CN111631810A - Breast biopsy excision coagulator with radio-frequency coagulation cutter tube - Google Patents
Breast biopsy excision coagulator with radio-frequency coagulation cutter tube Download PDFInfo
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- CN111631810A CN111631810A CN201910819155.0A CN201910819155A CN111631810A CN 111631810 A CN111631810 A CN 111631810A CN 201910819155 A CN201910819155 A CN 201910819155A CN 111631810 A CN111631810 A CN 111631810A
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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
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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
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
Abstract
The invention discloses a breast biopsy resection coagulator with a radio frequency coagulation cutter tube, which comprises an outer tube rotating gear, a linear driving gear, a radio frequency electrical connector, a sample collector, a vacuum catheter kit, a puncture knife, a sampling groove, an outer tube, a cutting knife tube, an indicating shaft sleeve, a connector and an outer tube rotating device. The invention changes the cutting edge part of the cutting knife tube into an operation electrode of the radio frequency coagulation cutting device, and radio frequency current passes through the cutting edge of the cutting knife tube and is transmitted to pathological change tissues to be cut, and the tissue is cut while hemostasis is realized. Because the cutting is not mechanical, the problem that the cutting edge becomes blunt does not exist, and meanwhile, the calcified points can be broken through spark discharge. The heat affected zone generated by the energy of the discharge can play a blood coagulation role.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a breast biopsy resection coagulator with a radio frequency coagulation cutter tube.
Background
The vacuum assisted breast biopsy system is a minimally invasive medical instrument in breast surgery and is applied in clinical practice, and the system consists of a control system, a breast biopsy resectoscope and a vacuum negative pressure system. Wherein the breast biopsy resectoscope comprises a housing, a puncture knife, a cutting knife tube, an outer tube, a sampling groove, a sample collector, a vacuum catheter kit and the like. The vacuum auxiliary device is mainly utilized to suck the pathological change tissue into the sampling groove through vacuum negative pressure, the cutting knife tube rotates rapidly to cut the pathological change tissue sucked into the sampling groove, and the pathological change tissue is sucked into the sample collector through the negative pressure after being cut. The doctor can take a sample in the sample collector for pathological biopsy and judge whether the breast pathological tissue is benign or malignant through pathological analysis of the pathological tissue sample. The whole operation can be completed by only punching a hole on the mammary gland. Meanwhile, the vacuum-assisted breast biopsy system can also be used for minimally invasive resection of benign tumors.
The cutting knife tube of the breast biopsy resectoscope in the current market is made of stainless steel materials, and the cutting blade of the sharp edge is ensured by adopting the internal rotation cutting knife tube polished by calcium carbide. However, the cutting edge of the cutting knife tube is determined by the strength of the stainless steel material, so that the cutting knife tube is worn after each tissue cutting, and the knife head becomes dull gradually, particularly when encountering a mammary gland calcification lesion. After the cutter head becomes blunt, the tissue sample size that the cutting was obtained is less and less, in order to satisfy medical biopsy sample size requirement, need supply many times cutting.
The vacuum-assisted breast biopsy system on the market at present has no coagulation device, and in the breast surgery, doctors usually stop bleeding by applying a hemostatic needle or compressing a hemostatic mode to patients, and the vacuum-assisted breast biopsy system has the following defects: 1. A step of hemostasis is added in the operation, so that the operation time is increased; 2. the hemostatic effect is not rapid enough and complete hemostasis is not possible. After the breast operation, the doctor puts the patient under pressure with an elastic bandage and fixes the hemostatic mass on the position of the breast resection to stop bleeding. The disadvantages are that: 1. it is easy to cause secondary bleeding. The patient may experience laceration of the traction wound when walking or when moving slightly during flat time, with the risk of bleeding again. 2. Hematoma or ecchymosis appears.
The invention is innovated in order to solve the problems that the cutting edge of the cutting knife tube is easy to become blunt and convenient to stop bleeding and the like.
The invention content is as follows:
the invention aims to solve the problems that a vacuum-assisted breast biopsy system cannot cut and coagulate blood while cutting, and causes long-time pain and difficult hemostasis for a patient, and a cutting tool is easy to wear.
The radio frequency is short for alternating current variable high-frequency electromagnetic waves, and the radio frequency treatment equipment can output high-frequency current with the frequency variable between 200kHz and 5 MHz. The fine spark discharge of high-frequency current is used to burst cells to form tissue separation, and the thermal effect is used to make the wall of blood vessel become dehydrated, shriveled and denatured, the blood in blood vessel is coagulated, and the blood vessel and blood clot are mutually fused into a whole, or the local cell coagulation protein of soft tissue is denatured, so as to achieve the purpose of effective hemostasis. The device for realizing the radio frequency coagulating and cutting function is the radio frequency coagulating and cutting device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the cutting edge part of the cutting knife tube is changed into an operation electrode of the radio frequency coagulation cutting device, radio frequency current passes through the cutting edge of the cutting knife tube and is transmitted to the pathological change tissue to be cut, and the tissue is cut while hemostasis is realized. Because the cutting is not mechanical, the problem that the cutting edge becomes blunt does not exist, and meanwhile, the calcified points can be broken through spark discharge. The heat affected zone generated by the energy of the discharge can play a blood coagulation role.
