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HF-Chirurgie
Instruments

HF surgery

Electrosurgery, also known as electrosurgery, is a medical technique that uses high-frequency current to cut or coagulate tissue. This method allows for precise incisions with minimal bleeding and is used in various surgical specialties, from dermatology to general surgery.

  • Erbe foot switch for VIO C

    Original price $288.00 - Original price $554.00
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    Erbe

    Two variants: Single-pedal and dual-pedal foot control Precise control: Easy operation for surgical procedures Ergonomic design: Comfortable use o...

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    Original price $288.00 - Original price $554.00
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  • BOWA ARC 250 electrosurgical unit electrocautery

    Original price $12,380.00 - Original price $12,380.00
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    BOWA

    monopolar and bipolar instrument applicable in surgery, plastic surgery, ENT, gastroenterology, dermatology, urology and gynecology individuall...

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  • Erbe VIO® 100 C HF surgical unit

    Original price $3,709.00 - Original price $3,709.00
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    Erbe

    VIO® 100 C: Compact high-frequency surgical device Precise performance for microsurgical needles Max. Cut: 100 W, Max. Coag: 80 W AUTO START for c...

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  • B. Braun Aesculap bipolar connection cables for electrosurgical devices

    Original price $220.00 - Original price $322.00
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    B. Braun

    bipolar connection cables reusable for all bipolar instruments Scope of delivery: 1 piece

    Ready to ship: 1-2 working days
    Original price $220.00 - Original price $322.00
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  • B. Braun Aesculap Rose Gold non-stick bipolar forceps

    Original price $949.00 - Original price $1,417.00
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    B. Braun

    very good thermal and electrical conductivity good visibility of surgical field thanks to slim design fewer OP interruptions less cleaning of the ...

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    Original price $949.00 - Original price $1,417.00
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  • B. Braun Aesculap BiProtect Anti Collateral Damage Forceps

    Original price $1,390.00 - Original price $1,390.00
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    B. Braun

    ceramic insulated bipolar forceps Heat is concentrated on the inside and distal end of the forceps especially good when working in confined spa...

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    Ready to ship: 1-2 working days
    Original price $1,390.00 - Original price $1,390.00
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  • B. Braun Aesculap Disposable Goldtip Bipolar Forceps

    Original price $2,432.00 - Original price $2,432.00
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    B. Braun

    sterile disposable forceps Rose Gold Tip excellent non-stick behavior ready for immediate use different sizes (0.5 mm - 1.5 mm) Scope of del...

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    Ready to ship: 1-2 working days
    Original price $2,432.00 - Original price $2,432.00
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  • B. Braun Aesculap foot pedal switch for bipolar HF device GN060

    Original price $435.00 - Original price $435.00
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    B. Braun

    square single-pedal foot switch compatible with GN160 HF generator activates the device when operated easy handling high durability

    Ready to ship: 1-2 working days
    Original price $435.00 - Original price $435.00
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  • B. Braun Aesculap foot pedal switch for GN060 and GN160 HF generators

    Original price $1,347.00 - Original price $1,347.00
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    B. Braun

    round single pedal foot switch for HF generators GN160 and GN060 for activation of the device simple operation

    Ready to ship: 1-2 working days
    Original price $1,347.00 - Original price $1,347.00
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  • B. Braun bipolar microprocessor-controlled electrosurgical unit

    Original price $8,606.00 - Original price $8,606.00
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    B. Braun

    improved non-stick behavior realt-time monitoring and adjustment of coagulation parameters without negative influence on coagulation speed prevent...

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    Ready to ship: 1-2 working days
    Original price $8,606.00 - Original price $8,606.00
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  • B. Braun Aesculap Standard Coagulation Forceps

    Original price $292.00 - Original price $673.00
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    B. Braun

    bipolar coagulation forceps Standard version different sizes optionally straight or curved working ends bayonet-shaped, angled or straight

    Ready to ship: 1-2 working days
    Original price $292.00 - Original price $673.00
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  • B. Braun Aesculap YASARGIL coagulation forceps

    Original price $585.00 - Original price $801.00
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    B. Braun

    higher spring tension tips with finely worked surfaces also suitable for preparing and spreading tissue solid, yellow insulating layer finger...

