CN111631810B - Mammary gland biopsy excision coagulum device with radio frequency coagulum cutter tube - Google Patents
Mammary gland biopsy excision coagulum device with radio frequency coagulum cutter tube Download PDFInfo
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- CN111631810B CN111631810B CN201910819155.0A CN201910819155A CN111631810B CN 111631810 B CN111631810 B CN 111631810B CN 201910819155 A CN201910819155 A CN 201910819155A CN 111631810 B CN111631810 B CN 111631810B
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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
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- 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
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Abstract
The invention discloses a mammary gland biopsy excision blood coagulation device with a radio frequency blood coagulation knife tube, which comprises an outer tube rotation gear, a linear driving gear, a radio frequency electric connection piece, a sample collector, a vacuum catheter sleeve, a puncture knife, a sampling groove, an outer tube, a cutting knife tube, an indication shaft sleeve, a connection piece and an outer tube rotation device. The invention changes the cutting edge part of the cutting knife tube into the 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 conducted to pathological tissues to be cut, and the tissue is cut and simultaneously hemostasis is achieved. Because the cutting is not a mechanical mode, the problem of dullness of the cutting edge does not exist, and meanwhile, calcification points can be broken up through spark discharge. The heat affected zone generated by the energy of the discharge can play a role in coagulation.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a mammary gland biopsy excision coagulum device with a radio frequency coagulum cutter tube.
Background
The vacuum assisted breast biopsy system is a minimally invasive medical instrument in breast surgery and is applied to clinical practice, and the system consists of a control system, a breast biopsy exciser and a vacuum negative pressure system. The breast biopsy exciser device consists of a housing, a puncture knife, a cutting knife tube, an outer tube, a sampling groove, a sample collector, a vacuum catheter suite and the like. The method mainly comprises the steps of sucking pathological tissues into a sampling groove through vacuum negative pressure by using a vacuum auxiliary device, rapidly rotating a cutting knife tube to cut the pathological tissues sucked into the sampling groove, and sucking the pathological tissues into a sample collector through negative pressure after cutting. Doctors can take samples in the sample collector to do pathological biopsy, and the pathological analysis of pathological tissue samples is used for judging whether the pathological tissue of the mammary gland is benign or malignant. The whole procedure can be completed by only punching a hole in the mammary gland. Meanwhile, the vacuum assisted breast biopsy system can also be used for minimally invasive excision of benign tumors.
The cutting knife tube of the breast biopsy exciser in the current market is made of stainless steel materials, and an internal rotation cutting knife tube polished by calcium carbide is adopted to ensure the cutting edge of a sharp edge. However, since the strength of the stainless steel material itself determines the cutting edge of the cutter tube, there is wear and tear on each cut of tissue, and the cutter head becomes progressively dulled, particularly when encountering breast calcification foci. After the cutter head becomes blunt, the tissue sample volume obtained by cutting is smaller and smaller, and in order to meet the requirement of the medical biopsy sample volume, the cutter head needs to be supplemented with a plurality of times of cutting.
The vacuum assisted breast biopsy system on the current market has no coagulation device, and in breast surgery, doctors usually stop bleeding by injecting a hemostatic needle or compressing a hemostatic mode into patients, and the vacuum assisted breast biopsy system has the following defects: 1. a hemostatic step is added in the operation, so that the operation time is prolonged; 2. the hemostatic effect is not rapid and does not completely stop bleeding. After the mammary gland operation, a doctor uses an elastic bandage to press and bind the patient, and the hemostatic block is fixed on the mastectomy part to stop bleeding. The disadvantages are: 1. and is prone to causing re-bleeding. The patient can lead to traction wound tearing when walking or slightly moving at flat time, and the risk of secondary bleeding is caused. 2. Hematoma or ecchymosis occurs.
The invention is innovated for solving the problems that the cutting edge of the cutting knife tube is easy to be dulled, the hemostasis is convenient, and the like.
The invention comprises the following steps:
the invention aims to solve the problems that a vacuum assisted breast biopsy system can not cut blood while the blood coagulation is performed, long-time pain is caused to a patient, hemostasis is difficult, 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 and form tissue separation, and the thermal effect is used to dewater, shrink and denature the blood vessel wall, coagulate blood in blood vessel, and fuse blood vessel and blood clot together or denature local cell coagulation protein of soft tissue, so as to achieve the purpose of effective hemostasis. The device for realizing the function is called a radio frequency coagulation cutting device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the cutting edge of the cutting knife tube is changed into a surgical electrode of the radio frequency coagulation cutting device, and radio frequency current passes through the cutting edge of the cutting knife tube and is conducted to pathological tissues to be cut, and hemostasis is achieved while the tissues are cut. Because the cutting is not a mechanical mode, the problem of dullness of the cutting edge does not exist, and meanwhile, calcification points can be broken up through spark discharge. The heat affected zone generated by the energy of the discharge can play a role in coagulation.
