Claims
- 1. In a surgical procedure that employs insertion of a needle-form instrument through the skin and along a path to a deeper lying site, the puncture at said site creating a risk of hemorrhage, the step of completing the procedure comprising providing a hemostatic element comprised of hemostatic material, said element having its exterior constructed to directly, slidably engage tissue bounding said path, locating said hemostatic element at said site by pushing said element to slide along an elongated member disposed in said path as the exterior of said element slidably engages said tissue bounding said path, withdrawing said elongated member, blood from said site thereafter causing said hemostatic element to swell in the region previously occupied by said elongated member to prevent hemorrhage.
- 2. In a surgical procedure that employs insertion of a needle-form instrument through the skin and along to a deeper lying site, the puncture at said site creating a risk of hemorrhage, the step of completing the procedure comprising providing a hemostatic element comprised of hemostatic material, said element having its exterior constructed to directly, slidably engage tissue bounding said path, locating said hemostatic element at said site by pushing said element to slide along an elongated member disposed in said path as the exterior of said element slidably engages said tissue bounding said path, withdrawing said elongated member, blood from said site thereafter causing said hemostatic element to swell in the region previously occupied by said elongated member to prevent hemorrhage, the cross-sectional diameter of said hemostatic element being larger than the cross-sectional diameter of said elongated member.
- 3. In a surgical procedure that employs insertion of a needle-form instrument through the skin and along a path to a deeper lying site, the puncture at said site creating a risk of hemorrhage, the step of completing the procedure comprising providing a hemostatic element comprised of hemostatic material, said element having its exterior constructed to directly, slidably engage tissue bounding said path, locating said hemostatic element at said site by pushing said element to slide along an elongated member disposed in said path as the exterior of said element slidably engages said tissue bounding said path, withdrawing said elongated member, blood from said site thereafter causing said hemostatic element to swell in the region previously occupied by said elongated member to prevent hemorrhage, the cross-sectional diameter of said hemostatic element being selected to be larger than the cross-sectional diameter of said puncture.
- 4. The surgical procedure of claim 3, wherein the portion of said hemostatic element that forms its exterior is in a hard state, during insertion, and has a surface of low coefficient of friction.
- 5. A sheath element of hemostatic material configured as a plug having an outer region and a hollow central region for use with a medical device which has accessed a site of a body within a human patient, said hollow region of said sheath element located over exterior surfaces of said medical device in an initial position of said sheath element away from said site, said hollow region providing means for permitting relative sliding motion between said sheath element and said medical device to position said sheath element at said site whereby blood from said site thereafter causes said sheath element to swell within said hollow region previously occupied by said medical device to prevent hemorrhage.
- 6. The sheath element of claim 5, wherein said outer region of said hemostatic sheath element has a hard outer surface.
- 7. The sheath element of claim 5, said medical device having an elongated profile and cross-sectional diameter and wherein the cross-sectional diameter of said hemostatic sheath element is larger than the cross-sectional diameter of said elongated member.
Parent Case Info
This application is a continuation of Ser. No. 08/219,169 filed Mar. 28, 1994 now U.S. Pat. No. 5,447,502 which is a continuation of Ser. No. 08/084,135 filed Jul. 1, 1993 now U.S. Pat. No. 5,330,445 which is a division of Ser. No. 07/896,588 filed Jun. 10, 1992 now U.S. Pat. No. 5,254,105 which is a continuation in part of Ser. No. 07/787,518 filed Nov. 4, 1991 now U.S. Pat. No. 5,195,988 which is a division of Ser. No. 07/514,769 filed Apr. 26, 1990 now U.S. Pat. No. 5,080,655 which is a division of Ser. No. 07/288,858 filed Dec. 23, 1988 now U.S. Pat. No. 4,936,835 which is a continuation in part of Ser. No. 07/199,130 filed May 26, 1988 now U.S. Pat. No. 4,838,280.
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Divisions (3)
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896588 |
Jun 1992 |
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514769 |
Apr 1990 |
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288858 |
Dec 1988 |
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Continuations (2)
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219169 |
Mar 1994 |
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Parent |
84135 |
Jul 1993 |
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Continuation in Parts (2)
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787518 |
Nov 1991 |
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199130 |
May 1988 |
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