Multifunctional high-frequency electric knife

Patent metadata

Field	Value
Publication number	US-12108975-B2
Application number	US-201917048240-A
Country	US
Kind code	B2
Filing date	Apr 19, 2019
Priority date	Apr 23, 2018
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

Provided is a multifunctional high-frequency electric knife, comprising processing portion, sheath portion, and operating portion. The processing portion is provided with an electrode and a clip component; the electrode is provided with a hollow tubular portion; the electrode can be pushed out or retracted relative to far end of the sheath portion; the clip component can be pushed out or retracted relative to far end of the sheath portion; the sheath portion is disposed at near end of the processing portion and comprises a hollow pull rod and a spring tube; and the operating part is located at near end of the sheath portion and comprises a high-frequency joint connected to the electrode by wire, a component driving, by operating line, the electrode to move, a member driving the hollow pull rod to move, and a liquid inlet allowing liquid to flow to the hollow tubular portion of the electrode.

First claim

What is claimed is:

1. A multifunctional high-frequency electrosurgical knife, comprising:
a treatment part, a sheath part, and an operating part,
wherein the treatment part is located at a distal end of the multifunctional high-frequency electrosurgical knife and comprises: an electrode, configured to cut a tissue and inject a liquid, wherein the electrode is able to be pushed out or retracted relative to a distal end of the sheath part and the electrode has a hollow tubular portion extending in an axial direction; and a clip component, configured to perform hemostasis of a tissue, wherein the clip component is able to be pushed out or retracted relative to the distal end of the sheath part and the clip component comprises a first clamping element, a second clamping element, and a first pin shaft by which the first clamping element and the second clamping element are connected, wherein the clip component is able to be opened and closed by the first pin shaft being driven;
the sheath part is located at a proximal end of the treatment part and comprises: a hollow pull rod, wherein the electrode is able to extend distally from its proximal end through an interior of a proximal end of the hollow pull rod, the hollow pull rod is connected to the first clamping element and the second clamping element by means of the first pin shaft, and the hollow pull rod is operable to drive the clip component to be pushed out or retracted relative to the distal end of the sheath part; and an insulating outer tube, having a lumen extending along an axis of the sheath part, in which the hollow pull rod and the clip component are accommodated, wherein the sheath part further comprises a spring tube, which covers an outer layer of the hollow pull rod; and
the operating part is located at a proximal end of the sheath part and comprises: a high-frequency connector, connected to the electrode via a wire; a component, driving the electrode to move by means of an operating wire; a member, driving the hollow pull rod to move; and a liquid inlet, allowing a liquid to flow to the hollow tubular portion of the electrode.

2. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein a distal end of the electrode extends outwardly in a direction perpendicular to an axis of the hollow tubular portion by a length greater than a radius of a cross section of the hollow tubular portion of the electrode, and an outwardly extending portion forms a protrusion at the distal end of the electrode.

3. The multifunctional high-frequency electrosurgical knife according to claim 2 , wherein the protrusion has a cross section arranged radially.

4. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein an outer surface of a distal end of the hollow pull rod is covered with a fixed base, wherein the fixed base is connected to a distal end of the spring tube.

5. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein when the clip component is in an opened state, the first clamping element and the second clamping element intersect in a cross shape, and the first clamping element and the second clamping element are symmetrically shaped, so as to form a clip portion of the clip component.

6. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein the first clamping element and the second clamping element are coated with a coating film or ceramic material.

7. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein the operating part further comprises a core rod, which extends along an axial direction of the high-frequency electrosurgical knife, and a distal end of the core rod is connected to the insulating outer tube.

8. The multifunctional high-frequency electrosurgical knife according to claim 7 , wherein the member is a slider, wherein the slider is slidable back and forth along the core rod, so as to protrude or retract the clip component.

9. The multifunctional high-frequency electrosurgical knife according to claim 1 , wherein the component, driving the electrode to move, is a thumb ring provided at a proximal end of the operating part, wherein the thumb ring is slidable back and forth along the core rod, so as to protrude or retract the electrode.

10. A multifunctional high-frequency electrosurgical knife comprising:
a treatment part, a sheath part, and an operating part,
wherein the treatment part is located at a distal end of the multifunctional high-frequency electrosurgical knife and comprises: an electrode, configured to cut a tissue and inject a liquid, wherein the electrode is able to be pushed out or retracted relative to a distal end of the sheath part and the electrode has a hollow tubular portion extending in an axial direction; and a clip component configured to perform hemostasis of a tissue, wherein the clip component is able to be pushed out or retracted relative to the distal end of the sheath part and the clip component comprises a first clamping element, a second clamping element, and a first pin shaft by which the first clamping element and the second clamping element are connected, wherein the clip component is able to be opened and closed by the first pin shaft being driven;
the sheath part is located at a proximal end of the treatment part and comprises: a hollow pull rod, wherein the electrode is able to extend distally from its proximal end through an interior of a proximal end of the hollow pull rod, the hollow pull rod is connected to the first clamping element and the second clamping element by means of the first pin shaft, and the hollow pull rod is operable to drive the clip component to be pushed out or retracted relative to the distal end of the sheath part; and an insulating outer tube, having a lumen extending along an axis of the sheath part, in which the hollow pull rod and the clip component are accommodated; and
the operating part is located at a proximal end of the sheath part and comprises: a high-frequency connector, connected to the electrode via a wire; a component, driving the electrode to move by means of an operating wire; a member driving the hollow pull rod to move; and a liquid inlet, allowing a liquid to flow to the hollow tubular portion of the electrode; and
wherein the treatment part further comprises a second pin shaft, a third pin shaft, a fourth pin shaft, a first jaw arm, a second jaw arm, a third jaw arm, and a fourth jaw arm, wherein the hollow pull rod is movably connected to the third jaw arm and the fourth jaw arm by means of the first pin shaft, the third jaw arm and the first jaw arm are movably connected by the third pin shaft, the fourth jaw arm and the second jaw arm are movably connected by the fourth pin shaft, and the first jaw arm and the second jaw arm are movably connected to the hollow pull rod by means of the second pin shaft.

11. The multifunctional high-frequency electrosurgical knife according to claim 10 , wherein the first jaw arm and the third jaw arm, in a form of a hook structure, are movably connected, and the second jaw arm and the fourth jaw arm, in a form of a hook structure, are movably connected.

12. The multifunctional high-frequency electrosurgical knife according to claim 10 , wherein when the clip component is in an opened state, the first clamping element and the second clamping element intersect in a cross shape, and the first clamping element and the second clamping element are symmetrically shaped, so as to form a clip portion of the clip component.

13. A multifunctional high-frequency electrosurgical knife comprising:
a treatment part, a sheath part, and an operatin

Assignees

• Micro Tech Nanjing Co Ltd
• Sichuan Provincial Peoples Hospital

Inventors

• Hu Xiao
• Tang Zhi
• Fan Mingqiao
• Xie Huan
• Li Changqing
• Leng Derong

Classifications

• A61B2218/002

  Irrigation · CPC title

• A61B2018/1422

  Hook · CPC title

• A61B2018/1412

  Blade · CPC title

• A61B2018/0091

  Handpieces of the surgical instrument or device · CPC title

• A61B2018/00607

  Coagulation and cutting with the same instrument · CPC title