According to the above, the scheme is specifically implemented in the following way:
a breast biopsy resection coagulator with a radio frequency coagulator tube, comprising: the puncture knife is fixedly connected to the front end of the outer knife pipe, a sampling groove is formed in the outer knife pipe, an indicating shaft sleeve is connected to the rear end of the outer knife pipe, the cutting knife pipe is sleeved in the outer knife pipe, the tail end of the cutting knife pipe is communicated with the sample collector, the sample collector is communicated with the vacuum negative pressure host through the vacuum guide pipe sleeve, the inner surface and the outer surface of the outer knife pipe and the puncture knife are subjected to insulation treatment, the cutting knife pipe comprises a pipe body in clearance fit with the outer knife pipe, one end of the pipe body, located in the outer knife pipe, is provided with an electrically conductive cutting edge, the other end of the pipe body is sleeved in a radio frequency electrical connecting piece, the periphery of the radio frequency electrical connecting piece is electrically connected with a conductive ring, the control host outputs high-frequency current to the cutting edge through the conductive ring or a lead, the pipe body penetrates through the radio frequency electrical connecting piece and is communicated with the sample collector, the cutting edge and a neutral electrode electrically connected with the control host form a radio frequency electrotome circuit; the pipe body is sleeved in the driving assembly, the pipe body is insulated with the outer cutter pipe and the driving assembly, the driving assembly comprises an outer sleeve and a lead screw transmission mechanism, the outer sleeve is connected with the indicating shaft sleeve, the lead screw transmission mechanism is sleeved on the inner periphery of the outer sleeve and is in clearance fit with the outer sleeve, the rear ends of the outer sleeve and the lead screw transmission mechanism are respectively provided with a hollow rotating gear and a linear driving gear, the driving handle is controlled by the control host to drive the rotating gear and the linear driving gear to rotate, the outer sleeve drives the outer cutter pipe to rotate, and the lead screw transmission mechanism drives the cutting cutter pipe to.
Further, screw drive mechanism includes the screw thread outer tube along with linear drive gear is rotatory, receives screw thread outer tube rotary drive, along screw thread outer tube axis linear motion's screw thread inner tube, screw thread is arranged to screw thread inner tube periphery, and the internal thread is arranged to screw thread outer tube internal week, and screw thread outer tube suit is in screw thread inner tube periphery, and the screw thread inner tube is fixed in cutting knife pipe periphery, and this screw thread inner tube is insulating with the cutting knife pipe, and the screw thread outer tube inlays in linear drive gear internal week, can dismantle with linear drive gear and be connected.
Preferably, the screw transmission mechanism further comprises a positioning shaft sleeve fixed on the periphery of the cutting knife pipe, the threaded inner sleeve is sleeved on the periphery of the positioning shaft sleeve and circumferentially fixed with the positioning shaft sleeve, the threaded inner sleeve is axially detachably connected with the positioning shaft sleeve, and the positioning shaft sleeve is insulated from the cutting knife pipe.
Furthermore, the outer sleeve consists of a connecting piece and an outer pipe rotating gear shaft, the indicating shaft sleeve and the outer pipe rotating gear shaft are fixedly connected through the connecting piece, the indicating shaft sleeve, the connecting piece and the outer pipe rotating gear shaft are all hollow, two annular convex ribs are symmetrically arranged in the indicating shaft sleeve and the outer pipe rotating gear shaft along the circumferential direction and parallel to the end face of the connecting piece, a tenon parallel to the central line of a hollow cavity of the indicating shaft sleeve or the outer pipe rotating gear shaft is arranged between the annular convex ribs, bosses lower than the middle part are arranged at two ends of the connecting piece, annular cutting grooves and mortises corresponding to the directions of the tenon are arranged on the bosses, the edges of the bosses are provided with slopes for clamping the annular cutting grooves into the convex ribs, the connecting piece fixedly connects the indicating shaft sleeve and the outer pipe rotating gear shaft together through the annular cutting grooves, and the coaxial connection and synchronous rotation of the shaft sleeve, the connecting piece and the, the tail end of the outer tube rotating gear shaft is sleeved with an outer tube rotating gear, and the outer tube rotating gear is stirred to drive the outer cutter tube to synchronously do circular motion.
