CN111067598A - Radio frequency electric wave puncture needle - Google Patents
Radio frequency electric wave puncture needle Download PDFInfo
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- CN111067598A CN111067598A CN201911313658.7A CN201911313658A CN111067598A CN 111067598 A CN111067598 A CN 111067598A CN 201911313658 A CN201911313658 A CN 201911313658A CN 111067598 A CN111067598 A CN 111067598A
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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
- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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Abstract
The invention discloses a radio frequency electric wave puncture needle, when a knife shell is slightly pressed downwards aiming at a skin incision, skin resistance pushes the knife shell to compress an elastic movable mechanism, a knife body extends out of the knife shell, a second end of a first electrode body is contacted with a second end of a second electrode body to generate a first control instruction, and a controller controls a radio frequency electric wave generator to emit radio frequency electric waves through the knife body to melt skin cells; when the knife body completely cuts the skin and enters the body, the elastic movable mechanism enables the knife shell to move towards the direction far away from the first electrode body and the second electrode body due to the thrust generated by compression deformation, so that the second end of the first electrode body is separated from the second end of the second electrode body to generate a second control instruction, and the controller controls the radio-frequency electric wave generator to stop transmitting radio-frequency electric waves. Therefore, the skin puncture can be carried out by only pressing the skin with small force, not only can the precise puncture be realized, but also the tissue and the blood vessel can be prevented from being damaged.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a radio frequency electric wave puncture needle.
Background
In the current minimally invasive surgery, the most important tool is a puncture needle, the puncture needle is used for puncturing the abdominal wall and establishing a channel between the outside and the abdominal cavity, and then other surgical instruments can enter the body of a patient through the channel to perform surgical operation. The puncture outfit mainly comprises a puncture sleeve and a puncture needle, wherein the puncture needle is inserted into the puncture sleeve when in use, then the rear end of the puncture needle is held by hands to exert force, and the tip part close to the front end of the puncture needle extrudes skin tissues to enter into an abdominal cavity.
Puncture needles available on the market today can be classified into a non-knife type and a knife type. The knife-free puncture needle is a plastic blade, and is cut by squeezing tissue, so that the tissue is less damaged, but the tough part is too blunt, and the puncture needle can be successfully punctured by large force. The knife-type puncture needle is a stainless steel blade, and the puncture needle enters the abdominal cavity by cutting off tissues during puncture, though the puncture is more labor-saving than a non-knife type puncture, the puncture force is not easy to grasp because the tough part is too sharp, and the problems of hole hernia, fascia, visceral injury and the like can be caused during puncture.
Disclosure of Invention
The invention aims to provide a radio frequency electric wave puncture needle, which solves the problems that the existing knife-free puncture needle is labor-consuming in puncture, the puncture strength of the knife-carrying puncture needle is not easy to control, and the puncture may cause hole hernia, fascia and organ injury.
According to an embodiment of the invention, a radio frequency electric wave puncture needle is provided, which comprises a radio frequency knife, an electrode mechanism and an elastic movable mechanism;
the radio frequency knife comprises a knife body and a hollow knife shell, wherein the knife body is positioned in the knife shell; the elastic movable mechanism is connected with one end of the knife shell;
the electrode mechanism comprises a base, and a first electrode body, a second electrode body and a third electrode body which are arranged at intervals are arranged on the base in a penetrating mode; the first end of the first electrode body and the first end of the second electrode body are respectively used for being connected with a controller, the first end of the third electrode body is connected with the cutter body, and the second end of the third electrode body is used for being connected with a radio-frequency wave generator;
the knife shell can compress the elastic movable mechanism to enable the knife body to extend out of the knife shell, and the second end of the first electrode body is in contact with the second end of the second electrode body, so that the controller obtains a first control instruction to control the radio-frequency electric wave generator to emit radio-frequency electric waves through the knife body; the elastic mechanism can push the knife shell to move towards a direction far away from the first electrode body and the second electrode body, so that the second end of the first electrode body is separated from the second end of the second electrode body, the controller obtains a second control instruction, and the radio-frequency electric wave generator is controlled to stop transmitting radio-frequency electric waves.
