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Vascular clamp
| Details |
Inventors: Dunn, David C.; Scarrow, David;
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
A vascular clamp for use in surgery has a body in the form of a tapering flexible envelope, with an inlet tube at the broader end. An external strip at the broader end provides a slot through which the tail of the envelope can be threaded after passing it around the vessel. The envelope is then inflated, e.g. by a syringe, to compress the vessel. A tap closes the inlet tube after inflation, and can be operated to partially deflate the envelope and so check for leaks of blood. The disclosure also includes a method of using the vascular clamp for occluding a blood vessel. |
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DETAILED DESCRIPTION I claim: 1.
A vascular clamp for occluding a single blood vessel or the like during surgery, comprising a flat elongated envelope of flexible fluid-impermeable sheet material which can be curved to embrace said blood vessel intended to be occluded by said vascular clamp, the envelope tapering from a narrow end towards a broader end with a fluid inlet tube at the broader end for inflation of the envelope to occlude said vessel embraced by said envelope, and having a strip of material extending transversely across the envelope at the broader end region and secured to the edges of the envelope to provide a slot between itself and the envelope through which the narrower end portion of the envelope can be threaded, a transverse seal being provided across the envelope intermediate its ends so that the narrower end portion is not inflated in use, the length of the uninflatable portion being greater than the length of the inflatable portion, and a region of foam material between said strip and said transverse seal and on the same side of the envelope as said strip, the envelope being formed with a distal lateral enlargement in the region of the transverse seal which enlargement can be deflected to allow the narrower end portion, including the distal enlargement to be threaded through said slot and which resiliently resumes its laterally projecting configuration when released, the envelope being formed from two superimposed layers of plastics film material peripherally sealed together, the peripheral seal between the layers following the outline of the distal enlargement so that the internal width of the envelope is locally wider in this region, the transverse seal being located within the distal enlargement.
2.
A vascular clamp according to claim 1 wherein the envelope is also formed with a proximal lateral enlargement in the region of the transverse strip, the peripheral seal between the layers following the outline of the proximal enlargement so that the internal width of the envelope is locally wider in this region, the transverse strip being welded at its ends to the envelope coincidentally with the peripheral seal
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