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INT Medical MI Micropuncture Introducer Set

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INT Medical MI Micropuncture Introducer Set

INT Medical Cardiology Equipment

INT Medical MI Micropuncture Introducer Set

Product Code: CE-2739

Coaxial Microintroducer Sets in 4F and 5F, with Standard or Stiff Dilators and Echogenic or Plain 21G Needles

The INT Medical MI Micropuncture Introducer Set is a coaxial microintroducer range from INT Medical, designed to establish vascular access through a fine needle before upsizing. Featuring 4F and 5F sheaths at 7 cm and 10 cm, standard or stiff dilators, a 0.018-inch nitinol core guidewire, and a choice of echogenic or plain 21G needles at two lengths, it delivers small-calibre entry suited to ultrasound guidance. Available through Medigear.uk.

Sections

Interventional Consumables & Accessories

Categories

Cardiology Equipment

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

Micropuncture is a way of entering a vessel with as little metal as possible. Instead of an 18G needle and a 0.038-inch wire, the operator uses a 21G needle and a 0.018-inch wire, then advances a small coaxial sheath over it. Once inside, the inner dilator and fine wire come out, and a standard wire goes in, so the access is upsized rather than made large at the first attempt.

INT's range follows the established configuration for this technique closely. Sheaths come in 4F and 5F, lengths of 7 cm and 10 cm, and the guidewire is a 0.018-inch nitinol core at 45 cm. Comparable ranges offer 10 cm and 15 cm sheaths, so INT's 7 cm option is shorter than the norm, and its longest is shorter too. Two variables are then offered. Dilators come standard or stiff, and needles come at 4 cm or 7 cm with either an echogenic or a plain tip.

Those two choices produce 32 references, and the coding handles it neatly. Standard dilator codes run 01 to 08, and the matching stiff versions are the same number multiplied by ten, so MI4F05 and MI4F50 are the same set with a different dilator. The echogenic needle option deserves particular note, because it is a per-reference choice rather than a range-wide feature, so half the references carry a plain needle.

INT does not state the sheath dimensions, the guidewire tip shape, or any contraindications, all of which comparable sets publish. Medigear.uk will obtain them before supply.

Vascular access usually begins with a needle passed blindly or under ultrasound into an artery or vein. The conventional approach uses an 18G needle, which is large enough to take a 0.038-inch wire directly. Micropuncture takes a different route, entering with a 21G needle and a much finer wire, then building the tract up in stages.

The argument is about what happens when a pass fails. An 18G needle that enters the back wall of a vessel, or crosses a branch, leaves a hole that bleeds. A 21G needle leaves a considerably smaller one. That matters most where the consequences of a poor pass are greatest, in patients on anticoagulation, in vessels that are calcified or difficult to feel, and in access sites where bleeding would be hard to control. The published evidence is not unanimous. One retrospective cohort of nearly eighteen thousand patients found significantly fewer groin haematomas and fewer complications overall with the fine needle, while a smaller comparison found no measurable advantage.

Ultrasound guidance is where the technique now sits most comfortably, and it is why the echogenic needle option matters. A fine needle is hard to see on ultrasound, especially when approaching at a steep angle, and a tip treated to scatter sound is far easier to follow. One caution belongs alongside all of this. The fine wire that follows the needle can be diverted into a small side branch more readily than a stiffer J-tipped wire, and perforation has been described.

Handling the wire gently and confirming its course remains part of the technique.Medigear.uk supplies the instructions for use with every order.

Smaller Initial Puncture

A 21G entry leaves a considerably smaller hole than an 18G one, which matters most when a pass has to be repeated or a vessel is difficult.

Echogenic Needle Option

A tip treated to scatter ultrasound is much easier to follow on screen, which is the main practical difficulty in ultrasound-guided access.

Standard and Stiff Dilators Throughout

Both options exist across every size, length, and needle combination, so dilator support is chosen per case rather than fixed by the range.

Two Needle Lengths

21G needles at 4 cm and 7 cm cover superficial and deeper targets without changing the rest of the set.

Nitinol Core Guidewire

A 0.018-inch wire is easily kinked, and a nitinol core resists that better than stainless steel at the same diameter.