Specifically, the elastic moving mechanism comprises a shell and an elastic component arranged in the shell;
the top end of the outer shell is connected with the base, one end of the knife shell extends into the outer shell from an opening at the bottom of the outer shell and is connected with the elastic component, a trigger part is arranged on the peripheral wall of the elastic component, the second end of the first electrode body and the second end of the second electrode body extend into the shell, and the trigger part can move under the driving of the elastic component to enable the second end of the first electrode body and the second end of the second electrode body to be in contact with or separated from each other.
Specifically, the elastic component comprises a hollow first limiting part, a hollow second limiting part and a hollow elastic part; the first limiting part is connected with the second limiting part through the elastic piece, the first limiting part is abutted against the base, the second limiting part is abutted against the bottom wall of the shell, and the triggering part is arranged on the outer peripheral wall of the second limiting part;
one end of the cutter shell extending into the shell is connected with the second limiting part; the cutter body in the cutter shell sequentially penetrates through the second limiting part, the elastic part and the first limiting part and then is connected with the second end of the third electrode body.
Specifically, be equipped with the first portion of preventing changeing in first spacing portion, the spacing portion of second be equipped with the first portion of preventing changeing the second of looks adaptation prevents changeing, the first portion of preventing changeing is prevented with the second and is prevented that the cooperation of changeing the portion mutually can prevent that first spacing portion and the spacing portion of second from producing relative rotation in circumference.
Specifically, the first electrode body comprises a first switch pin and a conductive elastic sheet connected with the first switch pin, one end of the first switch pin, which is far away from the conductive elastic sheet, is a first end of the first electrode body, and one end of the conductive elastic sheet, which is far away from the first switch pin, is a second end of the first electrode body;
the second electrode body comprises a second switch contact pin and a conductor connected with the second switch contact pin, one end of the second switch contact pin, which is far away from the conductor, is a first end of the second electrode body, and one end of the conductor, which is far away from the second switch contact pin, is a second end of the second electrode body;
the conductive elastic sheet and the conductive body are located in the shell, a bending portion is arranged on the conductive elastic sheet along the direction far away from the conductive body, a first recess matched with the bending portion is formed in the triggering portion, and the bending portion is located above the first recess.
Specifically, a groove is formed in the bottom end of the third electrode body, the top end of the third electrode body is a first end of the third electrode body, the inner wall of the groove is a second end of the third electrode body, and the top end of the cutter body extends into the groove; a first through hole is formed in the side wall of the groove, and a clamping part capable of moving along the side wall of the first through hole penetrates through the first through hole;
the base comprises a locking part provided with a second through hole and a cover body buckled with the locking part, a clamping groove is formed in the inner wall of the second through hole, and the bottom end of the third electrode body extends into the second through hole; an open slot is formed in the outer edge of the cover body, a raised slide fastener is arranged on the periphery of the locking part, and when the slide fastener slides in the circumferential direction, the locking part can drive the clamping groove to rotate circumferentially relative to the cover body;
a third through hole is formed in the center of the cover body, the third through hole is a full-circle through hole formed by a first arc-shaped through hole and a second arc-shaped through hole, and the radius of the first half arc-shaped through hole is larger than the curvature radius of the second arc-shaped through hole;
an outer diameter thickening part is arranged on the outer side wall of the third electrode body, a notch is formed in the outer diameter thickening part corresponding to the second circular arc-shaped through hole, the size of the part, corresponding to the notch, of the third electrode body is matched with that of the second circular arc-shaped through hole, and the size of the part, corresponding to the outer diameter thickening part, of the third electrode body is matched with that of the first circular arc-shaped through hole; when the third electrode body is assembled with the third through hole, the part of the third electrode body corresponding to the outer diameter increasing part is matched with the first circular arc-shaped through hole, and the part of the third electrode body corresponding to the notch is matched with the second circular arc-shaped through hole so as to prevent the third electrode body from rotating in the circumferential direction and moving in the axial direction relative to the cover body;
when the locking portion drives the clamping groove to rotate circumferentially relative to the cover body, the clamping groove can extrude or loosen the clamping portion, so that the clamping portion moves on the inner wall of the first channel, and the electric cutter body which is abutted into the groove is fixed or loosened.
