| 摘要 |
Retention bolsters for a percutaneous catheter which have a convexly curved exterior surface which contacts the epidermal surface of a patient, and which also provide protection against the catheter kinking. The retention bolsters slide over a catheter until contacting the skin of the patient at the catheter exit site. When secured in place, the bolsters rock along contacting portions between their convexly curved surface and the epidermal surface of the patient in response to movement of the catheter about the exit site, thereby alleviating the added pressure that would otherwise be applied by this movement. Upon the release of lateral pressure against the catheter device, the bolsters return to their original upright position. One bolster incorporates an elongated collar which is flexibly resilient to supportively allow the catheter to be laterally bent away from the exit site without kinking. A removable twist lock is placed around the collar portion of the bolster to securely lock the bolster to the catheter and can also be easily disengaged if the user desires to adjust the bolster or temporarily loosen it so that the surface underneath the bolster can be cleaned. A second bolster prevents kinking of the bolster by means of a curved passageway therein which orients the catheter toward a side exit which is substantially parallel to the skin surface. The side exit bolster also facilitates attachment by means of a slit therein which allows the bolster to be easily advanced over the catheter and pivoted into position thereon.
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