According to the above, the present solution is implemented in the following manner:
a breast biopsy excision coagulator with a radio frequency coagulation knife tube comprising: the device comprises a puncture knife, an outer knife tube, a cutting knife tube, a sample collector, a vacuum catheter sleeve and a vacuum negative pressure host, wherein the puncture knife is fixedly connected to the front end of the outer knife tube, a sampling groove is formed in the outer knife tube, the rear end of the outer knife tube is connected with an indicating shaft sleeve, the cutting knife tube is sleeved in the outer knife tube, the tail end of the cutting knife tube is communicated with the sample collector, the sample collector is communicated with the vacuum negative pressure host through the vacuum catheter sleeve, the inner surface and the outer surface of the outer knife tube and the inner surface of the puncture knife are insulated, the cutting knife tube comprises a tube body in clearance fit with the outer knife tube, one end of the tube body in the outer knife tube is provided with a conductive cutting edge, the other end of the tube body is sleeved in a radio frequency electric connection piece, the periphery of the radio frequency electric connection piece is electrically connected with a conductive ring, the control host outputs high-frequency current to the cutting edge through the conductive ring tube body or a conductive wire, the tube body passes through the radio frequency electric connection piece and is communicated with the sample collector and is circumferentially fixed, and the cutting edge and a neutral electrode of the control host forms a radio frequency electric knife circuit; the pipe body is sleeved in the driving assembly, the pipe body is insulated from the outer cutter pipe and the driving assembly, the driving assembly comprises an outer sleeve connected with the indicating shaft sleeve and a screw transmission mechanism sleeved on the inner periphery of the outer sleeve and in clearance fit with each other, a hollow rotating gear and a linear driving gear are respectively arranged at the rear ends of the outer sleeve and the screw transmission mechanism, the driving handle is controlled by the control host to drive the rotating gear and the linear driving gear to rotate, the outer cutter pipe is driven by the outer sleeve to rotate, and the screw transmission mechanism drives the cutter pipe to reciprocate in the axial direction.
Further, the screw rod transmission mechanism comprises a threaded outer sleeve rotating along with the linear driving gear and a threaded inner sleeve rotationally driven by the threaded outer sleeve and moving linearly along the axis of the threaded outer sleeve, threads are arranged on the periphery of the threaded inner sleeve, internal threads are arranged on the inner periphery of the threaded outer sleeve, the threaded outer sleeve is sleeved on the periphery of the threaded inner sleeve, the threaded inner sleeve is fixed on the periphery of the cutting knife tube, the threaded inner sleeve is insulated from the cutting knife tube, and the threaded outer sleeve is embedded in the inner periphery of the linear driving gear and detachably connected with the linear driving gear.
Preferably, the screw transmission mechanism further comprises a positioning shaft sleeve fixed on the periphery of the cutting knife tube, the threaded inner sleeve is sleeved on the periphery of the positioning shaft sleeve and is circumferentially fixed with the positioning shaft sleeve, the positioning shaft sleeve is axially detachably connected with the cutting knife tube, and the positioning shaft sleeve is insulated from the cutting knife tube.
Further, the outer sleeve is composed of a connecting piece and an outer tube rotating gear shaft, the indicating shaft sleeve and the outer tube rotating gear shaft are connected and fixed through the connecting piece, the indicating shaft sleeve, the connecting piece and the outer tube rotating gear shaft are all hollow, two annular ribs are symmetrically arranged in the indicating shaft sleeve and the outer tube rotating gear shaft along the circumferential direction and parallel to the end face of the connecting piece, a tongue parallel to the central line of a hollow cavity of the indicating shaft sleeve or the outer tube rotating gear shaft is arranged between the annular ribs, a boss lower than the middle part is arranged at two ends of the connecting piece, annular grooves and a tongue groove corresponding to the tongue groove position are arranged on the boss, the edge of the boss is provided with a slope for clamping the annular grooves into the tongue grooves, the indicating shaft sleeve and the outer tube rotating gear shaft are connected and fixed together through the connecting piece by the annular grooves, the coaxial connection and synchronous rotation of the tongue sleeve, the connecting piece and the outer tube rotating gear shaft are realized through the engagement with the tongue groove, the tail end of the outer tube rotating gear shaft sleeve is sleeved with a rotating gear, and the outer tube rotating gear is driven to synchronously do circumferential movement.
Preferably, the outer 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 cutter tube.
Preferably, the tube body is made of conductive materials, an insulating layer is coated on the surface of the tube body, 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 to be electrically connected with the radio frequency electric connection piece.