Specifically, a stepped structure is arranged on the side wall of the groove of the third electrode body, a second recess matched with the stepped structure is arranged at the top end of the cutter body, and the stepped structure and the second recess are matched to prevent the third electrode body and the cutter body from rotating in the circumferential direction.
Specifically, the cutter body includes electric cutter arbor and sets up the electric tool bit in the electric cutter arbor bottom, the second is sunken to be set up in the top of electric cutter arbor.
Specifically, the knife shell includes cutter arbor sleeve, connecting sleeve and sheath sleeve, connecting sleeve's one end with cutter arbor muffjoint, connecting sleeve's the other end with the connection can be dismantled to the sheath sleeve.
Specifically, the connecting sleeve is provided with an exhaust hole.
The embodiment of the invention provides a radio frequency electric wave puncture needle, when a knife shell is slightly pressed downwards aiming at a skin incision, skin resistance pushes the knife shell to compress an elastic movable mechanism, a knife body extends out of the knife shell, and a second end of a first electrode body is contacted with a second end of a second electrode body to generate a first control instruction; when the knife body completely cuts the skin and enters the body, the elastic movable mechanism enables the knife shell to move towards the direction far away from the first electrode body and the second electrode body due to the thrust generated by compression deformation, so that the second end of the first electrode body is separated from the second end of the second electrode body to generate a second control instruction, and the controller obtains the second control instruction and controls the radio-frequency electric wave generator to stop transmitting radio-frequency electric waves. Therefore, the skin puncture device can puncture the skin by pressing the skin with small force, and automatically stops working after the skin is completely cut, so that not only can the precise puncture be realized, but also the tissues and blood vessels can be prevented from being damaged, and the problems of fascia injury, foramen hernia, organ injury and the like can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an overall structural view of a radio frequency electric wave puncture needle according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a perspective view of FIG. 3;
FIG. 5 is a view of the structure of the cutter body;
FIG. 6 is an enlarged view of a portion of FIG. 5;
FIG. 7 is a view showing the structure of the blade and the third electrode;
FIG. 8 is a view of the sheath sleeve;
FIG. 9 is a perspective view of FIG. 2;
FIG. 10 is a structural view of an electrode mechanism;
FIG. 11 is a top view of FIG. 10;
FIG. 12 is an exploded view of FIG. 11;
FIG. 13 is a structural view of a third electrode;
FIG. 14 is a cross-sectional view of FIG. 13;
FIG. 15 is a view showing the structure of the cover;
FIG. 16 is an assembly view of the cover and the third electrode;
fig. 17 is a schematic circuit diagram of the present invention.