Preferably, the periphery of the front end of the indicating shaft sleeve is provided with a raised arrow which indicates the orientation of the sampling groove on the outer knife pipe.
Preferably, the tube body is made of a conductive material, the surface of the tube body is coated with an insulating layer, the front end of the tube body is electrically connected with the cutting edge, and the rear end of the tube body penetrates through the tube wall of the tube body and is electrically connected with the radio frequency electrical connector.
Furthermore, the rotating gear and the linear driving gear are insulated from the radio frequency electric connecting piece and the pipe body, and the pipe body is connected with the radio frequency electric connecting piece in a sliding mode.
Optionally, the tube body is made of an insulating material, a conducting material is attached to the inner periphery of the tube body to form a conducting wire, the cutting edge is a metal wire ring, the metal wire ring is electrically connected with the conducting wire through a supporting leg and is fixed on the tube body, and the conducting wire is electrically connected with the radio frequency electrical connecting piece at the rear end of the tube body.
In light of the above, the present solution may equally be adopted in other ways, including the following or similar:
compared with the existing breast biopsy resectoscope, the breast biopsy resectoscope with the radio-frequency coagulating cutter tube has the following advantages:
the first one is that the breast biopsy excision coagulator with radio frequency coagulating cutter tube utilizes the radio frequency cutting coagulation principle to realize cutting and hemostasis during the breast operation. The existing breast biopsy resectoscope only cuts mechanically and has no hemostatic function.
Second, the cutting edge of the cutting knife tube of the breast biopsy excision coagulator with the radio frequency coagulation knife tube directly cuts tissue through radio frequency discharge without the need of rotating the cutting knife tube to cut the tissue, thereby saving partial components (such as the cutting knife tube swinging gear and the like) for controlling the rotation of the cutting knife tube in the existing breast biopsy excision device, and having simpler structure.
Thirdly, no radio frequency coagulation device is added in the breast biopsy resectoscope on the market at present, and the technology that the breast biopsy resectoscope applies radio frequency cutting coagulation is not reported yet, so the invention has certain innovation and popularization value.
Drawings
Wherein:
FIG. 1 is an assembly view of a breast biopsy resection coagulator with a radio frequency coagulotomy tube of the present invention;
FIG. 2 is an exploded view of the breast biopsy resection coagulator with a radio frequency coagulator tube according to the present invention;
FIG. 3 is an exploded view of the puncture knife driving mechanism of the breast biopsy excision hemagglutinator with the radio frequency coagulation knife tube according to the present invention;
FIG. 4 is an exploded view of the cutting blade tube of the breast biopsy resection coagulator with a radio frequency coagulation cutting blade tube according to the present invention;
FIG. 5 is a functional schematic diagram of the breast biopsy excision coagulator operating system with a radio frequency coagulating cutter tube of the present invention;
FIG. 6 is a schematic structural diagram of a puncture knife of the breast biopsy resection coagulator with a radio frequency coagulation knife tube;
FIG. 7 is a schematic structural diagram of the end face of the cutting knife tube of the breast biopsy excision coagulator with the radio frequency coagulation knife tube of the invention;
FIG. 8 is a schematic structural diagram of an indicating shaft sleeve, a connecting piece and an outer tube rotating gear shaft of the breast biopsy excision coagulator with the radio frequency coagulator tube;
FIG. 9 is a schematic structural view of a cutting knife tube driving mechanism of the breast biopsy excision coagulator with a radio frequency coagulation knife tube according to the present invention;
FIG. 10 is a schematic view of the cutting edge wire ring structure of the breast biopsy excision coagulator with a radio frequency coagulator tube according to the present invention;
FIG. 11 is a schematic view of the cutting edge wire ring structure of the breast biopsy excision coagulator with a radio frequency coagulator tube according to the present invention;
FIG. 12 is a side plan view of the drive handle 16 of the breast biopsy resection coagulator of the present invention with a radio frequency coagulotomy tube;
FIG. 13 is a schematic structural view of a front end wire casing of a cutting knife tube of the breast biopsy resection coagulator with a radio frequency coagulation knife tube according to the present invention;
FIG. 14 is a schematic structural view of a positioning sleeve 28 and a threaded inner sleeve of the breast biopsy excision coagulator with a radio frequency coagulation cutter tube according to the present invention;
FIG. 15 is a schematic view of the connection between the RF electrical connector and the cutting knife tube of the breast biopsy resection hemagglutination device with RF coagulating knife tube according to the present invention;
FIG. 16 is a schematic view of the lantern spring of the breast biopsy resection coagulator with the RF coagulator tube of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings, as can be seen from fig. 2, 3 and 4:
fig. 1 shows a complete breast biopsy resection coagulator 19 with a radio frequency coagulator tube, fig. 1 being a side elevation thereof. Fig. 2 is a side elevation view of the breast biopsy excision coagulator with the radio frequency coagulator tube, and fig. 3 is a side elevation view of the breast biopsy excision coagulator with the radio frequency coagulator tube with the outer cover 1 and other parts removed.
