CN113509215A - Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system - Google Patents
Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system Download PDFInfo
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- CN113509215A CN113509215A CN202110511849.5A CN202110511849A CN113509215A CN 113509215 A CN113509215 A CN 113509215A CN 202110511849 A CN202110511849 A CN 202110511849A CN 113509215 A CN113509215 A CN 113509215A
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- interface
- biopsy needle
- cutting
- electrotomy
- puncture tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
- A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0041—Detection of breast cancer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00333—Breast
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1425—Needle
Abstract
The invention discloses an electrotomy biopsy needle, an electrotomy biopsy needle set and a vacuum-assisted breast biopsy system, wherein the electrotomy biopsy needle comprises: the puncture assembly comprises a puncture tube, and a sampling groove is formed in the tube wall of the puncture tube close to the front end; the cutting piece assembly comprises a cutting piece, the cutting piece penetrates through the puncture tube and can rotate or rotate relative to the puncture tube and axially reciprocate back and forth, and the cutting piece comprises a cutting piece main body and at least one cutting edge; the cutting part main body is insulated, the cutting edge is conductive to form a first electrode, and the puncture tube is conductive to form a second electrode; the puncture device further comprises a first interface and a second interface, wherein the first interface and the second interface are respectively and electrically connected with the cutting edge and the puncture tube. The electrotomy biopsy needle with the structure cuts the tissue by utilizing the radio wave between the cutting edge and the puncture tube, and has the advantages of high safety, convenient operation, simple structure and low cost.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an electrotomy biopsy needle, an electrotomy biopsy needle kit and a vacuum-assisted breast biopsy system.
Background
A vacuum assisted breast biopsy system is a medical instrument used for minimally invasive treatment or biopsy of breast tumors. The vacuum assisted breast biopsy system mainly comprises a main machine, a biopsy operation device and a vacuum negative pressure system. The system is mainly characterized in that under the guidance of an imaging device (such as B-ultrasonic), a biopsy needle of a biopsy operation device is punctured to the position of an operation point, then the biopsy needle is partially or completely rotary cut the lesion tissue in a mechanical movement mode through electric control, and finally, a rotary cut tissue specimen is conveyed to the outside through negative pressure so as to be used for sheet making treatment and pathological detection analysis and diagnosis.
Currently, the rotary-cut blade of a biopsy surgical device has poor durability to calcifications, and may cause bleeding during rotary-cut, and the rotary-cut tissue cavity after the operation needs long-term compression hemostasis, and may cause hematoma during recovery. In order to solve this problem, an electrotomy biopsy surgical device has been proposed in the prior art, which replaces the cutting edge portion of the cutting member with a surgical electrode, and high-frequency current is conducted to the lesion tissue to be cut through the cutting edge of the cutting blade tube, while cutting the tissue and stopping bleeding. However, in the operation of the electric excision biopsy surgical device, a metal plate with a large area is also required to be contacted with the hip or thigh of a patient to be used as a neutral electrode. If the neutral electrode is not well attached to the skin of a human body and the contact is poor, high energy can be generated locally, scalding is easy to occur, and the safety is poor; moreover, the metal plate is bulky, heavy and inconvenient to operate.
Disclosure of Invention
In view of the above-mentioned prior art, the present invention provides an electrosurgical biopsy needle having high safety and simple operation. Another object of the present invention is to provide an electric excision biopsy needle set having the electric excision biopsy needle and a vacuum assisted breast biopsy system having the electric excision biopsy needle set.
In order to solve the above technical problem, the present invention provides an electrotomy biopsy needle, comprising: the puncture tube assembly comprises a puncture tube, the puncture tube is provided with a front end and a rear end, and a sampling groove is formed in the tube wall of the puncture tube; a cutting assembly including a cutting member; the cutting piece can rotate or rotate relative to the puncture tube and axially reciprocate back and forth, and comprises a cutting piece body and at least one cutting edge which is arranged at the front end of the cutting piece body and extends along the axial direction; the cutting piece main body is insulated, the cutting edge is conductive to form a first electrode, and the puncture tube is conductive to form a second electrode; the puncture tube is characterized by further comprising a first interface and a second interface, wherein the first interface and the second interface are respectively electrically connected with the cutting edge and the puncture tube, any one of the first interface and the second interface is used for being directly or indirectly connected with a high-frequency output end of a host, and the other interface is used for being directly or indirectly connected with a high-frequency input end of the host.