Wherein, 1-electrode mechanism, 11-locking part, 111-clamping groove, 112-sliding buckle, 113-second through hole, 12-clamping part, 13-first switch pin, 14-second switch pin, 15-third electrode body, 151-ladder structure, 152-groove, 153-first through hole, 154-notch, 155-external diameter thickening part, 16-conductive spring piece, 161-bending part, 17-conductor, 18-cover body, 181-open slot, 182-first circular arc through hole, 183-second circular arc through hole, 2-elastic moving mechanism, 21-outer shell, 22-second anti-rotation part, 23-first limit part, 24-elastic piece, 25-second limit part, 26-first anti-rotation part, 27-trigger part, 271-first recess, 3-radio frequency knife, 31-electric knife bar, 311-second recess, 32-knife bar sleeve, 321-air vent, 33-connecting sleeve, 34-knife sheath sleeve, 35-electric knife head, 4-controller, 5-radio frequency electric wave generator, 6-air switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, as shown in fig. 1 and 2, there is provided a radio frequency electric wave puncture needle comprising a radio frequency knife 3, an electrode mechanism 1 and an elastic movable mechanism 2; the radio frequency knife 3 comprises a knife body and a hollow knife shell, and the knife body is positioned in the knife shell; the elastic moving mechanism 2 is connected with one end of the knife shell; the electrode mechanism 1 comprises a base, and a first electrode body, a second electrode body and a third electrode body 15 which are arranged on the base at intervals in a penetrating mode; the first end of the first electrode body and the first end of the second electrode body are respectively used for being connected with the controller 4, the first end of the third electrode body 15 is connected with the cutter body, and the second end of the third electrode body 15 is used for being connected with the radio-frequency electric wave generator; the knife shell can compress the elastic movable mechanism 2 to enable the knife body to extend out of the knife shell, and the second end of the first electrode body is in contact with the second end of the second electrode body, so that the controller 4 obtains a first control instruction to control the radio-frequency electric wave generator 5 to emit radio-frequency electric waves through the knife body; the elastic mechanism can push the knife shell to move towards the direction far away from the first electrode body and the second electrode body, so that the second end of the first electrode body is separated from the second end of the second electrode body, the controller 4 obtains a second control instruction, and the radio frequency electric wave generator 5 is controlled to stop transmitting radio frequency electric waves.
The controller 4 may be a processing device such as a notebook, a server, etc., and is not limited in this embodiment. In order to facilitate medical staff to open and close the controller 4, the controller 4 is connected with an air switch 6 arranged on the ground, and when the medical staff steps on the air switch 6, the controller 4 is electrified to work; the medical staff loosens the air switch 6 and the controller 4 is powered off and closed.
In this embodiment, before the puncture is performed, the first end of the first electrode body of the controller 4 is connected to the first end of the second electrode body, the radio-frequency electric wave generator 5 is connected to the second end of the third electrode body 15, and then the medical staff steps on the air switch 6, so that the controller 4 is powered on. When the knife shell is slightly pressed downwards aiming at the skin incision, the skin resistance pushes the knife shell to compress the elastic movable mechanism 2, so that the knife body extends out of the knife shell, the second end of the first electrode body is contacted with the second end of the second electrode body to generate a first control instruction, the controller 4 obtains the first control instruction, and the radio-frequency electric wave generator 5 is controlled to emit radio-frequency electric waves through the knife body to melt skin cells to realize puncture cutting; when the knife body completely cuts the skin and enters the body, the elastic moving mechanism 2 enables the knife shell to move towards the direction far away from the first electrode body and the second electrode body due to the thrust generated by compression deformation, so that the second end of the first electrode body is separated from the second end of the second electrode body to generate a second control instruction, the controller 4 obtains the second control instruction and controls the radio frequency electric wave generator 5 to stop transmitting radio frequency electric waves, the medical staff can release the air switch 6, and the controller 4 is powered off and closed. Therefore, the skin puncture device can puncture the skin by pressing the skin with small force, and automatically stops working after the skin is completely cut, so that not only can the precise puncture be realized, but also the tissues and blood vessels can be prevented from being damaged, and the problems of fascia injury, foramen hernia, organ injury and the like can be avoided.
In the above embodiment, as shown in fig. 3, the elastic moving mechanism 2 includes the housing 21 and the elastic member provided in the housing 21; the top and the pedestal connection of shell 21, the one end of sword shell is stretched into in the shell 21 and is connected with elastic component by the bottom opening of shell 21, is equipped with trigger part 27 on elastic component's the periphery wall, and the second end of the first electrode body and the second end of the second electrode body stretch into to the casing, and trigger part 27 can move under elastic component's drive, makes the second end of the first electrode body and the second end contact or the separation of the second electrode body.
The top end of the shell 21 and the base can be detachably connected, for example, the elastic moving mechanism 2 can be separately separated and maintained and can be repeatedly used, so that resources are saved and the cost is reduced.
Specifically, as shown in fig. 2, 3 and 4, the elastic member includes a hollow first stopper portion 23, a hollow second stopper portion 25 and a hollow elastic member 24; the first limiting part 23 is connected with the second limiting part 25 through an elastic piece 24, the first limiting part 23 is abutted with the base, the second limiting part 25 is abutted with the bottom wall of the shell 21, and the triggering part 27 is arranged on the outer peripheral wall of the second limiting part 25; one end of the cutter shell extending into the outer shell 21 is connected with the second limiting part 25; the cutter body in the cutter shell sequentially passes through the second limiting part 25, the elastic part 24 and the first limiting part 23 and then is connected with the second end of the third electrode body 15.
Wherein the elastic member 24 may be a spring. The first limiting portion 23 and the second limiting portion 25 are cavities for accommodating the elastic member 24, so that the elastic member 24 is prevented from shaking in the stretching process.
In this embodiment, when the knife housing is pressed downwards slightly in alignment with the skin incision, the skin resistance pushes the knife housing, so that the knife housing pushes the second limiting portion 25 to move towards the first limiting portion 23, and the second limiting portion 25 compresses the first spring, so that the knife housing and the knife body move relatively to each other, and the knife body can extend out of the knife housing.
In the above embodiment, as shown in fig. 3 and 4, the first rotation-preventing portion 26 is disposed on the first limiting portion 23, the second rotation-preventing portion 22 is disposed on the second limiting portion 25 and is adapted to the first rotation-preventing portion 26, and the first rotation-preventing portion 26 and the second rotation-preventing portion 22 cooperate to prevent the first limiting portion 23 and the second limiting portion 25 from rotating relative to each other in the circumferential direction.
The first rotation preventing portion 26 may be a slot structure disposed at the periphery of the first limiting portion 23, and the second rotation preventing portion 22 may be a tongue disposed at the second rotation preventing portion 22, and the tongue is at least partially inserted into the slot structure, so that the first limiting portion 23 and the second limiting portion 25 are prevented from rotating relative to each other in the circumferential direction.
In the above embodiment, the first electrode body includes the first switch pin 13 and the conductive elastic sheet 16 connected to the first switch pin 13, one end of the first switch pin 13 away from the conductive elastic sheet 16 is a first end of the first electrode body, and one end of the conductive elastic sheet 16 away from the first switch pin 13 is a second end of the first electrode body; the second electrode body comprises a second switch pin 14 and a conductor 17 connected with the second switch pin 14, one end of the second switch pin 14 far away from the conductor 17 is a first end of the second electrode body, and one end of the conductor 17 far away from the second switch pin 14 is a second end of the second electrode body; the conductive elastic sheet 16 and the conductor 17 are located in the housing 21, a bending portion 161 is arranged on the conductive elastic sheet 16 along a direction away from the conductor 17, the trigger portion 27 is provided with a first recess 271 matched with the bending portion 161, and the bending portion 161 is located above the first recess 271.
In this embodiment, when the knife housing is pressed downwards slightly in alignment with the skin incision, the skin resistance pushes the knife housing, so that the knife housing pushes the second limiting portion 25 to compress the elastic member 24 and then move towards the first limiting portion 23, and also drives the triggering portion 27 to move towards the direction close to the conductive elastic piece 16, so that the bending portion 161 enters the first recess 271 of the triggering portion 27, in the process that the triggering portion 27 continues to move towards the first limiting portion 23 along with the second limiting portion 25, the triggering portion 27 pushes the conductive elastic piece 16 to approach the direction of the conductive body 17, until the conductive elastic piece 16 contacts the conductive body 17 to generate a first control signal, and the knife body extends out of the knife housing. The bent portion 161 and the first recess 271 may increase a contact area between the conductive dome 16 and the trigger portion 27 to enhance stability of the trigger portion 27 pushing the bent portion 161.
In the above embodiment, as shown in fig. 10 to fig. 16, the bottom end of the third electrode body 15 is provided with a groove 152, the top end of the third electrode body 15 is the first end of the third electrode body 15, the inner wall of the groove 152 is the second end of the third electrode body 15, and the top end of the cutter body extends into the groove 152; a first through hole 153 is formed in the side wall of the groove 152, and a clamping portion 12 capable of moving along the side wall of the first through hole 153 penetrates through the first through hole 153; the base comprises a locking part 11 provided with a second through hole 113 and a cover 18 buckled with the locking part 11, the inner wall of the second through hole 113 is provided with a clamping groove 111, and the bottom end of the third electrode body 15 extends into the second through hole 113; an open slot 181 is arranged at the outer edge of the cover 18, a raised slide fastener 11 is arranged at the periphery of the locking part 11, and when the slide fastener 112 slides circumferentially, the locking part 11 can drive the clamping groove 111 to rotate circumferentially relative to the cover 18; a third through hole is formed in the center of the cover body 18, the third through hole is a full-circle through hole formed by a first circular arc-shaped through hole 182 and a second circular arc-shaped through hole 183, and the radius of the first half circular arc-shaped through hole is larger than the curvature radius of the second circular arc-shaped through hole 183; an outer diameter increasing part 155 is arranged on the outer side wall of the third electrode body 15, a notch 154 is arranged on the outer diameter increasing part 155 corresponding to the second circular arc through hole 183, the size of the part of the third electrode body 15 corresponding to the notch 154 is matched with that of the second circular arc through hole 183, and the size of the part of the third electrode body 15 corresponding to the outer diameter increasing part 155 is matched with that of the first circular arc through hole 182; when the third electrode body 15 is assembled with the third through hole, the part of the third electrode body 15 corresponding to the outer diameter increasing part is matched with the first circular arc-shaped through hole 182, and the part of the third electrode body 15 corresponding to the notch 154 is matched with the second circular arc-shaped through hole 183, so that the circumferential rotation and the axial movement of the third electrode body 15 relative to the cover 18 are prevented; when locking portion 11 drives draw-in groove 111 and 18 circumferential direction of lid relatively together, draw-in groove 111 can extrude or loosen joint portion 12 to make joint portion 12 remove at the inner wall of first passageway, thereby fixed or loosen the electrotome body of support income recess 152.
In this embodiment, when the radio frequency wave puncture needle is used, the top end of the cutter body extends into the groove 152, then the slider 112 of the locking portion 11 is rotated to drive the clamping groove 111 to circumferentially rotate relative to the cover 18 in the area defined by the open groove 181 of the cover 18, and the clamping groove 111 extrudes the clamping portion 12 to move towards the groove 152 along the inner wall of the second channel, so that the cutter body is fixed between the side wall of the groove 152 and the clamping portion 12; when the cutter body needs to be replaced, the rotary locking part 11 drives the clamping groove 111 to rotate in the circumferential direction, the clamping groove 111 inner wall does not extrude the clamping part 12, the moving space between the clamping part 12 and the groove 152 is increased, and the cutter body is released to be separated from the groove 152, so that the cutter body is detachably connected with the third electrode 15. The cutter body is convenient to replace. The clamping portion 12 may be a ball, the sidewall of the first through hole 153 has an arc-shaped structure, and the curvature radius of the arc of the sidewall of the first through hole 153 is greater than that of the ball, so as to ensure that the ball can move in the first through hole 153 and cannot be separated from the first through hole 153.
In the above embodiment, as shown in fig. 5, 6, and 7, the side wall of the groove 152 of the third electrode body 15 is provided with the stepped structure 151, the top end of the cutter body is provided with the second recess 311 adapted to the stepped structure 151, and the stepped structure 151 and the second recess 311 cooperate to prevent the third electrode body 15 and the cutter body from rotating in the circumferential direction.
The stepped structure 151 and the second recess 311 cooperate to prevent the third electrode body 15 and the cutter body from rotating in the circumferential direction, so that the third electrode body 15 and the cutter body can be limited from rotating relatively, and good circumferential rotation positioning is realized.