As shown in fig. 2 and fig. 3, a breast biopsy excision coagulator 19 with a radio frequency coagulator tube comprises an outer cover 1, an outer tube rotating gear 2, a linear driving gear 3, a radio frequency electrical connector 4, a sample collector 5, a vacuum catheter kit 6, a puncture knife 7, a sampling groove 8, an outer knife tube 9, a cutter tube 10, an indicating shaft sleeve 11, a connector 12 and an outer tube rotating gear shaft 13. The right end of the cutter tube 10 passes through the linear driving gear 3 and is fixedly connected with the sample collector 5, and the cutter tube 10 is limited to rotate.
The front end of the outer knife tube 9 is fixed with a puncture knife 7. the puncture knife 7 has a sharp three-blade knife tip, which can be a diamond three-blade knife tip 20 or an arc three-blade knife tip 21 as shown in the three-way view of fig. 6. The arc three-blade knife point 21 has the advantages of reducing puncture resistance and facilitating the operation of doctors. The knife tip reaches the lower part or the side of the breast lesion tissue and is positioned after the knife tip is assisted by an ultrasonic image or X-ray image device.
Referring to fig. 3, a sampling groove 8 with a length of about 19mm is formed on the outer knife tube 9, and both the outer knife tube 9 and the puncture knife 7 can be made of stainless steel materials and have insulation treatment on the inner surface and the outer surface, and can also be made of ceramic materials and hard plastics. The rear end of the outer cutter tube 9 is connected with an indicating shaft sleeve 11, the periphery of the front end of the indicating shaft sleeve 11 is provided with a raised arrow, and the arrow indicates the orientation of the outer cutter tube 9. In the breast operation, the doctor judges the orientation of the sampling groove 8 on the outer knife tube 9 by indicating the orientation of the arrow on the shaft sleeve 11.
Referring to fig. 8, a schematic structural diagram of the indicating shaft sleeve 11, the connecting member 12 and the outer tube rotating gear shaft 13 is shown, the outer sleeve 42 is composed of the connecting member 12 and the outer tube rotating gear shaft 13, the indicating shaft sleeve 11 and the outer tube rotating gear shaft 13 are fixedly connected by the connecting member 12, the indicating shaft sleeve 11, the connecting member 12 and the outer tube rotating gear shaft 13 are all hollow, two annular convex ribs 36 are symmetrically arranged in the indicating shaft sleeve 11 and the outer tube rotating gear shaft 13 along the circumferential direction and parallel to the end surface of the connecting member 12, a tongue 24 parallel to the central line of the hollow cavity of the indicating shaft sleeve 11 or the outer tube rotating gear shaft 13 is arranged between the annular convex ribs 36, two ends of the connecting member 12 are provided with bosses 26 lower than the middle part, the bosses 26 are provided with annular cutting grooves 27 and mortise grooves 25 corresponding to the orientations of the tongue 24, the edges of the bosses 26 have slopes for clamping the annular cutting grooves 27 into the, The outer tube rotating gear shaft 13 is fixedly connected together, the shaft sleeve 11, the connecting piece 12 and the outer tube rotating gear shaft 13 are coaxially connected and synchronously rotated through the occlusion of the tenon 24 and the mortise 25, and the tail end of the outer tube rotating gear shaft 13 is sleeved with the outer tube rotating gear 2. The outer pipe is stirred to rotate the gear 2 to drive the outer knife pipe 9 to synchronously do circular motion.
