# US 12,108,975 B2 · Multifunctional high-frequency electric knife > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,108,975 B2 - Document ID: US12108975B2 - Status: Granted - Kind: B2 - Application number: 17/048,240 - Filed: 2019-04-19 - Published: 2021-03-18 - Granted: 2024-10-08 - Earliest claimed: 2018-04-23 - Assignees: Micro-Tech (Nanjing) Co., Ltd.; Sichuan Provincial People's Hospital - Applicants: Micro-Tech (Nanjing) Co., Ltd.; Sichuan Provincial People's Hospital - Inventors: Xiao Hu; Zhi Tang; Mingqiao Fan; Huan Xie; Changqing Li; Derong Leng - Web page: https://patentgrep.com/patent/US12108975B2 ## CPC - A61B 18/1445: {at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod} - A61B 18/1482: {having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy} - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61B 17/29: Forceps for use in minimally invasive surgery - A61B 2017/00269: {endoscopic mucosal resection EMR} - A61B 2018/00107: {Coatings on the energy applicator} - A61B 2018/00494: {Stomach, intestines or bowel} - A61B 2018/00601: {Cutting} - A61B 2018/00607: {Coagulation and cutting with the same instrument} - A61B 2018/0091: {Handpieces of the surgical instrument or device} - A61B 2018/1412: {Blade} - A61B 2018/1417: {Ball} - A61B 2018/1422: {Hook} - A61B 2018/1425: {Needle} - A61B 2018/1452: {including means for cutting (A61B2018/146 takes precedence)} - A61B 2018/1475: {Electrodes retractable in or deployable from a housing} - A61B 2218/002: Irrigation - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 2) The multifunctional high-frequency electrosurgical knife according to claim 2, wherein the protrusion has a cross section arranged radially. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 1) 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. ### Claim 8 (depends on 7) 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. ### Claim 9 (depends on 1) 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. ### Claim 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. ### Claim 11 (depends on 10) 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. ### Claim 12 (depends on 10) 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. ### Claim 13 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 a locking member is provided on an outer surface of the hollow tubular portion of the electrode, and a limit block is provided on an outer wall of the hollow tubular portion, wherein a maximum distance by which the electrode is protruded distally is controlled by cooperation of the limit block with the first pin shaft, and a minimum distance by which the electrode is protruded distally is controlled by cooperation of the locking member, the first clamping element, and the second clamping element. ### Claim 14 (depends on 13) The multifunctional high-frequency electrosurgical knife according to claim 13, wherein the locking member is block-shaped, ring-shaped, or tubular. ### Claim 15 (depends on 13) The multifunctional high-frequency electrosurgical knife according to claim 13, wherein the limit block is block-shaped or ring-shaped.