Guidewire for catheter insertion
First Claim
1. A guidewire for insertion into a needle during a medical procedure, the guidewire comprising:
- a patient-side portion having a first diameter less than an inner diameter of the needle;
a doctor-side portion having a second diameter less than the inner diameter of the needle; and
an intermediary portion, interposed between the patient-side portion and the doctor-side portion, having a diameter greater than the inner diameter of the needle and greater than the first diameter of the patient-side portion such that the intermediary portion does not advance into the needle during the medical procedure when a medical professional pushes axially on the doctor-side portion.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention is directed to a guidewire configured to reduce the incidence of medical accidents when using guidewires including, but not limited to, the incidence of guidewires accidentally being pushed completely into a patient through a needle in the patient, guidewires accidently being left inside patients after the placement of central venous (and other) catheters, and guidewires accidently being left inside patients after removal of the catheter (at the end of an operation of other medical procedure). In particular, an intermediary portion (either in the form of a new shape (referred to herein as “an obstruction portion”) or an alternate (e.g., more flexible) material) of the guidewire inhibits further advancement into the needle with pushing motion. (The intermediary portion can be implemented as an additional portion connected between the patient-side portion and the doctor-side portion of the guidewire as well.)
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Citations
34 Claims
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1. A guidewire for insertion into a needle during a medical procedure, the guidewire comprising:
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a patient-side portion having a first diameter less than an inner diameter of the needle; a doctor-side portion having a second diameter less than the inner diameter of the needle; and an intermediary portion, interposed between the patient-side portion and the doctor-side portion, having a diameter greater than the inner diameter of the needle and greater than the first diameter of the patient-side portion such that the intermediary portion does not advance into the needle during the medical procedure when a medical professional pushes axially on the doctor-side portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16, 17, 18, 19, 20, 22, 23, 30)
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13. A guidewire for insertion into a needle during a medical procedure, the guidewire comprising:
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a patient-side portion; a doctor-side portion; and an intermediary portion interposed between the patient-side portion and the doctor-side portion having a material having sufficiently less rigidity in the axial direction of the guidewire than the patient-side portion such that the intermediary portion does not advance into the needle during the medical procedure when a medical professional pushes axially on the doctor-side portion. - View Dependent Claims (14, 15, 21, 31)
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24. A catheter system comprising:
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a needle having a first inner diameter; a catheter having a second inner diameter; and a guidewire for insertion into the needle and the catheter during a medical procedure, the guidewire comprising; a patient-side portion having a first diameter less than the first inner diameter of the needle and less than the second inner diameter of the catheter; a doctor-side portion having a second diameter less than the first inner diameter of the needle and less than the second inner diameter of the catheter; and an intermediary portion, interposed between the patient-side portion and the doctor-side portion, having a diameter greater than the first inner diameter of the needle and greater than the first diameter of the patient-side portion such that the intermediary portion does not advance into the needle during the medical procedure when a medical professional pushes axially on the doctor-side portion. - View Dependent Claims (25, 26, 27, 28, 29, 32)
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33. A catheter system comprising:
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a needle having a first inner diameter; a catheter having a second inner diameter; and a guidewire for insertion into the needle and the catheter during a medical procedure, the guidewire comprising; a patient-side portion having a first diameter less than the first inner diameter of the needle and less than the second inner diameter of the catheter; a doctor-side portion having a second diameter less than the first inner diameter of the needle and less than the second inner diameter of the catheter; and an intermediary portion interposed between the patient-side portion and the doctor-side portion having a material having sufficiently less rigidity in the axial direction of the guidewire than the patient-side portion such that the intermediary portion does not advance into the needle during the medical procedure when a medical professional pushes axially on the doctor-side portion. - View Dependent Claims (34)
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Specification