Needle magnetizer
A device for accommodating and magnetizing a tissue-penetrating medical device of various lengths, with or without a cover covering a portion or the entirety of the tissue-penetrating medical device, is disclosed including a sleeve member having an open proximal end, a distal end, an inner surface, an outer surface having a graduated injection depth gauge to indicate needle penetration depth when the cover is placed into a magnetizer, and a hollow body extending between the proximal end and the distal end to form a protective closure over a shaft of a tissue-penetrating medical device. A device having one or more magnetizing elements sectioned into a plurality of movable segments pivoting around an axis to accommodate needles with different lengths is also disclosed. Also disclosed is a device having one or more magnetizing means mounted on a movable element to magnetize needles of various lengths.
1. A magnetizer for magnetizing a tissue-penetrating medical device comprising:
an open proximal end;
a distal end;
a first sidewall;
a first sliding element having one or more first magnets slidably connected to the first sidewall;
a second sidewall;
a cavity formed between the first sidewall, second sidewall and the distal end;
the first sidewall having a first slot, the first sliding element being slidably connected to the first slot;
the second sidewall having a second slot, a second sliding element having one or more second magnets, the second sliding element being slidably engaged to the second slot; and
wherein movement of the first sliding element and the second sliding element is parallel to a direction of movement a user would employ to insert a tissue-penetrating medical device or a needle cover into the cavity to adjust a length of the magnetizer to magnetize the tissue-penetrating medical device or the needle cover of various lengths that are inserted into the cavity.
2. The magnetizer of claim 1 , wherein the one or more first magnets are mounted on the first sliding element.
3. The magnetizer of claim 1 , wherein the first sliding element includes a contact surface having a profile for accommodating a practitioner's finger.
4. The magnetizer of claim 1 , wherein the second sliding element includes a contact surface having a profile for accommodating a practitioner's finger.
5. The magnetizer of claim 1 , wherein the cavity is configured to accommodate the tissue-penetrating medical device.
6. The magnetizer of claim 5 , wherein the tissue-penetrating medical device is a needle assembly, a stylet, catheter, introducer needle, scalpel or guidewire.
7. The magnetizer of claim 6 , wherein the tissue-penetrating medical device includes a needle assembly including a needle having a shaft, and when the shaft is magnetized, the tissue-penetrating medical device is configured for use in a procedural guidance system to locate and project a position of the shaft during an invasive medical procedure.
8. The magnetizer of claim 1 , wherein the cavity is configured to accommodate the needle cover.
9. The magnetizer of claim 1 , wherein the one or more first magnets comprises a fixed permanent magnet.
10. The magnetizer of claim 1 , wherein the first sliding element is moveable along the first sidewall.
11. The magnetizer of claim 1 , wherein the second sliding element is moveable along the second sidewall.