Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1995-07-21
1998-06-30
Nicholson, Eric K.
Pipe joints or couplings
Nonmetal to metal
Internal member
285242, 604 8, 29508, F16L 3320
Patent
active
057722617
ABSTRACT:
A method for securing the connection of a medical tube to a port of a fluid transfer instrument. The method provides connections with superior resistance to unexpected disconnection, and thus is particularly beneficial for joining elastic tubes which are implanted within the body for conducting body fluid from one internal location to another or between the body and an external location. The novel method includes inserting a rigid nipple on the port into the lumen of an elastically deformable tube to be joined to the port, placing an initially loose fitting, nonelastically deformable sleeve around the tube on the nipple, and deforming the sleeve radially toward the nipple to clamp the tube between the sleeve and nipple. The extent of deformation is controlled to prevent damaging the tube.
A tool for clamping the sleeve to a controlled extent of deformation is also provided. The invention further provides novel medical tube couplings which include nonelastically deformable sleeves for clamping a tube to a nipple. The novel couplings are incorporated in medical tube connectors for splicing together tubes. The method and articles of this invention are preferably useful in ventriculoperitoneal shunt procedures. A shunt tube connector has been discovered which obviates the need to tie an intradural ligature around a tube joint of a proximal catheter for draining cerebrospinal fluid from a ventricle of the brain. Medical tube couplings of this invention are preferably made of titanium containing metal to provide radio-opacity without interfering with magnetic resonance imaging.
REFERENCES:
patent: 1119437 (1914-12-01), Lautz
patent: 2319024 (1943-05-01), Wehringer
patent: 2341003 (1944-02-01), Watson
patent: 3484121 (1969-12-01), Quinton
patent: 3859837 (1975-01-01), Burrough
patent: 4635972 (1987-01-01), Lyall
patent: 4690435 (1987-09-01), Manning et al.
patent: 4726612 (1988-02-01), Picton
patent: 4790832 (1988-12-01), Lopez
patent: 4804212 (1989-02-01), Vyse
patent: 4876788 (1989-10-01), Steer et al.
patent: 4880414 (1989-11-01), Whipple
patent: 4969879 (1990-11-01), Lichte
patent: 5042974 (1991-08-01), Agarwal
patent: 5171046 (1992-12-01), Iwata et al.
patent: 5176622 (1993-01-01), Watson
patent: 5199751 (1993-04-01), Beagle et al.
patent: 5304114 (1994-04-01), Cosman et al.
patent: 5312337 (1994-05-01), Flaherty
patent: 5385541 (1995-01-01), Kirsch et al.
patent: 5387188 (1995-02-01), Watson
patent: 5405339 (1995-04-01), Konnen
Connectors for Neurosurgical Use, Heyer Schulte pamphlet 100681-002-04-779 CSF-Flow Control Shunts, Pudenz-Schulte Medical pamphlet 10158-2, Feb. 1990, pp. 27-47.
Ebrahim, N.A., Coombs, R.E., Jackson, T. & Zeiss, J. The Effect of Metallic Implants on Magnetic Resonance Imaging, The Journal of Bone and Joint Surgery, 73-A, No. 9, pp. 1397-1398, (Oct. 1991).
Ebrahim, N.A., Salvolaine, E.R., Zeiss, J., & Jackson, T., Titanium Hip Implants for Improved Magnetic Resonance and Computed Tomography Examinations, Clinical Orthopaedics and Related Research, No. 275, pp. 194-198, (Feb. 1992).
Rupp, R., Ebrahim, N.A., Salvolaine, E.R., & Jackson, T., Magnetic Resonance Imaging Evaluation of the Spine With Metal Implants: General Safety and Superior Imaging with Titanium, Spine, 18 No. 3, pp. 379-385 (1993).
Salvolaine, E. R., Ebrahim, N.A., Andreshak, T.G., & Jackson, T., Anterior and Posterior Cervical Spine Fixation Using Titanium Implants to Facilitate Magnetic Resonance Imaging EvaluationJournal of Orthopaedic Trauma, 3, No. 4, pp. 295-299, 1989.
Shellock, F. G., MR Imaging of Metallic Implants and Materials: A Compilation of the Literature, AJR 151 pp. 811-814, (1988).
de Andino J. Michael Martinez
Lew Jeffrey C.
Nicholson Eric K.
The Nemours Foundation
LandOfFree
Cannula connector and method of connecting medical tubes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cannula connector and method of connecting medical tubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cannula connector and method of connecting medical tubes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851961