Referring to fig. 3, the diameter of the cutting knife tube 10 is smaller than that of the outer knife tube 9, and the cutting knife tube 10 can slide along the axial direction of the outer knife tube 9, as shown in fig. 9, the screw transmission mechanism 41 is composed of a positioning shaft sleeve 28, a threaded inner sleeve 29, and a threaded outer sleeve 30, the rear end of the cutting knife tube 10 is sleeved with the positioning shaft sleeve 28, the positioning shaft sleeve 28 is fixedly connected with the cutting knife tube 10 by means of glue or the like, as shown in fig. 14, a circle of convex ring 43 and a positioning sleeve 44 are arranged on the periphery of the positioning shaft sleeve 28, the convex ring 43 and the positioning sleeve 44 are arranged at intervals, a positioning shaft sleeve clamping groove 32 is formed between the convex ring 43 and the positioning sleeve 44, the positioning sleeve 44 is fixedly adhered to the positioning shaft sleeve 28, and can be removed after the adhesive is melted by heating, two protruding portions 45 symmetrically extend from the positioning sleeve 44 to the. The threaded inner sleeve 29 is close to 8 one ends of sampling grooves and is provided with a plurality of L-shaped clamping jaws 33 around the axis of the positioning shaft sleeve 28, the axis of the threaded inner sleeve 29 is pointed by one end of each L-shaped clamping jaw 33, the L-shaped clamping jaws 33 are in interference fit with the periphery of the clamping groove 32, the L-shaped clamping jaws 33 are embedded in the clamping groove 32, the L-shaped clamping jaws 33 are circumferentially fixed and are detachably connected with the positioning shaft sleeve 28 in the axial direction, the other end of each L-shaped clamping jaw is parallel to the axis of the threaded inner sleeve 29 and is connected with the threaded inner sleeve 29, the threaded inner sleeve 29 is hooked with the positioning shaft sleeve clamping groove 32 of the positioning shaft sleeve 28 through the L-shaped clamping jaws 33, the positioning shaft sleeve. The outer periphery of the threaded inner sleeve 29 is provided with threads, and the threaded outer sleeve 30 provided with internal threads is driven to rotate to push the threaded inner sleeve 29 arranged on the inner periphery of the threaded outer sleeve 30 to reciprocate along the axis of the threaded outer sleeve 30; or the inner periphery of the threaded inner sleeve 29 is provided with a wire groove, the outer periphery of the positioning shaft sleeve 28 is provided with a rib 46 which is parallel to the wire groove in a protruding mode, the rib 46 is embedded in the wire groove, and therefore the positioning shaft sleeve 28 and the threaded inner sleeve 29 are circumferentially fixed and axially detachably connected.
The thread outer sleeve 30 is meshed with the linear driving gear 3 through a gear tenon 34 arranged at the tail end, and the linear driving gear 3 is stirred to rotate, so that the cutting knife pipe 10 moves linearly in the outer knife pipe 9. The outer threaded sleeve 30 is sleeved on the inner periphery of the outer tube rotating gear shaft 13 and is in clearance fit with the outer tube rotating gear shaft 13.
Compared with the breast biopsy resectoscope in the current market, the breast biopsy resectoscope with the radio frequency coagulating cutter tube simplifies the driving structure, omits a mechanism for driving the cutting cutter tube 10 to rotate, directly cuts the tissue by adopting radio frequency discharge instead, does not need the cutting cutter tube 10 to rotate to cut the tissue, and simultaneously realizes cutting while coagulating by utilizing the radio frequency coagulating effect.
Referring to fig. 8, under the guidance of an ultrasonic imaging or X-ray imaging device, a doctor can drive the driving handle 16 through the control host 17 to control the rotation of the outer knife tube 9, so as to synchronously rotate the sampling slot 8 on the outer knife tube 9, obtain tissue samples in different directions or cut diseased tissues in different directions, for example, at positions of 12 o 'clock, 2 o' clock, 4 o 'clock, 6 o' clock, 8 o 'clock, 10 o' clock, and perform 360 ° whole-circle biopsy sampling.
As shown in fig. 3 and 4, the cutting blade tube 10 includes a tube body 37 coated with an insulating layer and a conductive cutting edge 14, and the cutting edge 14 is used to form a radio frequency discharge to cut a living tissue. The cutting edge 14 of the cutting knife tube 10 is designed to be a vertical end surface 23 as shown in fig. 7, and may be designed to have a certain inclined surface 23, or may be designed to have other patterns according to the requirement.
The end of the collector 5 depicted in fig. 2 and 5 is connected to a vacuum conduit assembly 6, and the other end of the vacuum conduit assembly 6 is connected to a vacuum sub-assembly 18, and vacuum sub-assembly 6 is supplied with vacuum by the vacuum sub-assembly 18. Before operation, the cutting edge 14 is positioned at the rear end of the outer cutter tube 9, after the operation is started, the vacuum negative pressure host 18 continuously sucks, the vacuum negative pressure host 18 transmits vacuum negative pressure to the tube cavity of the cutting cutter tube 10 through the vacuum conduit sleeve 6, the vacuum negative pressure in the tube cavity of the cutting cutter tube 10 is finally converged at the position of the sampling groove 8, and tissues to be cut are sucked into the sampling groove 8; the cutting knife tube 10 moves linearly, so that the purpose of sucking negative pressure into pathological tissues in the sampling groove 8 to be cut is achieved under the action of the cutting edge 14, the control host 17 controls the linear driving gear 3 to retreat, and the cutting knife tube 10 conveys the cut tissues to the sample collector 5 under the action of vacuum negative pressure suction. Simultaneously, the radio frequency coagulation cutting effect is utilized to cut and coagulate blood at the same time.