In the above embodiment, as shown in fig. 5, the cutter body includes the electric knife bar 31 and the electric knife head 35 disposed at the bottom of the electric knife bar 31, and the second recess 311 is disposed at the top end of the electric knife bar 31. The electric tool bit 35 can be a metal circular electric tool bit 35, and both the electric tool rod 31 and the electric tool bit 35 can be made of stainless steel, or can be made of metal tungsten or other metals which are harmless to human bodies and have good conductivity.
In the above embodiment, as shown in fig. 8 and 9, the cutter housing includes the cutter bar sleeve 32, the coupling sleeve 33, and the sheath sleeve 34, one end of the coupling sleeve 33 is coupled to the cutter bar sleeve 32, and the other end of the coupling sleeve 33 is detachably coupled to the sheath sleeve 34. Wherein, be equipped with the bayonet socket on the perisporium of connecting sleeve 33, be equipped with the elasticity jack catch on sheath sleeve 34, utilize the cooperation of bayonet socket and elasticity jack catch, realize connecting sleeve 33 and sheath sleeve 34's detachable connection.
In the above embodiment, as shown in fig. 9, the connection sleeve 33 is provided with the vent holes 321, and the vent holes 321 can exhaust smoke generated when cells are ablated.
The embodiment of the invention provides a radio frequency electric wave puncture needle, when a knife shell is slightly pressed downwards aiming at a skin incision, skin resistance pushes the knife shell to compress an elastic movable mechanism 2, a knife body extends out of the knife shell, and a second end of a first electrode body is contacted with a second end of a second electrode body to generate a first control instruction, a controller 4 obtains the first control instruction, and a radio frequency electric wave generator 5 is controlled to emit radio frequency electric waves through the knife body to ablate skin cells, so that puncture and cutting are realized; when the knife body completely cuts the skin and enters the body, the elastic movable mechanism 2 enables the knife shell to move towards the direction far away from the first electrode body and the second electrode body due to the thrust generated by compression deformation, so that the second end of the first electrode body is separated from the second end of the second electrode body to generate a second control instruction, and the controller 4 obtains the second control instruction and controls the radio-frequency electric wave generator 5 to stop transmitting radio-frequency electric waves. Therefore, the skin puncture device can puncture the skin by pressing the skin with small force, and automatically stops working after the skin is completely cut, so that not only can the precise puncture be realized, but also the tissues and blood vessels can be prevented from being damaged, and the problems of fascia injury, foramen hernia, organ injury and the like can be avoided.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A radio frequency electric wave puncture needle is characterized by comprising a radio frequency knife (3), an electrode mechanism (1) and an elastic movable mechanism (2);
the radio frequency knife (3) comprises a knife body and a hollow knife shell, and the knife body is positioned in the knife shell; the elastic movable mechanism (2) is connected with one end of the knife shell;
the electrode mechanism (1) comprises a base, and a first electrode body, a second electrode body and a third electrode body (15) which are arranged at intervals are arranged on the base in a penetrating mode; the first end of the first electrode body and the first end of the second electrode body are respectively used for being connected with a controller (4), the first end of the third electrode body (15) is connected with the cutter body, and the second end of the third electrode body (15) is used for being connected with a radio frequency electric wave generator;
the knife shell can compress the elastic movable mechanism (2) to enable the knife body to extend out of the knife shell, and the second end of the first electrode body is in contact with the second end of the second electrode body, so that the controller (4) obtains a first control instruction to control the radio-frequency electric wave generator (5) to emit radio-frequency electric waves through the knife body; the elastic mechanism can push the knife shell to move in a direction away from the first electrode body and the second electrode body, so that the second end of the first electrode body is separated from the second end of the second electrode body, the controller (4) obtains a second control instruction, and the radio-frequency electric wave generator (5) is controlled to stop transmitting radio-frequency electric waves.
2. A radio-frequency wave puncture needle according to claim 1, wherein the elastic movable mechanism (2) includes a housing (21) and an elastic member provided in the housing (21);
the top end of the outer shell (21) is connected with the base, one end of the knife shell extends into the outer shell (21) from the bottom opening of the outer shell (21) and is connected with the elastic component, a trigger part (27) is arranged on the peripheral wall of the elastic component, the second end of the first electrode body and the second end of the second electrode body extend into the shell, and the trigger part (27) can be driven by the elastic component to move so that the second end of the first electrode body and the second end of the second electrode body are in contact with or separated from each other.