Further, the rotating gear, the linear driving gear, the radio frequency electric connecting piece and the pipe body are insulated, and the pipe body is in sliding connection with the radio frequency electric connecting piece.
Optionally, the body is made by insulating material, and the body inner circumference adheres to the conductive material and forms the wire, cutting edge adopts the wire ring, and this wire ring passes through supporting legs electric connection wire and fixes on the body, and this wire is at body rear end electric connection radio frequency electric connection spare.
According to the above, the present solution may equally take other forms, including the following or the like:
compared with the existing breast biopsy resectoscope, the breast biopsy resectoscope with the radio-frequency resectoscope has the following advantages:
the first mammary gland biopsy excision coagulum device with the radio frequency coagulation knife tube utilizes the radio frequency cutting coagulation principle, and can cut and stop bleeding in the mammary gland operation process. However, the existing breast biopsy resectoscope is only mechanically cut and has no hemostatic function.
And the cutting edge part of the cutting knife tube of the breast biopsy excision blood coagulation device with the radio frequency blood coagulation knife tube directly cuts tissues through radio frequency discharge, the cutting knife tube is not required to rotationally cut the tissues, and partial components (cutting knife tube swing gears and the like) for controlling the rotation of the cutting knife tube in the existing breast biopsy excision device are omitted, so that the structure is simpler.
Third, the radio frequency coagulation device is not added into the breast biopsy resectoscope on the market at present, and the technology that the breast biopsy resectoscope uses radio frequency cutting coagulation is not reported yet, so that the invention has certain innovation and popularization value.
Drawings
Wherein:
FIG. 1, an assembly view of a breast biopsy resectoscope with a radiofrequency coagulation tube of the present invention;
FIG. 2, an exploded schematic view of a breast biopsy resectoscope with a radiofrequency coagulation tube of the present invention;
FIG. 3 is an exploded schematic view of the lancing knife drive mechanism of the breast biopsy excising coagulator with RF coagulation knife tube of the present invention;
FIG. 4 is an exploded view of the cutting blade tube of the breast biopsy excising coagulator with radiofrequency coagulation blade tube of the present invention;
FIG. 5 is a functional schematic diagram of a breast biopsy excision coagulator operating system with a radio frequency coagulator tube of the present invention;
FIG. 6 is a schematic view of the structure of a puncture knife of a breast biopsy excising coagulation vessel with a radio frequency coagulation knife tube according to the present invention;
FIG. 7 is a schematic view of the structure of the end face of a cutting blade tube of a breast biopsy excising coagulator with a radio frequency coagulator tube of the present invention;
FIG. 8 is a schematic view of the structure of the indication shaft sleeve, the connecting piece and the outer tube rotating gear shaft of the breast biopsy excision coagulant with the radio frequency coagulation knife tube;
FIG. 9 is a schematic diagram of a cutter tube driving mechanism of a breast biopsy excising coagulator with a radio frequency coagulator tube according to the present invention;
FIG. 10 is a schematic view of the cutting edge wire loop structure of a breast biopsy excision coagulator with a radio frequency coagulator tube of the present invention;
FIG. 11 is a schematic view of the cutting edge wire loop structure of a breast biopsy excision coagulator with a radio frequency coagulator tube of the present invention;
FIG. 12, a side plan view of the drive handle 16 of the breast biopsy exciser coagulator of the present invention with a radio frequency coagulator tube;
FIG. 13 is a schematic view of the structure of a wire slot at the front end of a cutting blade tube of a breast biopsy excision coagulator with a radio frequency coagulator tube of the present invention;
FIG. 14, schematic view of the structure of the threaded inner sleeve, of the positioning sleeve 28 of the breast biopsy resectoscope with RF coagulation tube of the present invention;
FIG. 15 is a schematic view of the connection of the RF electrical connector of the breast biopsy excising coagulant with RF coagulation knife tube and the cutting knife tube;
fig. 16, a schematic view of the lantern spring of the breast biopsy exciser coagulator with radiofrequency coagulation 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 resectoscope 19 with a radiofrequency coagulation tube, fig. 1 in a side-to-side view. Fig. 2 is a side bottom view of the breast biopsy excising coagulation vessel with the rf coagulation knife tube, and fig. 3 is a side top view of the breast biopsy excising coagulation vessel with the rf coagulation knife tube with the outer cover 1 removed.
The mammary gland biopsy excision coagulant 19 with the radio frequency coagulant tube shown in fig. 2 and 3 comprises a housing 1, an outer tube rotating gear 2, a linear driving gear 3, a radio frequency electric connection piece 4, a sample collector 5, a vacuum catheter kit 6, a puncture knife 7, a sampling groove 8, an outer knife tube 9, a cutting knife tube 10, an indication shaft sleeve 11, a connection piece 12 and an outer tube rotating gear shaft 13. The right end of the cutter tube 10 passes through the linear driving gear 3 to be connected and fixed with the sample collector 5 for limiting the rotation of the cutter tube 10.
The front end of the outer cutter tube 9 is fixed with a puncture cutter 7, and as shown in a three-dimensional view in fig. 6, the puncture cutter 7 is provided with a sharp three-blade cutter point, which can be a diamond three-blade cutter point 20 or an arc three-blade cutter point 21. The arc-shaped three-blade knife point 21 has the advantages of reducing puncture resistance and facilitating operation of doctors. The knife tip is positioned under or beside the breast lesion tissue under the assistance of ultrasonic imaging or X-ray imaging equipment.
Referring to fig. 3, the outer cutter tube 9 is provided with a sampling groove 8 with the length of about 19mm, and the outer cutter tube 9 and the puncture cutter 7 can be made of stainless steel materials, insulating treatment is carried out 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, and the periphery of the front end of the indicating shaft sleeve 11 is provided with a raised arrow which indicates the direction of the outer cutter tube 9. In breast surgery, a doctor determines the position of the sampling slot 8 on the outer cutter tube 9 by indicating the position of the arrow on the shaft sleeve 11.
Referring to the schematic structural diagram of the indication shaft sleeve 11, the connecting piece 12 and the outer tube rotating gear shaft 13 shown in fig. 8, the outer sleeve 42 is composed of the connecting piece 12 and the outer tube rotating gear shaft 13, the indication shaft sleeve 11 and the outer tube rotating gear shaft 13 are fixedly connected through the connecting piece 12, the indication shaft sleeve 11, the connecting piece 12 and the outer tube rotating gear shaft 13 are all hollow, two annular ribs 36 are symmetrically arranged in the indication shaft sleeve 11 and the outer tube rotating gear shaft 13 along the circumferential direction and parallel to the end face of the connecting piece 12, a tongue 24 parallel to the central line of a hollow cavity of the indication shaft sleeve 11 or the outer tube rotating gear shaft 13 is arranged between the annular ribs 36, two ends of the connecting piece 12 are provided with a boss 26 lower than the middle part, the boss 26 is provided with an annular groove 27 and a tongue 25 corresponding to the orientation of the tongue 24, the edge of the boss 26 is provided with a slope for clamping the annular groove 27 into the tongue 36, the connecting piece 26 is fixedly connected with the indication shaft sleeve 11 and the outer tube rotating gear shaft 13 through the annular groove 27, and the engagement of the tongue 24 and the tongue 25 is realized, and the coaxial rotation of the shaft sleeve 11, the connecting piece 12 and the outer tube rotating gear shaft 13 and the outer tube rotating gear 2 of the tail end rotating gear shaft 13 are synchronously engaged. The outer tube rotating gear 2 is shifted to drive the outer cutter tube 9 to synchronously do circular motion.
Referring to fig. 3, the diameter of the cutter tube 10 is smaller than that of the outer cutter tube 9, the cutter tube can slide along the axial direction of the outer cutter tube 9, as shown in fig. 9, the screw transmission mechanism 41 consists of a positioning shaft sleeve 28, a threaded inner sleeve 29 and a threaded outer sleeve 30, the rear end of the cutter tube 10 is sleeved with the positioning shaft sleeve 28, the positioning shaft sleeve 28 is fixedly connected with the cutter tube 10 in a viscose mode or the like, as shown in fig. 14, the periphery of the positioning shaft sleeve 28 is provided with a circle of convex rings 43 and a positioning sleeve 44, the convex rings 43 and the positioning sleeve 44 are arranged at intervals, a positioning shaft sleeve clamping groove 32 is formed between the convex rings 43 and the positioning sleeve 44, the positioning sleeve 44 is fixedly adhered with the positioning shaft sleeve 28, the positioning sleeve 44 can be taken down after the adhesive is melted by heating, the positioning sleeve 44 is symmetrically extended with two protruding parts 45 along the radial outer circumference for keeping the clearance between the cutter tube 10 and the outer cutter tube 9, and the positioning sleeve 44 is made of insulating materials. The screw thread inner sleeve 29 is close to one end of the sampling groove 8 and surrounds the axis of the positioning shaft sleeve 28 and is provided with a plurality of L-shaped clamping claws 33, one end of each L-shaped clamping claw 33 points to the axis of the screw thread inner sleeve 29, the L-shaped clamping claws 33 are in interference fit with the periphery of the clamping groove 32, the L-shaped clamping claws 33 are embedded in the clamping groove 32 and are circumferentially fixed and axially detachably connected with the positioning shaft sleeve 28, the other end of each L-shaped clamping claw is parallel to the axis of the screw thread inner sleeve 29 and is connected with the screw thread inner sleeve 29, the screw thread inner sleeve 29 is hooked with the positioning shaft sleeve clamping groove 32 of the positioning shaft sleeve 28 through the L-shaped clamping claws 33, the positioning shaft sleeve 28 rotates or moves linearly along with the screw thread inner sleeve 29, and the heating positioning sleeve 44 melts adhesive to detach the screw thread inner sleeve 29 from the end of the positioning sleeve 44. The periphery of the threaded inner sleeve 29 is provided with threads, the threaded outer sleeve 30 provided with internal threads is driven to rotate, and the threaded inner sleeve 29 arranged on the inner periphery of the threaded outer sleeve 30 is pushed to reciprocate along the axis of the threaded outer sleeve 30; or the inner circumference of the threaded inner sleeve 29 is provided with a wire groove, while the outer circumference of the positioning shaft sleeve 28 is provided with a rib 46 in a protruding way parallel to the wire groove, so that the rib 46 is embedded in the wire groove, thereby the positioning shaft sleeve 28 and the threaded inner sleeve 29 are circumferentially fixed and axially detachably connected.
The threaded outer sleeve 30 is connected with the linear driving gear 3 in a meshed manner through a gear tongue 34 arranged at the tail end, and the linear driving gear 3 is shifted to rotate, so that the cutting knife tube 10 moves in the outer knife tube 9 in a linear manner. The threaded outer 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 on the market at present, the breast biopsy resectoscope with the radio-frequency resectoscope tube simplifies the driving structure, omits the mechanism for driving the cutting tube 10 to rotate, directly cuts tissues by adopting radio-frequency discharge instead of directly cutting the tissues, does not need to rotationally cut the tissues by the cutting tube 10, and simultaneously realizes the coagulation while cutting by utilizing the radio-frequency resectoscope effect.
Referring to fig. 8, under the guidance of the 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 cutter tube 9, so that the sampling groove 8 on the outer cutter tube 9 rotates synchronously to obtain tissue samples with different orientations or cut pathological tissues with different orientations, such as 12 o 'clock, 2 o' clock, 4 o 'clock, 6 o' clock, 8 o 'clock, 10 o' clock and the like, and perform 360-degree full-circle biopsy sampling.
As shown in fig. 3 and 4, the cutter 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 radio frequency discharge for cutting living tissue. The cutting edge 14 portion of the cutter tube 10 of fig. 7 is generally designed as a perpendicular end surface 23, and may be designed in a pattern having a certain inclined surface 23, or may be designed in other patterns as desired.
The tail end of the collector 5 shown in fig. 2 and 5 is communicated with the vacuum conduit sleeve 6, the other end of the vacuum conduit sleeve 6 is communicated with the vacuum negative pressure host 18, and the vacuum negative pressure is provided for the vacuum conduit sleeve 6 through the vacuum negative pressure host 18. Before an operation is implemented, 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 into the tube cavity of the cutting cutter tube 10 through the vacuum catheter kit 6, and the vacuum negative pressure in the tube cavity of the cutting cutter tube 10 is finally collected at the position of the sampling groove 8, so that tissues to be cut are sucked into the sampling groove 8; the cutting knife tube 10 moves linearly, under the action of the cutting edge 14, thereby achieving the purpose of sucking negative pressure into the pathological tissue inside the sampling groove 8 to cut off, the control host 17 controls the linear driving gear 3 to move backwards, and the cutting knife tube 10 conveys the cut tissue to the sample collector 5 under the action of vacuum negative pressure suction. Simultaneously utilizing the RF coagulation effect to cut and coagulate simultaneously.
As shown in fig. 13, the front end of the cutter tube 10 near the cutting edge 14 is provided with a plurality of wire grooves 31, and the wire grooves 31 are uniformly and parallelly distributed on the cutter tube 10, mainly for increasing the air flow passage of the cutter tube 10. When the cutter tube 10 is convenient to cut the tissue adsorbed to the sampling groove 8, the tissue can be better adsorbed at the front end part of the cutter tube 10.
The cutting edge 14 of the cutter tube 10 is used to form a radio frequency discharge as one pole in surgery, called the surgical electrode. In surgery, a large area of sheet metal is also required to contact the patient's buttocks or thigh as one of the electrodes, called the neutral electrode. The metal plate of the neutral electrode has a large contact area with the human body and a small amount of current per unit area, so that the neutral electrode has no burning 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 shown in fig. 1 are covered by the outer cover 1, and after the components are covered by the outer cover 1, the connecting piece can be installed with the driving handle 16 into a whole, so that a doctor can conveniently grasp the 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, the inner surface and the outer surface are insulated, and can also be made of ceramic materials and hard plastics. The cutting blade tube 10 is also insulated from the inner and outer surfaces except for the cutting edge 14, for example, by spraying an insulating coating which is harmless to human body, such as polytetrafluoroethylene, nano ceramic coating, epoxy insulating coating, or other materials, and can be made of ceramic materials or hard plastics. The cutting edge 14 of the cutting knife tube 10 is used as a surgical 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 set of radio frequency coagulation cutting device is formed. Referring to fig. 12 and 13, the specific connection method is as follows:
referring to fig. 15, the position of the cutter tube 10 near the linear driving gear 3 is not coated with an insulating coating, so that the cutter tube 10 is electrically connected with the radio frequency electric connection piece 4 in the form of a conductive ring, the periphery of the radio frequency electric connection piece 4 is connected with the conductive ring 35 inside the driving handle 16, the conductive ring 35 inside the driving handle 16 is electrically connected with the control host 17, as shown in fig. 15, a circular hole 38 is arranged in the center of the radio frequency electric connection piece 4, the diameter of the circular hole 38 is as large as the outer diameter of the cutter tube 10, and the cutter tube 10 is sleeved in the circular hole. When the cutter tube 10 linearly moves forward or moves backward, the cutter tube is always kept in a sliding state with the radio frequency electric connection piece 4, and meanwhile the cutter tube 10 is guaranteed to be attached to the radio frequency electric connection piece 4. The outer tube rotating gear 2 and the straight line driving gear 3 are made of insulating materials.
The radio frequency electric connection piece 4 and the cutting knife tube 10 have another connection mode, specifically:
as shown in fig. 16, a lantern spring 39 is sleeved in the rf electrical connection member 4, the rf electrical connection member 4 is electrically connected with the cutter tube 10 through the lantern spring 39, the central contraction portion of the lantern spring 39 is attached to the cutter tube 10, and meanwhile, the lantern spring 39 has a certain elasticity, so that smooth linear reciprocating motion of the cutter tube 10 can be ensured.
The control host 17 provides a high frequency current which is conducted to the drive handle inner conductive ring 35, and the drive handle inner conductive ring 35 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 tube rotating gear 2 and the linear driving gear 3 to rotate; the driving handle 16 is connected with the control host 17 by means of a cable, and the cable contains several paths of power sources for driving the motor and leads for providing power for radio frequency coagulation.
As another embodiment, according to fig. 10 and 11
The cutting knife tube 10, the piercing knife 7 and the outer knife tube 9 are replaced by insulating materials such as ceramic materials, hard plastics and the like from stainless steel materials to realize the insulation of the assembly;
and a wire loop 15 extends in the direction of the cutting edge 14 of the cutter tube 10 to serve as a surgical electrode for the rf coagulation cutting device. There may be two cases:
in the first case, as shown in fig. 10, a wire loop 15 is extended in the direction of the cutting edge 14 of the cutting blade tube 10 of the breast biopsy exciser coagulation device as a surgical electrode of the rf coagulation device, the wire loop 15 is connected to the cutting blade tube 10 by 1 or 2 or more supporting feet 40, and the cutting blade tube 10 is entirely insulated. The conductive loop is formed by providing a wire connection electrical connector 4 inside or outside the cutter tube 10, such as by embedding conductive material, conductive silver paste pad printing, localized metallization of non-metallic material, etc.
In the second case, as shown in fig. 11, in the lumen of the cutting blade tube 10 of the breast biopsy and resection coagulation device, the added wire ring 15 is used as a surgical electrode of the rf coagulation device, and is electrically connected with the electrical connection member 4 through 1 or 2 or more wires, and specifically, the electrical connection member 4 can be formed into a conductive loop by setting wire connection inside the cutting blade tube 10, for example, by embedding conductive material, conductive silver paste pad printing, local metallization of nonmetallic material, and the like. Thereby forming a radio frequency cutting solidification effect.
The wire ring 15 is made of a metal material which has good conductivity, certain hardness and spark erosion resistance, such as a hard stainless steel wire, a tungsten wire, a thorium tungsten wire and the like.
The control host 17 provides both an energy source for driving the gear of the handle 16 to rotate and a radio frequency energy source.
The innovation point and the protection point of the invention lie in that the radio frequency cutting and solidifying technology is skillfully utilized to replace the mechanical cutting technology, and the incidence frequency solidifying and cutting device is added in the breast biopsy exciser. Engineers or other persons familiar with the business may make minor modifications in this principle, and modifications made in comparison with the above would not preclude infringement of the invention.
