwardly by the distal section of the guide surface. 8. The medical system of claim 5, wherein the housing defines a shoulder at a transition between the proximal section and distal section of the guide surface, and wherein the locking tab is positioned to engage the shoulder to limit longitudinal movement of the driver. 9. The medical system of claim 5, wherein the locking tab is plastically deformable. 10. The medical system of claim 5, wherein the shoulder deflects the tab radially inwardly to a position into engagement with the drive wire when a distally directed longitudinal force on the driver reaches a predetermined force to permit longitudinal movement of the driver and the first and second jaws in a distal direction. 11. The medical system of claim 10, wherein, when the socket is located in the proximal section of the guide surface and a proximally directed longitudinal force on the drive wire reaches a predetermined force, the enlarged portion of the drive wire deflects the tab radially outwardly such that the drive wire is releasably connected to the driver. 12. The medical system of claim 1, wherein the first and second jaws are slidably and pivotally connected to the housing, and wherein the first and second jaws are non-detachably connected to the housing. 13. The medical system of claim 1, wherein the guide surface is defined by two grooves formed on opposite sides of the internal passageway. 14. The medical system of claim 1, wherein the driver includes a locking tab positioned at an entrance to the socket that moves to vary the size of the entrance, and wherein the entrance has a smallest size in the first longitudinal position, and a largest size in the third longitudinal position, and wherein the locking tabs of the socket have a natural, unbiased configuration where the socket is engaged with the drive wire. 15. The medical system of claim 14, wherein the locking tab is pressed against the drive wire in the first longitudinal position. 16. The medical system of claim 14, wherein the guide surface includes a proximal section and a distal section, the distal section having a smaller effective diameter than the proximal section of the guide surface. 17. The medical system of claim 1, wherein the connection block includes a distal flange and a proximal flange defining a reduced diameter portion therebetween, and wherein the tubular member includes one of a pin and a tab projecting into the lumen and positioned within the reduced diameter portion to limit longitudinal movement of the connection block. 18. The medical system of claim 17, further comprising a locking device having a forked strut defined by two tines having a slot therebetween, the slot sized to receive the drive wire therein, the tubular member including an opening therein sized to receive the forked strut in a position to limit longitudinal movement of the connection block while the connection block projects from the tubular member.
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