Device and method for suturing of internal puncture sites
First Claim
1. A puncture site closure device, comprising:
- an elongated shaft having, a proximal end and a distal end;
a transition region disposed adjacent the distal end of the elongated shaft and having a proximal end and a distal end thereby defining an axial length therebetween, wherein the transition region defines an oval cross-section at the distal end and an oval cross-section at the proximal end, and wherein the cross-sectional orientation of the transition region changes over the axial length of the transition region such that the oval cross-section at the proximal end of the transition region has a major axis disposed at an angle relative to a major axis of the oval cross-section at the distal end of the transition region; and
a needle disposed within a needle lumen defined by the elongated shaft, the needle being advanceable out of the needle lumen and across the transition region to penetrate tissue disposed in the transition region.
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Abstract
A suture applying device comprises a shaft having a nose piece attached at its distal end. The shaft and the nose piece are separated by a transition region, and a needle entry lumen in the shaft permits a flexible needle to be introduced in the distal direction. The needle is able to cross the transition region and penetrate tissue held therein and enter into a return lumen in the nose piece. The return lumen is U-shaped and acts to bend the flexible needle as it is advanced. In this way, the needle passes from the nose piece through the transition region in a proximal direction, and is able to pass through tissue within the transition region generally on the opposite side of a tissue puncture from the first suture passage. The needle then exits from the device, permitting the suture attached to the needle to be drawn fully through the device. The suture may then be tied in order to close and seal the tissue penetration.
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Citations
18 Claims
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1. A puncture site closure device, comprising:
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an elongated shaft having, a proximal end and a distal end; a transition region disposed adjacent the distal end of the elongated shaft and having a proximal end and a distal end thereby defining an axial length therebetween, wherein the transition region defines an oval cross-section at the distal end and an oval cross-section at the proximal end, and wherein the cross-sectional orientation of the transition region changes over the axial length of the transition region such that the oval cross-section at the proximal end of the transition region has a major axis disposed at an angle relative to a major axis of the oval cross-section at the distal end of the transition region; and a needle disposed within a needle lumen defined by the elongated shaft, the needle being advanceable out of the needle lumen and across the transition region to penetrate tissue disposed in the transition region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of closing a puncture in a wall of tissue, the method comprising:
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providing a puncture site closure device, the puncture site closure device comprising an elongated shaft having a transition region, the transition region defining a tissue receiving gap, further comprises providing the transition region having a proximal end and a distal end, wherein the transition region defines an oval cross-section at the distal end and an oval cross-section at the proximal end, and wherein the cross-sectional orientation of the transition region changes over the axial length of the transition region such that the oval cross-section at the proximal end of the transition region has a major axis disposed at an angle relative to a major axis of the oval cross-section at the distal end of the transition region; advancing the shaft through the puncture such that the opposed edges of the puncture are receiving the gap; and distending the edges of the puncture with the transition region to position the edges of the puncture in preparation for closing the puncture. - View Dependent Claims (10, 11, 12)
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13. A puncture site closure device comprising:
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an elongated shaft having a proximal end and a distal end, thereby defining a needle lumen disposed therebetween; a transition region disposed adjacent the distal end of the elongated shaft, the transition region having a proximal end and a distal end, wherein the transition region defines a cross-section having a first width greater than a second width, the cross-section being perpendicular to an axis of the shaft, and wherein the orientation of the first width changes over the axial length of the transition region in the proximal direction; and a needle disposed within a needle lumen, the needle being advanceable out of the needle lumen and across the transition region to penetrate tissue disposed in the transition region. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification