IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0849387
(2013-03-22)
|
등록번호 |
US-8702750
(2014-04-22)
|
발명자
/ 주소 |
- Zhu, Yong Hua
- Kirsch, Wolff M.
|
출원인 / 주소 |
|
대리인 / 주소 |
Knobbe, Martens, Olson & Bear, LLP.
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
144 |
초록
▼
A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed.
A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. The vascular puncture wound is sealed by natural blood clot formation.
대표청구항
▼
1. An assembly for locating and closing a vascular puncture, comprising: an elongate catheter having a lumen sized and adapted to accommodate a guidewire threaded therethrough, the catheter configured to slide over the guidewire so that a distal tip of the catheter extends through the vascular punct
1. An assembly for locating and closing a vascular puncture, comprising: an elongate catheter having a lumen sized and adapted to accommodate a guidewire threaded therethrough, the catheter configured to slide over the guidewire so that a distal tip of the catheter extends through the vascular puncture;a hemostatic member comprising a hemostatic agent, the hemostatic member positioned on the catheter and arranged so as to extend circumferentially around an outer surface of the catheter, the hemostatic member having first and second layers, the second layer of the hemostatic member being soft and pliable, the first layer of the hemostatic member having a greater mechanical strength than the second layer of the hemostatic member;a retractor selectively movable between a closed position and an open position, the retractor configured to engage the outer surface of the catheter when in the closed position so that the hemostatic member is blocked from moving longitudinally over the catheter distally past the retractor when the retractor is in the closed position, the retractor configured when in the open position to provide sufficient space for the hemostatic member to move longitudinally over the catheter and through the open retractor; andan elongate push member proximal of the hemostatic member and configured to engage the hemostatic member and apply a distally-directed force to push the hemostatic member distally over the catheter;wherein the hemostatic member is cohesive so that when the push member engages and applies a distally-directed force to only a portion of one side of the hemostatic member, the entire hemostatic member moves distally over the catheter as a cohesive unit, and at least a portion of the hemostatic member remains distal of a distal end of the push member. 2. The assembly of claim 1, wherein the first layer of the hemostatic member comprises a polymer. 3. The assembly of claim 2, wherein the retractor has a plurality of elongate retractor arms, the retractor arms being movable between the closed position and the open position. 4. The assembly of claim 3, wherein the retractor is configured to engage and mount upon the outer surface of the catheter when in the closed position sufficient so that the catheter and retractor move together as a unit. 5. The assembly of claim 4, wherein the hemostatic member is mounted proximal of at least part of the retractor arms. 6. The assembly of claim 5, wherein the hemostatic member is not compressed within a housing. 7. The assembly of claim 2, wherein the first layer of the hemostatic member has greater elasticity than the second layer of the hemostatic member. 8. The assembly of claim 7, wherein the first and second layers of the hemostatic member are attached to each other by a cement. 9. The assembly of claim 7, wherein the first and second layers of the hemostatic member are integrally formed. 10. The assembly of claim 7, wherein the hemostatic member is configured so that a puncture hole through the first and second layers is substantially sealingly closed by the elastic first layer. 11. The assembly of claim 7, wherein the hemostatic member comprises an anti-inflammatory drug and/or an antibiotic. 12. The assembly of claim 2, wherein the catheter comprises an engagement portion adapted to engage edges of the puncture without being inflated, the uninflated engagement portion sized to flex the puncture edges sufficient to substantially plug the puncture so as to create a seal between the catheter and the puncture edges. 13. The assembly of claim 12, wherein the catheter comprises a distal tip having a first outer diameter, and the engagement portion is proximal the distal tip and has a second diameter that is greater than the first diameter. 14. The assembly of claim 12, wherein the catheter is attachable to a source of suction, and a hole is formed through a wall of the catheter near a distal end of the lumen. 15. The assembly of claim 2, wherein the first layer of the hemostatic member is disposed proximal of the second layer of the hemostatic member. 16. The assembly of claim 2, wherein blood flows into the hemostatic member and the hemostatic member soaks up blood. 17. The assembly of claim 1, wherein the hemostatic member has a greater diameter than the push member so that the push member engages only a portion of a side of the hemostatic member. 18. The assembly of claim 17, additionally comprising an elongate release rod, wherein the push member comprises an elongate body and a proximal handle portion, and a longitudinal lumen is formed through the push member, the longitudinal lumen slidingly accommodating the catheter therewithin, and the elongate release rod is configured to slidably fit through the push member lumen. 19. The assembly of claim 18, wherein the push member lumen is adapted to communicate a flowable adhesive therethrough, and the push member body has a plurality of holes formed through a side wall thereof near a distal end of the body. 20. The assembly of claim 1, wherein the hemostatic member is coated with an adhesive.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.