Reference Codes That Decode

Stiff versions carry the standard code multiplied by ten, so the relationship between paired references is visible in the number itself.

Occupies a Separate Niche in the Range

Unlike INT's three conventional introducer ranges, this one uses a different needle and wire class, so it complements rather than competes.

Consolidated Supply Through Medigear.uk

Medigear.uk quotes all 32 references on one account alongside INT's conventional access ranges.

4F Sheath References

Sixteen references at 4F across both lengths, both dilators and four-needle options.

5F Sheath References

Sixteen references at 5F across both lengths, both dilators and four-needle options.

10 cm Sheath Length

Coded 01 to 04 for standard dilators and 10 to 40 for stiff.

7 cm Sheath Length

Coded 05 to 08 for standard dilators and 50 to 80 for stiff.

Standard Dilator

The more forgiving option, supplied across every size and length.

Stiff Dilator

The supported option for scarred or calcified access sites.

21G Needle at 7 cm

The longer needle option, for deeper targets.

21G Needle at 4 cm

The shorter needle option, for superficial access.

Echogenic Needle Tip

Available on half the references, treated for ultrasound visibility.

Plain Seldinger Needle Tip

Available in the other half, for use without ultrasound guidance.

0.018 Inch Nitinol Guidewire

A 45 cm wire with a nitinol core, common to every reference.

Tapered Dilator and Sheath Transition

The junction is tapered to reduce resistance during advancement.

The INT Medical MI Micropuncture Introducer Set matches the established configuration for this technique closely, with 4F and 5F sheaths at two lengths, standard and stiff dilators, a 0.018-inch nitinol wire, and 21G needles in two lengths with or without an echogenic tip. Thirty-two references cover every combination, and the coding is the most readable in INT's catalogue. It also fills a real gap, since INT's other three introducer ranges all use conventional 18G entry, and this one does not. What the sheet omits is sheath dimensions, guidewire tip shape, and any statement of contraindications, where comparable sets specify that they are not for coronary or neurovascular use. Medigear.uk will obtain those, the sterility position, and UK conformity before offering this range.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

Gaining vascular access with a fine needle before enlarging the tract. The 21G needle and 0.018-inch wire make the initial entry; the 4F or 5F sheath follows, and access is then upsized to a standard wire. It is used where access is difficult or where a failed pass carries more consequence. Medigear.uk supplies the range to UK vascular and radiology services.

A smaller initial hole. A 21G needle makes a much smaller wound than an 18G one, so an unsuccessful pass is more forgiving. Evidence on whether that translates into fewer complications is mixed. One large cohort found significantly fewer groin haematomas with the micropuncture needle, while another comparison found no significant difference in access site complications.

Makes the needle visible on ultrasound. Comparable needles achieve this by dimpling the tip surface so it scatters sound back toward the probe. Under ultrasound guidance, the tip is otherwise difficult to see, particularly at steep angles. Note that echogenic is an option here rather than standard, so half the references carry a plain needle.

Support. A stiff dilator resists buckling as it is pushed through tissue, which helps in scarred or calcified access sites where a standard one may fold. A standard dilator is more forgiving and less likely to injure. Offering both across every combination lets a unit choose per case rather than stock one compromise.

Readably, which is unusual across INT's ranges. The digits after the French size run 01 to 08 for standard dilators, and the stiff equivalents are the same number multiplied by ten. MI5F03 and MI5F30 differ only in dilator stiffness. Within each block, 01 to 04 denote 10 cm sheaths and 05 to 08 denote 7 cm.

Not stated, and it is worth asking. INT credits the nitinol core with atraumatic insertion, and nitinol does resist kinking in a wire this fine. Published caution about micropuncture wires concerns tip shape rather than core material, since an angled tip can divert into a small branch where a J tip would not.

By technique rather than by size. INT's PathFinder, BIS, and thin wall ranges all use an 18G needle with a 0.038-inch wire, which is conventional access. This range uses a 21G needle with a 0.018-inch wire, which is micropuncture. It occupies a genuinely separate place in the catalogue rather than overlapping the others.

None of these is confirmed in the material supplied, and no contraindications are stated either. Comparable sets specify that they are not intended for coronary or neurovascular use. No CE or UKCA information is given. Medigear.uk will establish the position and obtain the instructions for use before supply.