Claims (6)
1. The driving assembly is characterized by comprising an outer sleeve (42) connected with an indication shaft sleeve (11) and a screw transmission mechanism (41) sleeved on the inner periphery of the outer sleeve (42) and in clearance fit with each other, wherein a hollow rotating gear (2) and a linear driving gear (3) are respectively arranged at the rear ends of the outer sleeve (42) and the screw transmission mechanism (41), a driving handle (16) is controlled by a control host (17) to drive the rotating gear (2) and the linear driving gear (3) to rotate, so that the outer sleeve (42) drives an outer cutter tube (9) to rotate, and the screw transmission mechanism (41) drives the cutter tube (10) to reciprocate in the axial direction;
the rear end of the outer cutter tube (9) is connected with an indicating shaft sleeve (11), the cutter tube (10) is sleeved in the outer cutter tube (9), the cutter tube (10) comprises a tube body (37) in clearance fit with the outer cutter tube (9), the tube body (37) is sleeved in the driving assembly, and the tube body (37) is insulated from the outer cutter tube (9) and the driving assembly;
the screw rod transmission mechanism (41) comprises a threaded outer sleeve (30) rotating along with the linear driving gear (3) and a threaded inner sleeve (29) which is driven by the threaded outer sleeve (30) to rotate and linearly move along the axis of the threaded outer sleeve (30), threads are arranged on the periphery of the threaded inner sleeve (29), internal threads are arranged on the periphery of the threaded outer sleeve (30), the threaded outer sleeve (30) is sleeved on the periphery of the threaded inner sleeve (29), the threaded inner sleeve (29) is fixed on the periphery of the cutting knife tube (10), the threaded inner sleeve (29) is insulated from the cutting knife tube (10), and the threaded outer sleeve (30) is embedded on the periphery of the linear driving gear (3) and is detachably connected with the linear driving gear (3);
the outer sleeve (42) consists of a connecting piece (12) and an outer tube rotating gear shaft (13), the indicating shaft sleeve (11) and the outer tube rotating gear shaft (13) are fixedly connected through the connecting piece (12), the indicating shaft sleeve (11), the connecting piece (12) and the outer tube rotating gear shaft (13) are hollow, two annular ribs (36) are symmetrically arranged in the circumference direction of the indicating shaft sleeve (11) and the outer tube rotating gear shaft (13) and parallel to the end face of the connecting piece (12), a tongue piece (24) parallel to the central line of a hollow cavity of the indicating shaft sleeve (11) or the outer tube rotating gear shaft (13) is arranged between the annular ribs (36), two end parts of the connecting piece (12) are provided with a boss (26) lower than the middle part, annular grooves (27) and tongue grooves (25) corresponding to the tongue piece (24) are arranged on the boss (26), the edges of the boss (26) are provided with tongue grooves (27) which are clamped into the ribs (36), the connecting piece (12) is used for connecting the indicating shaft sleeve (11) and the rotating gear shaft (13) through the annular grooves (27), the tongue pieces (24) and the coaxial shafts (11) are connected together through the annular grooves (24) to realize synchronous rotation and the synchronous rotation of the outer tube (13), the tail end of the outer tube rotating gear shaft (13) is sleeved with the outer tube rotating gear (2), and the outer tube rotating gear (2) is shifted to drive the outer cutter tube (9) to synchronously do circular motion;
the screw transmission mechanism (41) further comprises a positioning shaft sleeve (28) fixed on the periphery of the cutting knife tube (10), the threaded inner sleeve (29) is sleeved on the periphery of the positioning shaft sleeve (28), the threaded inner sleeve is circumferentially fixed with the positioning shaft sleeve (28) and axially detachably connected with the positioning shaft sleeve, and the positioning shaft sleeve (28) is insulated from the cutting knife tube (10);
the utility model discloses a high-frequency electric knife device, including outer sword pipe (9), puncture sword (7), outer sword pipe (9), outer sword pipe (7) front end fixed connection puncture sword (7), outer sword pipe (9) are equipped with electrically conductive cutting edge (14) in one end, and in RF electric connection spare (4) were located to the other end cover, RF electric connection spare (4) periphery and conducting ring (35) electric connection, control host computer (17) export high-frequency current to cutting edge (14) through conducting ring (35) via body (37) or wire, body (37) pass RF electric connection spare (4) and sample collector (5) intercommunication and circumference are fixed, cutting edge (14) and constitute RF electric knife circuit with the neutral electrode of electric connection control host computer (17).