As shown in fig. 13, a plurality of wire grooves 31 are formed in the front end of the cutter tube 10 near the cutting edge 14, and the wire grooves 31 are uniformly and parallelly distributed on the cutter tube 10, mainly for increasing the airflow passage of the cutter tube 10. When being convenient for cutting the cutting knife pipe 10 and adsorbing the tissue in the sampling groove 8, the tissue can be better adsorbed at the front end part of the cutting knife pipe 10.
The cutting edge 14 of the cutting blade tube 10 is used to create a radio frequency discharge as one electrode in surgery, referred to as a surgical electrode. In operation, a metal plate with a large area is contacted with the buttocks or thighs of a patient to serve as one of the electrodes, which is called a neutral electrode. The contact area of the metal plate of the neutral electrode and the human body is very large, and the current quantity in unit area is very small, so that the neutral electrode has no heat effect on the human body.
The connecting piece 12, the outer tube rotating gear shaft 13, the outer tube rotating gear 2 and the linear driving gear 3 are all covered by the outer cover 1 as shown in fig. 1, and after the components are covered by the outer cover 1, the components can be installed with the driving handle 16 into a whole, so that a doctor can conveniently hold the components for operation, and the operation is shown in fig. 5.
The outer knife tube 9 and the puncture knife 7 can be made of stainless steel materials and have insulation treatment on the inner surface and the outer surface, and can also be made of ceramic materials and hard plastics. The cutting blade 14 of the cutting knife tube 10 is also insulated on the inner and outer surfaces, such as by spraying an insulating coating which is harmless to the human body, such as polytetrafluoroethylene, nano ceramic coating, epoxy insulating coating, or other materials, or made of ceramic materials or hard plastics. The cutting edge 14 of the cutting knife tube 10 is used as an operation electrode of the radio frequency coagulation cutting device, the cutting knife tube 10 is used as a conductor for connecting the conductive circuit and the cutting edge 14, and the cutting knife tube 10 is electrically connected with the high-frequency current generating device through the conductive circuit, so that the whole radio frequency coagulation cutting device is formed. With reference to fig. 12 and 13, the specific connection method is as follows:
referring to fig. 15, the cutting knife tube 10 is not coated with an insulating coating at a position close to the linear driving gear 3, so that the cutting knife tube 10 is electrically connected to the radio frequency electrical connector 4 in the form of a conductive ring structure, the periphery of the radio frequency electrical connector 4 is connected to the conductive ring 35 inside the driving handle 16, the conductive ring 35 inside the driving handle 16 is electrically connected to the control host 17, as shown in fig. 15, the center of the radio frequency electrical connector 4 is provided with a circular hole 38, the diameter of the circular hole 38 is as large as the outer diameter of the cutting knife tube 10, and the cutting knife tube 10 is sleeved in the. When the cutting knife pipe 10 linearly moves forward or retreats, the cutting knife pipe always keeps a sliding state with the radio frequency electric connecting piece 4, and meanwhile, the cutting knife pipe 10 is ensured to be attached to the radio frequency electric connecting piece 4. The outer tube rotating gear 2 and the linear driving gear 3 are made of insulating materials.
The radio frequency electrical connector 4 and the cutting knife tube 10 have another connection mode, which specifically comprises:
as shown in fig. 16, a lantern spring 39 is sleeved in the rf electrical connector 4, the rf electrical connector 4 is electrically connected to the cutter tube 10 through the lantern spring 39, a central contraction portion of the lantern spring 39 is attached to the cutter tube 10, and meanwhile, the lantern spring 39 has certain elasticity, which can ensure smooth linear reciprocating motion of the cutter tube 10.
The control main unit 17 supplies a high-frequency current to the inner conductive ring 35 of the driving handle, and the inner conductive ring 35 of the driving handle conducts the high-frequency current to the cutting edge 14 of the cutter tube 10.
Two motors are arranged in the driving handle 16 and respectively drive the outer pipe rotating gear 2 and the linear driving gear 3 to rotate; the driving handle 16 is connected with the control host 17 by a cable, and the cable contains a plurality of power supplies of the driving motor and a lead for providing a radio frequency coagulation cutting power supply.
As another embodiment, according to fig. 10 and 11
The cutting knife tube 10, the puncture knife 7 and the outer knife tube 9 are made of stainless steel materials, and insulating materials such as ceramic materials, hard plastics and the like are replaced by insulating materials to realize the insulation of the components;
and a metal wire ring 15 is extended out in the direction of the cutting edge 14 of the cutting knife tube 10 to be used as an operation electrode of the radio frequency coagulation cutting device. There may be two cases:
in the first case, as shown in fig. 10, a wire loop 15 is extended from the cutting edge 14 of the cutting knife tube 10 of the coagulator for breast biopsy resection, and is used as an operation electrode of the radio frequency coagulation device, the wire loop 15 is connected with the cutting knife tube 10 through 1 or 2 or more supporting feet 40, and the cutting knife tube 10 is completely insulated. Inside or outside the cutting knife pipe 10 forms the electrically conductive return circuit through setting up wire connection electrical property connecting piece 4, for example with inlay modes such as conducting material, electrically conductive silver thick liquid bat printing, non-metallic material local metallization.