Compared with the traditional rotary cutting type electrotomy biopsy needle, the electrotomy biopsy needle can more effectively crush calcific foci, has the function of wound coagulation due to the influence of heat effect, and effectively avoids the risks of hemorrhage in the operation and hematoma after the operation. Compared with the existing electrotomy biopsy needle, the electrotomy biopsy needle provided by the invention has the advantages that the puncture tube is used as one electrode, the cutting edge of the cutting part is used as the other electrode, and radio waves between the cutting edge and the puncture tube are utilized for cutting, so that the action range of high-frequency electric energy is limited between the two electrodes, the damage degree and the influence range to organism tissues are far smaller than those of a single-pole mode, and in addition, an additional metal plate is not needed in the working process, the phenomenon that a human body is burnt due to poor adhesion between the metal plate and the skin of the human body can be avoided, the safety is high, and the operation is convenient. In addition, the electric excision biopsy needle has simple structure and low cost.
In one embodiment, the cutting edge is linear or helical extending in the axial direction of the cutting member.
In one embodiment, the cutting edge is formed by a wire or the cutting edge is an axially extending metal sheet.
In one embodiment, a cutter head portion is provided on the front end of the cutter body, and the cutting edge is fixed to an end surface of one or both ends of the cutter head portion in the rotation direction of the cutter.
In one embodiment, the head portion is a tile extending circumferentially about a central axis of the cutting element.
In one embodiment, the blade portion is formed by axially cutting away a portion of the front end of the cutter body.
In one embodiment, the cutter head portion is provided with a vent.
In one embodiment, the cutting device comprises more than two cutting edges, one ends of the more than two cutting edges are connected through a connecting section, and the other ends of the more than two cutting edges are connected with the cutting piece main body.
In one embodiment, the cutting element body includes a metal tube and an insulating layer covering the surface of the metal tube, and the metal tube is electrically connected to the cutting edge and the first interface.
In one embodiment, the cutting element body is made of an insulating material, at least one connecting wire is arranged in the tube wall of the cutting element body, one end of the connecting wire is electrically connected with the cutting edge, and the other end of the connecting wire is electrically connected with the first interface.
In one embodiment, the puncture assembly further comprises a tubular housing, the rear end of the puncture tube is inserted and fixed in the front end of the housing, the rear end of the cutting element extends out of the puncture tube and into the housing, a push rod is fixedly sleeved on the cutting element extending into the housing, a first gear is in threaded fit with the push rod, and the puncture assembly further comprises a rotation stopping mechanism for limiting the cutting element to rotate relative to the puncture tube.
The invention provides an electrotomy biopsy needle kit, which comprises a handle, wherein the handle comprises a shell and a circuit board arranged in the shell, and further comprises an electrotomy biopsy needle, the handle further comprises a third interface and a fourth interface which are respectively matched with the first interface and the second interface, the third interface and the fourth interface are electrically connected with the circuit board, the electrotomy biopsy needle is connected with the shell, and the first interface and the second interface are respectively electrically connected with the third interface and the fourth interface.
The invention provides an electrotomy biopsy needle kit, which comprises a handle and an electrotomy biopsy needle, wherein the handle comprises a shell, and the electrotomy biopsy needle is connected with the shell.
The invention provides a vacuum assisted breast biopsy system, comprising: the electric cutting biopsy needle set; and a main unit including a high frequency transmitting module for generating a high frequency, the high frequency transmitting module having a high frequency output terminal and the high frequency input terminal, the high frequency output terminal and the high frequency input terminal being connected to the circuit board through a cable so as to be indirectly connected to the first interface and the second interface, or the high frequency output terminal and the high frequency input terminal being directly connected to the first interface and the second interface through a cable.
The advantageous effects of the additional features of the present invention will be explained in the detailed description section of the present specification.
Drawings
FIG. 1 is a cross-sectional view of an electrotomy biopsy needle assembly according to a first embodiment of the present invention;
FIG. 2 is an exploded view of the electrosurgical biopsy needle assembly shown in FIG. 1;
FIG. 3 is a perspective view of the piercing assembly of the electrosurgical biopsy needle assembly shown in FIG. 1;
FIG. 4 is a perspective view of a cutting assembly of the electrosurgical biopsy needle assembly shown in FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a diagram showing the relationship between the cutting edge and the sampling groove;
FIG. 7 is a schematic perspective view of another cutting edge configuration;
FIG. 8 is a schematic view of a vacuum assisted breast biopsy system having the electrotomy biopsy needle assembly of FIG. 1;
FIG. 9 is a perspective view of an electrosurgical biopsy needle assembly according to a second embodiment of the present invention;
FIG. 10 is a schematic view of a vacuum assisted breast biopsy system having the electrotomy biopsy needle assembly of FIG. 9.