2. The drive assembly according to claim 1, wherein the outer periphery of the positioning sleeve (28) is provided with a circle of convex ring (43) and a positioning sleeve (44), the convex ring (43) and the positioning sleeve (44) are arranged at intervals, a positioning 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 sleeve (28), the positioning sleeve (44) is symmetrically extended with two protruding parts (45) along the radial direction outwards along the circumferential direction and is used for keeping a gap between the cutting knife tube (10) and the outer knife tube (9), the positioning sleeve (44) adopts an insulating material, one end of a threaded inner sleeve (29) close to a sampling groove (8) is provided with a plurality of L-shaped clamping claws (33) around the axis of the positioning sleeve (28), one end of the L-shaped clamping claws (33) is pointed at the axis of the threaded inner sleeve (29), the L-shaped clamping claws (33) are in interference fit with the periphery of the clamping groove (32), the L-shaped clamping claws (33) are embedded in the clamping groove (32), the positioning sleeve (28) is axially and detachably connected with the positioning sleeve (28) in a circumferential direction, the other end of the positioning sleeve (44) is parallel to the axis of the threaded inner sleeve (29) and the threaded sleeve (29) is connected with the threaded sleeve (28) in a rotating mode along with the linear sleeve (28), the periphery of the threaded inner sleeve (29) is provided with threads, the threaded outer sleeve (30) provided with internal threads is driven to rotate, and the threaded inner sleeve (29) arranged on the inner periphery of the threaded outer sleeve (30) is pushed to reciprocate along the axis of the threaded outer sleeve (30); the inner circumference of the threaded inner sleeve (29) is provided with a wire groove, the outer circumference of the positioning shaft sleeve (28) is parallel to the wire groove in a protruding way, and the rib (46) is embedded in the wire groove, so that the positioning shaft sleeve (28) is circumferentially fixed with the threaded inner sleeve (29) and axially detachably connected.
3. The drive assembly-based breast biopsy resectoscope with a radio frequency coagulation knife tube of claim 2, further comprising: sample collector (5), vacuum pipe external member (6), vacuum negative pressure host computer (18), open on outer sword pipe (9) has sampling groove (8), and cutting sword pipe (10) tail end and sample collector (5) communicate, and sample collector (5) are through vacuum pipe external member (6) and vacuum negative pressure host computer (18) intercommunication.
4. A breast biopsy excision coagulator with radio frequency coagulation knife tube as claimed in claim 3 wherein: the front end periphery of the indicating shaft sleeve (11) is provided with a raised arrow which indicates the direction of the sampling groove (8) on the outer cutter tube (9), the tube body (37) is made of conductive materials, an insulating layer is coated on the surface of the tube body (37), the front end of the tube body (37) is electrically connected with the cutting edge (14), and the rear end of the tube body (37) is electrically connected with the radio frequency electric connecting piece (4).
5. A breast biopsy excision coagulator with radio frequency coagulation knife tube as claimed in claim 3 wherein: the pipe body (37) is made of insulating materials, zhou Yifu conducting materials in the pipe body (37) form a conducting wire, the cutting edge (14) is 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) to be electrically connected with the radio-frequency electric connecting piece (4).
6. A breast biopsy excision coagulator with radio frequency coagulation knife tube as claimed in claim 3 wherein: 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 in sliding connection with the radio frequency electric connecting piece (4).
Priority Applications (1)
| 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 |
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| 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 CN111631810A (en) | 2020-09-08 |
| CN111631810B true CN111631810B (en) | 2023-04-25 |
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| CN112971865A (en) * | 2021-02-18 | 2021-06-18 | 江苏百宁盈创医疗科技有限公司 | Portable biopsy device |
| CN113413172B (en) * | 2021-05-11 | 2023-09-29 | 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 |
| SE545602C2 (en) * | 2022-04-05 | 2023-11-07 | Resitu Medical Ab | A biopsy instrument |
| CN115227385A (en) * | 2022-06-17 | 2022-10-25 | 上海修能医疗器械有限公司 | Radio frequency scalpel and system |
| CN116269532B (en) * | 2023-05-23 | 2023-08-18 | 武汉金柏威光电技术有限公司 | Quick-cutting mammary gland biopsy excision blood coagulation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193673B1 (en) * | 1998-02-20 | 2001-02-27 | United States Surgical Corporation | Biopsy instrument driver apparatus |
| US20060122535A1 (en) * | 2004-12-08 | 2006-06-08 | Wolfgang Daum | Method and device to obtain percutaneous tissue samples |
| JP6318233B2 (en) * | 2013-03-20 | 2018-04-25 | バード・ペリフェラル・バスキュラー・インコーポレーテッド | Biopsy device |
| CN203789956U (en) * | 2014-03-05 | 2014-08-27 | 中国人民解放军第二军医大学 | Multifunctional needle for soft tissue biopsy and ablation |
| CN205126401U (en) * | 2015-08-24 | 2016-04-06 | 武汉半边天医疗技术发展有限公司 | Multi -functional feed liquor formula of radio frequency attracts rotary -cut ware |
| CN105796135A (en) * | 2016-03-03 | 2016-07-27 | 上海导向医疗系统有限公司 | Vacuum-assisted mammary gland sample biopsy and rotary cutting system |
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