In the second case, as shown in fig. 11, in the lumen of the cutting knife tube 10 of the coagulator for breast biopsy resection, the added wire loop 15 is used as an operation electrode of the rf coagulator, and is electrically connected to the electrical connector 4 through 1 or 2 or more wires, and specifically, the electrical connector 4 can form a conductive loop by setting the wires inside the cutting knife tube 10, for example, by embedding conductive material, conductive silver paste pad printing, partial metallization of non-metallic material, etc. Thereby forming a radio frequency cutting coagulation effect.
The wire ring 15 is made of a metal material having good electrical conductivity, a certain hardness, and resistance to spark erosion, such as hard stainless steel wire, tungsten wire, thorium tungsten wire, and the like.
The control host 17 provides both power for driving the gear of the handle 16 to rotate and radio frequency power.
The innovation point and the protection point of the invention lie in that the radio frequency cutting coagulation technology is skillfully utilized to replace the mechanical cutting technology, and a radio frequency coagulation cutting device is added in the breast biopsy resectoscope. Engineers familiar with this art or others familiar with this art may modify this matter somewhat in a way that does not preclude patent infringement by this invention.
Claims (8)
1. A breast biopsy resection coagulator with a radio frequency coagulator tube, comprising: the puncture knife comprises a puncture knife (7), an outer knife tube (9), a cutting knife tube (10), a sample collector (5), a vacuum guide tube external member (6) and a vacuum negative pressure host (18), wherein the puncture knife (7) is fixedly connected with the front end of the outer knife tube (9), a sampling groove (8) is formed in the outer knife tube (4), the rear end of the outer knife tube (10) is connected with an indicating shaft sleeve (11), the cutting knife tube (10) is sleeved in the outer knife tube (9), the tail end of the cutting knife tube (10) is communicated with the sample collector (5), the sample collector (5) is communicated with the vacuum negative pressure host (18) through the vacuum guide tube external member (6), the puncture knife tube is characterized in that the inner surface and the outer surface of the puncture knife tube (9) and the puncture knife (7) are insulated, the cutting knife tube (10) comprises a tube body (37) in clearance fit with the outer knife tube (9), and one end, positioned in the outer knife tube (9), of the tube body (37) is, the other end of the radio frequency electric connector is sleeved in a radio frequency electric connector (4), the periphery of the radio frequency electric connector (4) is electrically connected with a conducting ring (35), a control host (17) outputs high-frequency current to a cutting edge (14) through the conducting ring (35) through a tube body (37) or a conducting wire, the tube body (37) penetrates through the radio frequency electric connector (4) to be communicated with a sample collector (5) and is circumferentially fixed, and the cutting edge (14) and a neutral electrode electrically connected with the control host (17) form a radio frequency electric knife circuit; the utility model discloses a cutter pipe, including body (37), drive assembly, outer cutter pipe (9), drive assembly is including connecting outer tube (42) of instructing axle sleeve (11), and the cover locates the lead screw drive mechanism (41) of interior week and clearance fit each other of outer tube (42), and outer tube (42), lead screw drive mechanism (41) rear end are equipped with respectively and are hollow rotating gear (2) and linear drive gear (3), and drive handle (16) are controlled by control host computer (17) and are driven rotating gear (2) and linear drive gear (3) rotatory, make outer tube (42) drive outer cutter pipe (9) rotatory, make lead screw drive mechanism (41) drive cutter pipe (10) along the reciprocal linear motion of axis direction.
2. The breast biopsy resection coagulator with radio frequency coagulotomy tube according to claim 1, characterized in that: screw rod drive mechanism (41) include along with screw thread outer tube (30) of linear drive gear (3) rotation and receive screw thread outer tube (30) rotary drive, along screw thread inner tube (29) of screw thread outer tube (30) axis linear motion, screw thread has been arranged in screw thread inner tube (29) periphery, and internal thread is arranged to screw thread outer tube (30) internal week, and screw thread outer tube (30) suit is in screw thread inner tube (29) periphery, and cutting knife pipe (10) periphery is fixed in cutting knife pipe (29), and this screw thread inner tube (29) is insulating with cutting knife pipe (10), and screw thread outer tube (30) inlay in linear drive gear (3) internal week, can dismantle with linear drive gear (3) and be connected.