Description of reference numerals: 100. an electrosurgical biopsy needle; 110. a puncture assembly; 112. a puncture tube; 112a, a sampling groove; 112b, a tip; 114. a housing; 120. a cutting assembly; 122. cutting the piece; 122a, a cutter body; 122b, cutting edges; 122c, a vent; 122d, a cutter head part; 122e, a foot; 122f, a connecting section; 130. a first gear; 131. a threaded hole; 140. a shaft sleeve; 142. a limiting bulge; 150. a collection box; 162. a first interface; 164. a second interface; 200. a handle; 210. a housing; 212. a card slot; 214. A motor; 216. a second gear; 217. a third interface; 218. a fourth interface; 300. a host; 410. a first cable; 420. a second cable; 430. a third cable; 500. a vacuum tube.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
Fig. 1 is a sectional view of an electric excision biopsy needle set according to a first embodiment of the present invention, and fig. 2 is an exploded structural view of the electric excision biopsy needle set shown in fig. 1. As shown in fig. 1 and 2, the needle assembly for electric excision biopsy according to the first embodiment of the present invention comprises an electric excision biopsy needle 100 and a handle 200, wherein the electric excision biopsy needle 100 mainly comprises a puncture assembly 110 and a cutting assembly 120.
As shown in fig. 3, the puncture assembly 110 includes a puncture tube 112 and a housing 114, the puncture tube 112 has a front end far from the housing 114 and a rear end near the housing 114, the front end of the puncture tube 112 is provided with a tip 112b, and the tip 112b punctures tissue with the aid of an ultrasound imaging or X-ray imaging device. A sampling groove 112a is provided in the wall of the puncture tube 112 near the front end, and the rear end of the puncture tube 112 is inserted into and fixed to the housing 114. In this embodiment, the puncture tube 112 is made of an electrically conductive material (e.g., stainless steel, etc.) to form the second electrode.
As shown in fig. 4 and 5, the cutting assembly 120 includes a cutting element 122, the cutting element 122 is mounted in the puncture tube 112 and can perform a rotational motion (or a rotational motion and an axial reciprocating motion back and forth) along the puncture tube 112, the cutting element 122 includes an insulating cutting element body 122a, the cutting element body 122a is tubular, or a sheet, or a thin rod, the cutting element 122 further includes a cutting edge 122b disposed on a front end of the cutting element body 122a, and the cutting edge 122b is made of a conductive material to form a first electrode. The resected biopsy needle 100 further comprises a first port 162 and a second port 164, wherein the first port 162 and the second port 164 are electrically connected to the cutting edge 122b and the puncture tube 112, respectively, either one of the first port 162 and the second port 164 is used for directly or indirectly connecting to the high-frequency output terminal of the main unit 300, and the other one of the first port 162 and the second port 164 is used for directly or indirectly connecting to the high-frequency input terminal of the main unit 300. If the first port 162 is connected to the high frequency output terminal and the second port 164 is connected to the high frequency input terminal, the cutting edge 122b forms an emitter and the puncture tube 112 forms a receiver, whereas if the first port 162 is connected to the high frequency input terminal and the second port 164 is connected to the high frequency output terminal, the cutting edge 122b forms a receiver and the puncture tube 112 forms an emitter. The cutting edge 122b, the puncture tube 112, the first port 162, and the second port 164 form a circuit to conduct high frequency energy.
As shown in fig. 6, when a high frequency wave is inputted from the first port 162 or the second port 164, a high frequency radio wave is generated between the cutting edge 122b and the edge of the sampling groove 112a of the puncture tube 112, and when the high frequency radio wave passes through the tissue in the sampling groove 112a, water molecules in the tissue itself are instantaneously rapidly oscillated due to the resistance of the tissue to the radio wave, and water molecules in the cell are evaporated to destroy the cell or volatilize the cell. When high-frequency electric waves encounter water molecules in cells, the resistance of the water molecules to the electric waves enables the energy of the electric waves to be converted into mechanical energy, the water molecules are caused to oscillate fiercely instantly, the water molecules in the cells are converted into gaseous water instantly from liquid water, and the cells are broken under the condition of expansion of the volume of the water molecules to form tissue separation and realize cutting; and the heat effect is utilized to denature the local cell coagulation protein of the soft tissue so as to achieve effective hemostasis.