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    Ready to ship: 1-2 working days
    Original price $585.00 - Original price $801.00
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  • B. Braun Aesculap ring coagulation forceps

    Original price $733.00 - Original price $733.00
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    B. Braun

    for tumor resection for glioma, meningioma and acoustic neurinoma Total length: 195 mm Diameter: 5 mm Working length: 75 mm

    Ready to ship: 1-2 working days
    Original price $733.00 - Original price $733.00
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  • B. Braun Aesculap Sintram coagulation forceps

    Original price $421.00 - Original price $751.00
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    B. Braun

    Sintram tip reduces tissue adhesion high conductivity longer cool on the electrodes optionally straight or curved tips

    Ready to ship: 1-2 working days
    Original price $421.00 - Original price $751.00
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  • B. Braun Aesculap CASPAR coagulation forceps

    Original price $724.00 - Original price $827.00
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    B. Braun

    slim, delicate design for fatigue-free, sensitive work Parallel guide - exact meeting of the tips Tips with rounded, polished surfaces Tweeze...

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    Ready to ship: 1-2 working days
    Original price $724.00 - Original price $827.00
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  • B. Braun Aesculap Pivot-Point bipolar forceps

    Original price $1,409.00 - Original price $1,409.00
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    B. Braun

    Pivot-Point for easier coagulation in depth opens the tips of the forceps again when additional pressure is applied to the closed forceps Yasar...

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    Ready to ship: 1-2 working days
    Original price $1,409.00 - Original price $1,409.00
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  • B. Braun Aesculap irrigation coagulation forceps

    Original price $1,051.00 - Original price $1,153.00
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    B. Braun

    Multifunctional instrument Washing out blood to visualize fine anatomical structures Coagulation without changing instruments gentle, without ...

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    Original price $1,051.00 - Original price $1,153.00
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  • B. Braun MINOP® Instruments

    Original price $256.00 - Original price $1,779.00
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    B. Braun

    multifunctional and modular neuroendoscopy system for intraventricular and endoscope-assisted neuroendoscopy wide range of instruments easy ha...

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    Original price $256.00 - Original price $1,779.00
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  • B. Braun MINOP® InVent Instruments

    Original price $520.00 - Original price $7,215.00
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    B. Braun

    intraventricular neuroendoscopy system larger trocar with oval working channel bi-instrumental working also angled instruments up to 32 instr...

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    Original price $520.00 - Original price $7,215.00
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What is HF surgery?

In high-frequency surgery, alternating current in combination with high frequency is guided through the body. Tissue is specifically damaged or cut. In contrast to a cut with a normal scalpel, the bleeding is also breastfed in HF surgery, since affected vessels can be closed equally.

 

Application techniques of HF surgery

Monopolar technology

Monopolar technology is the most frequently used technology. One of the poles (neutral electrode) of the high -frequency voltage source is connected to the patient via an area as large as possible. The surgical instrument is the other pole (active electrode). The electricity flows via the active electrode via the path of the lowest resistance to the neutral electrode. The power density is highest in the near future of the active electrode. The thermal effect is the most here. With the square of the distance, the electricity density also decreases. In order to prevent burns and keep the power density in the body low, the electrode should be as large as possible. Due to the large area of ​​the neutral electrode, the skin below is not noticeably heated. To prevent burns, the correct positioning of the neutral electrode is decisive.

 

Bipolar technology

In the case of bipolar application technology, the current only flows through the part of the body in which the surgical process (cut or coagulation) takes place. Two isolated electrodes are led directly to the area to be operated on. The HF voltage lies between the electrodes. The circuit is closed over the fabric in between. The thermal effect takes place in the tissue between the two electrodes. In contrast to the monopolar technology, the path of the current flow is exactly evident here. In addition, only about 20 - 30 % of the performance of monopolar technology is required. The surrounding tissue also remains undamaged and the measuring devices on the patient are not disturbed. The bipolar application technology is used particularly in critical, precise applications. These include micro, neuro and ENT surgery.

 

What is the frequency range in HF surgery?

In a frequency range between 300 kHz and 2000 kHz, HF surgery is used. To prevent Faradaysation (disturbing muscle twitching), the frequency range must be over 300 kHz. However, Faraday irritation can also arise in a company frequency. Therefore, capacitors (under 2500 Pf) are built into the circuit with a low capacity. However, muscle twitches cannot be completely excluded. The upper limit of 2000 kHz was determined to avoid hurtful burns on the patient.

 

HF generators and how they work

HF generators have a maximum output of 400 W. In a transistorized surgical winner, the oscillator controls the power amplifier over a driver level with a frequency of approx. 700 kHz. In the case of superficial coagulation, the oscillator is scanned with approx. 20 kHz and in a ratio of 1: 5. Two separate controllers set the operating voltage of the driver level and the cutting performance. The power amplifier has several parallel powered performance transistors that work in switching operation. This enables good efficiency. The secondary circuit of the power amplifier transformer leads to the connection of the electrode (active or neutral) via filter capacitors. The neutral electrode can either be grounded directly or capacitive or operated electrically. Thanks to the patient protection circuit, the generator only works with a connected N.Eutral electrode. An acoustic alarm indicates an interruption of the supply line.