3. The breast biopsy resection coagulator with radio frequency coagulotomy tube according to claim 2, characterized in that: the lead screw transmission mechanism (41) further comprises a positioning shaft sleeve (28) fixed on the periphery of the cutting knife pipe (10), the periphery of the positioning shaft sleeve (28) is sleeved with the threaded inner sleeve (29), the threaded inner sleeve is circumferentially fixed with the positioning shaft sleeve (28), the threaded inner sleeve is axially detachably connected with the positioning shaft sleeve, and the positioning shaft sleeve (28) is insulated from the cutting knife pipe (10).
4. The breast biopsy resection coagulator with radio frequency coagulotomy tube according to claim 1, characterized in that: the outer sleeve (42) is composed of a connecting piece (12) and an outer pipe rotating gear shaft (13), the indicating shaft sleeve (11) and the outer pipe rotating gear shaft (13) are fixedly connected through the connecting piece (12), the indicating shaft sleeve (11), the connecting piece (12) and the outer pipe rotating gear shaft (13) are all hollow, two annular convex ribs (36) are symmetrically arranged in the indicating shaft sleeve (11) and the outer pipe rotating gear shaft (13) in parallel to the end face of the connecting piece (12) along the circumferential direction, a tenon tongue (24) parallel to the central line of a hollow cavity of the indicating shaft sleeve (11) or the outer pipe rotating gear shaft (13) is arranged between the annular convex ribs (36), bosses (26) lower than the middle part are arranged at two ends of the connecting piece (12), annular cutting grooves (27) and tenon grooves (25) corresponding to the directions of the tenon tongues (24) are arranged on the bosses (26), the edge of each boss (26) is provided with a slope for clamping the annular cutting grooves (27) into, the indicating shaft sleeve (11) and the outer pipe rotating gear shaft (13) are fixedly connected together through the annular cutting groove (27) by the connecting piece (26), the shaft sleeve (11), the connecting piece (12) and the outer pipe rotating gear shaft (13) are coaxially connected and synchronously rotated through the occlusion of the tenon (24) and the mortise (25), the outer pipe rotating gear (2) is sleeved at the tail end of the outer pipe rotating gear shaft (13), and the outer pipe rotating gear (2) is stirred to drive the outer cutter pipe (9) to synchronously do circular motion.
5. The breast biopsy resection coagulator with radio frequency coagulator tube according to any one of claims 1 or 4, wherein: the periphery of the front end of the indicating shaft sleeve (11) is provided with a raised arrow which indicates the position of the sampling groove (8) on the outer knife tube (9).
6. The breast biopsy resection coagulator with a radio frequency coagulator tube according to claim 1, wherein: the pipe body (37) is made of a conductive material, the surface of the pipe body (37) is coated with an insulating layer, the front end of the pipe body (37) is electrically connected with the cutting edge (14), and the rear end of the pipe body (37) is electrically connected with the radio frequency electrical connector (4).
7. The breast biopsy resection coagulator with radio frequency coagulotomy tube according to claim 1, characterized in that: the pipe body (37) is made of insulating materials, the inner periphery of the pipe body (37) is attached to conducting materials to form a conducting wire, the cutting edge (14) adopts a metal wire ring (15), the metal wire ring (15) is electrically connected with the conducting wire through supporting legs (40) and fixed on the pipe body (37), and the conducting wire penetrates through the pipe wall of the pipe body (37) at the rear end of the pipe body (37) and is electrically connected with the radio frequency electrical connecting piece (4).
8. The breast biopsy resection coagulator with radio frequency coagulotomy tube according to claim 1, characterized in that: the rotating gear (2) and the linear driving gear (3) are insulated from the radio frequency electric connecting piece (4) and the pipe body (37), and the pipe body (37) is connected with the radio frequency electric connecting piece (4) in a sliding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819155.0A CN111631810B (en) | 2019-08-31 | 2019-08-31 | Mammary gland biopsy excision coagulum device with radio frequency coagulum cutter tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819155.0A CN111631810B (en) | 2019-08-31 | 2019-08-31 | Mammary gland biopsy excision coagulum device with radio frequency coagulum cutter tube |
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| CN111631810A true CN111631810A (en) | 2020-09-08 |
| CN111631810B CN111631810B (en) | 2023-04-25 |
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| CN201910819155.0A Active CN111631810B (en) | 2019-08-31 | 2019-08-31 | Mammary gland biopsy excision coagulum device with radio frequency coagulum cutter tube |
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| CN116269532A (en) * | 2023-05-23 | 2023-06-23 | 武汉金柏威光电技术有限公司 | Quick-cutting mammary gland biopsy excision blood coagulation device |
| SE2250433A1 (en) * | 2022-04-05 | 2023-10-06 | Resitu Medical Ab | A biopsy instrument |
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| CN113413172A (en) * | 2021-05-11 | 2021-09-21 | 重庆西山科技股份有限公司 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
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