Compared with the traditional rotary cutting type electrotomy biopsy needle, the electrotomy biopsy needle 100 can more effectively crush calcific foci, can play a role in traumatic coagulation due to the influence of heat effect, and effectively avoids the risks of hemorrhage in the operation and hematoma after the operation. Compared with the existing electrotomy biopsy needle, the electrotomy biopsy needle 100 provided by the invention has the puncture tube 112 as one pole, the cutting edge 122b of the cutting piece 122 as the other pole, and the radio wave between the cutting edge 122b and the puncture tube 112 is utilized for cutting, so that no additional metal plate is needed during working, the human body can be prevented from being burnt due to poor adhesion of the metal plate and the skin of the human body, the safety is high, and the operation is convenient. In addition, the product has simple structure and low cost.
Referring further to fig. 5, the cutting edge 122b in the present embodiment is a straight line (or a spiral) extending along the axial direction of the cutting member 122, and the cutting edge 122b in the present embodiment is formed by bending a metal wire (e.g., stainless steel wire, tungsten wire, etc.). The front end of the cutting element main body 122a is provided with a nose portion 122d, and the cutting edge 122b is fixed on the end surface of one end (or two ends) of the nose portion 122d along the rotation direction of the cutting element. Preferably, the head portion 122d is formed in a tile shape extending in a circumferential direction around a central axis of the cutter 122, so that the cut tissue is guided into the cutter body 122a through the head portion 122 d. Further preferably, the knife head 122d is formed by cutting off a part of the front end of the cutter body 122a along the axial direction, so that the knife head 122d and the cutter body 122a are of an integral structure and have a simple structure. Preferably, at least one vent 122c is formed on a side wall of the front end of the cutter head portion 122d, and the vent 122c facilitates air circulation and pressure relief.
As shown in FIG. 6, the cutting edge 122b has a length greater than that of the sampling groove in the axial direction of the cutting member 122, so that the cutting member 122 makes one rotation to cut the tissue inserted into the sampling groove. Of course, the length of the cutting edge 122b may be smaller than that of the sampling groove, so that the cutting member 122 is moved forward in the axial direction while rotating in operation, and complete cutting of the tissue extending into the sampling groove can be achieved as well.
Fig. 7 is a schematic perspective view of another cutting edge 122 b. As shown, two (or more than two) cutting edges 122b are included, one end of the two cutting edges 122b is connected by a connecting section 122e, and the other end is connected with the cutting member main body 122 a.
Alternatively, the cutting edge 122b is an axially extending metal sheet.
In this embodiment, the cutting body 122a includes a metal (e.g., stainless steel) tube (not shown) and an insulating layer (not shown) covering the surface of the tube, and the tube is electrically connected to the cutting edge 122b and the first connector 162. Preferably, the cutting edge 122b is welded to the front end of the tube body. Alternatively, the cutting element main body 122a is made of an insulating material (ceramic material, hard plastic), the cutting edge 122b is fixed on the end surface of the tool bit portion 122d, and at least one connecting wire (not shown) is disposed in the tube wall of the cutting element main body 122a, one end of the connecting wire is electrically connected to the cutting edge 122b, and the other end of the connecting wire is electrically connected to the first connector 162. Preferably, the cutting edge 122b and the connecting wire are of a unitary structure.
As shown in fig. 1 and 2, the first interface 162 in this embodiment includes a first pin, and the second interface 164 includes a second pin. First contact pin and cutting blade can pass through wire electric connection, perhaps, cutting member main part 122a includes the body of metal and the cladding at the insulating layer on body surface, does not coat insulating coating in the position that is close to first contact pin of body, and electric connection is realized in the inner body contact of first contact pin, and the front end and the cutting blade electric connection of body to realize first contact pin and cutting blade electric connection. The inner end of the second pin is electrically connected to the puncture tube 112 via a wire (not shown). The outer ends of the first and second pins are exposed from the housing 114.
As shown in FIG. 4, the electrosurgical biopsy needle 100 further includes a transmission mechanism for driving the cutting member 122 to rotate, the first gear 130 is fixed on the cutting member 122, and the first gear 130 is engaged with the second gear 216 to drive the cutting member 122 to rotate. When the cutting member 122 needs to be rotated while being moved axially forward to cut the tissue, reference may be made to the transmission mechanism of patent CN 206745383U.
The electrotomy biopsy needle 100 in this embodiment further comprises a collection cassette 150, the inlet of the collection cassette 150 is connected to the rear end of the cutting member 122, and the severed tissue passes through the cutting member 122 into the collection cassette 150.
As shown in fig. 1 and 2, the handle 200 includes a housing 210, a driving device, a circuit board, a first cable 410, a third interface 217 and a fourth interface 218, one side of the housing 210 is provided with a card slot 212 for accommodating the shell 114 of the biopsy needle, the driving device is accommodated in the housing 210, the driving device includes a motor 214 and a second gear 216, the second gear 216 is mounted on an output shaft of the motor 214, and the second gear 216 is partially exposed out of the housing 210 and meshed with the first gear 130. The circuit board connects the motor 214, the first cable 410, the third interface 217, and the fourth interface 218. In this embodiment, the first output interface is a first jack matched with the first pin, and the second output interface is a second jack matched with the second pin. When the electrosurgical biopsy needle 100 is mounted in the pocket 212, the first and second insertion pins are inserted into the first and second receptacles, respectively.
Fig. 8 is a schematic structural diagram of a vacuum assisted breast biopsy system having an electrotomy biopsy needle assembly according to the above embodiment. As shown in the figure, the vacuum assisted breast biopsy system of the present invention comprises the resected biopsy needle set and the main machine 300 in the above embodiment, a high frequency emitting module (not shown in the figure) and a vacuum generating system (not shown in the figure) are arranged in the main machine 300, and the first cable 410 at the high frequency output end and the high frequency input end of the high frequency emitting module is connected with the circuit board in the handle 200.
The working process of the vacuum assisted breast biopsy system in the embodiment of the invention is as follows:
the user firstly punctures the front end of the puncture tube 112 to the position of an operation point under the guidance of the ultrasonic device, the knife head part 122d of the cutting part is positioned at the position of a sampling groove of the puncture tube at the moment, the sampling groove is in a closed state, a control signal is sent through a control button on the handle 200, the circuit board controls the motor 214 to start working, negative pressure is started, the second gear 216 and the first gear 130 are matched to drive the cutting part 122 of the electrotomy biopsy needle 100 to do rotary motion, namely, the knife head part 122d rotates, the sampling groove is opened, and a tissue sample is sucked into the sampling groove;
the sampling is started by sending a control signal through a handle button, or the sampling is started by software automatic control, the cutting member 122 of the resected biopsy needle 100 is driven to continue to rotate or rotate in the opposite direction by matching the second gear 216 and the first gear 130, the cutting edge 122b is rotated, meanwhile, the host 300 outputs high-frequency electric waves, the high-frequency electric waves are transmitted to the cutting edge 122b through the first cable 410, the circuit board, the third interface 217 and the first interface 162, high-frequency radio waves are generated between the cutting edge 122b and the puncture tube 112, the focal tissues are partially or completely cut through the radio waves, and then the focal tissues are transmitted into the collection box 150, so that the slide making processing and pathological detection analysis diagnosis are performed. On one hand, a pathological tissue specimen can be micro-traumatized and taken out to make accurate pathological diagnosis; on the other hand, the minimally invasive surgical excision can be carried out on the focus.
Fig. 9 is a schematic perspective view of an electrotomy biopsy needle assembly according to a second embodiment of the present invention, and fig. 10 is a schematic structural view of a vacuum assisted breast biopsy system having the electrotomy biopsy needle assembly shown in fig. 9. The structure of the electric excision biopsy needle assembly in this embodiment is substantially the same as that of the electric excision biopsy needle assembly in this embodiment, except that the high-frequency circuit of the electric excision biopsy needle 100 is directly connected to the main unit 300, i.e. the first port 162 and the second port 164 of the puncture assembly 110 are disposed on the side opposite to the handle 200, and the main unit 300 is connected to the circuit board of the handle 200 through the second cable 420 and is electrically connected to the first port 162 and the second port 164 through the third cable 430.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (13)
1. An electrosurgical biopsy needle comprising:
the puncture tube assembly comprises a puncture tube, the puncture tube is provided with a front end and a rear end, and a sampling groove is formed in the tube wall of the puncture tube;
a cutting assembly including a cutting member;
the cutting piece can rotate or rotate relative to the puncture tube and axially reciprocate back and forth, and comprises a cutting piece body and at least one cutting edge which is arranged at the front end of the cutting piece body and extends along the axial direction;
the cutting piece main body is insulated, the cutting edge is conductive to form a first electrode, and the puncture tube is conductive to form a second electrode; the puncture tube is characterized by further comprising a first interface and a second interface, wherein the first interface and the second interface are respectively electrically connected with the cutting edge and the puncture tube, any one of the first interface and the second interface is used for being directly or indirectly connected with a high-frequency output end of a host, and the other interface is used for being directly or indirectly connected with a high-frequency input end of the host.
2. The electrotomy biopsy needle according to claim 1, wherein the cutting edge is linear or helical extending along the axial direction of the cutting member.
3. The electrotomy biopsy needle according to claim 2, wherein the cutting edge is formed by a wire or the cutting edge is an axially extending metal sheet.
4. The electrotomy biopsy needle according to claim 3, wherein a cutter head portion is provided on a front end of the cutter body, and the cutting edge is fixed to an end surface of one or both ends of the cutter head portion in a rotational direction of the cutter.
5. The electrotomy biopsy needle according to claim 4, wherein the blade portion is tile-shaped extending in a circumferential direction about a central axis of the cutting member.
6. The electrosurgical biopsy needle of claim 4, wherein the blade portion is formed by axially cutting away a portion of the leading end of the cutting member body.
7. The electrotomy biopsy needle according to claim 3, comprising more than two cutting edges, wherein one ends of the more than two cutting edges are connected by a connecting section, and the other ends are connected with the cutting member main body.
8. The electrotomy biopsy needle according to any one of claims 1 to 7, wherein the cutting member body comprises a metal tube and an insulating layer coated on the surface of the tube, and the tube is electrically connected with the cutting edge and the first port.
9. The resected biopsy needle according to any one of claims 1 to 7, wherein the cutting member main body is made of an insulating material, and at least one connecting wire is disposed in the tube wall of the cutting member main body, and one end of the connecting wire is electrically connected to the cutting edge, and the other end of the connecting wire is electrically connected to the first port.
10. The electrotomy biopsy needle according to any one of claims 1 to 7, wherein the puncture assembly further comprises a tubular housing, the rear end of the puncture tube is inserted and fixed in the front end of the housing, the rear end of the cutting member extends out of the puncture tube and into the housing, a push rod is fixedly sleeved on the cutting member extending into the housing, a first gear is threadedly engaged on the push rod, and the electrotomy biopsy needle further comprises a rotation stopping mechanism for limiting the rotation of the cutting member relative to the puncture tube.
11. An electrosurgical biopsy needle kit, comprising a handle, the handle comprising a housing and a circuit board disposed within the housing, characterized by further comprising an electrosurgical biopsy needle according to any of claims 1 to 10, the handle further comprising a third interface and a fourth interface mated with the first interface and the second interface, respectively, the third interface and the fourth interface being electrically connected to the circuit board, the electrosurgical biopsy needle being connected to the housing, the first interface and the second interface being electrically connected to the third interface and the fourth interface, respectively.
12. An electrosurgical biopsy needle kit comprising a handle including a housing, characterized by an electrosurgical biopsy needle according to any of claims 1 to 10, the electrosurgical biopsy needle being connected to the housing.
13. A vacuum assisted breast biopsy system, comprising:
the electro-resection biopsy needle kit of claim 11 or 12; and
a main unit including a high frequency transmitting module for generating a high frequency, the high frequency transmitting module having a high frequency output terminal and the high frequency input terminal, the high frequency output terminal and the high frequency input terminal being connected to the circuit board through a cable so as to be indirectly connected to the first interface and the second interface, or the high frequency output terminal and the high frequency input terminal being directly connected to the first interface and the second interface through a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511849.5A CN113509215B (en) | 2021-05-11 | 2021-05-11 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511849.5A CN113509215B (en) | 2021-05-11 | 2021-05-11 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113509215A true CN113509215A (en) | 2021-10-19 |
| CN113509215B CN113509215B (en) | 2023-07-04 |
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| CN202110511849.5A Active CN113509215B (en) | 2021-05-11 | 2021-05-11 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
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| CN209059418U (en) * | 2018-06-22 | 2019-07-05 | 重庆金山科技（集团）有限公司 | A kind of electrosurgical energy generator |
| CN211213471U (en) * | 2019-08-31 | 2020-08-11 | 武汉半边天医疗技术发展有限公司 | Radio frequency coagulation knife tube for breast biopsy |
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| CN107028657A (en) * | 2011-11-04 | 2017-08-11 | 波士顿科学医疗有限公司 | Tissue extraction apparatus and method |
| CN202477745U (en) * | 2012-03-01 | 2012-10-10 | 王中英 | Thyroid needle biopsy unit |
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| CN113509215B (en) | 2023-07-04 |
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