3. The radio-frequency wave puncture needle according to claim 2, wherein the elastic member includes a hollow first stopper portion (23), a hollow second stopper portion (25), and a hollow elastic member (24); the first limiting part (23) is connected with the second limiting part (25) through the elastic piece (24), the first limiting part (23) is abutted against the base, the second limiting part (25) is abutted against the bottom wall of the shell (21), and the triggering part (27) is arranged on the outer peripheral wall of the second limiting part (25);
one end of the cutter shell extending into the outer shell (21) is connected with the second limiting part (25); the cutter body in the cutter shell sequentially penetrates through the second limiting part (25), the elastic piece (24) and the first limiting part (23) and then is connected with the second end of the third electrode body (15).
4. The radio wave puncture needle according to claim 3, wherein the first stopper portion (23) is provided with a first rotation prevention portion (26), the second stopper portion (25) is provided with a second rotation prevention portion (22) adapted to the first rotation prevention portion (26), and the first rotation prevention portion (26) and the second rotation prevention portion (22) are engaged with each other to prevent the first stopper portion (23) and the second stopper portion (25) from rotating relative to each other in a circumferential direction.
5. A radio frequency electric wave puncture needle according to claim 2, wherein the first electrode body comprises a first switch pin (13) and a conductive elastic piece (16) connected with the first switch pin (13), one end of the first switch pin (13) far away from the conductive elastic piece (16) is a first end of the first electrode body, and one end of the conductive elastic piece (16) far away from the first switch pin (13) is a second end of the first electrode body;
the second electrode body comprises a second switch pin (14) and a conductor (17) connected with the second switch pin (14), one end of the second switch pin (14) far away from the conductor (17) is a first end of the second electrode body, and one end of the conductor (17) far away from the second switch pin (14) is a second end of the second electrode body;
the conductive elastic sheet (16) and the conductive body (17) are located in the shell (21), a bending portion (161) is arranged on the conductive elastic sheet (16) along a direction far away from the conductive body (17), a first recess (271) matched with the bending portion (161) is arranged on the trigger portion (27), and the bending portion (161) is located above the first recess (271).
6. The radio frequency wave puncture needle according to claim 1, wherein a groove (152) is provided at a bottom end of the third electrode body (15), a top end of the third electrode body (15) is a first end of the third electrode body (15), an inner wall of the groove (152) is a second end of the third electrode body (15), and a top end of the cutter body extends into the groove (152); a first through hole (153) is formed in the side wall of the groove (152), and a clamping part (12) capable of moving along the side wall of the first through hole (153) penetrates through the first through hole (153);
the base comprises a locking part (11) provided with a second through hole (113) and a cover body (18) buckled with the locking part (11), a clamping groove (111) is formed in the inner wall of the second through hole (113), and the bottom end of the third electrode body (15) extends into the second through hole (113); an open slot (181) is formed in the outer edge of the cover body (18), a raised slide fastener (112) is arranged on the periphery of the locking part (11), and when the slide fastener (112) slides in the circumferential direction, the locking part (11) can drive the clamping groove (111) to rotate in the circumferential direction relative to the cover body (18);
a third through hole is formed in the center of the cover body (18), the third through hole is a full-circle through hole formed by a first circular arc-shaped through hole (182) and a second circular arc-shaped through hole (183), and the radius of the first half circular arc-shaped through hole is larger than the curvature radius of the second circular arc-shaped through hole (183);
an outer diameter increasing part (155) is arranged on the outer side wall of the third electrode body (15), a notch (154) is arranged on the outer diameter increasing part (155) corresponding to the second circular arc-shaped through hole (183), the size of the part, corresponding to the notch (154), of the third electrode body (15) is matched with that of the second circular arc-shaped through hole (183), and the size of the part, corresponding to the outer diameter increasing part, of the third electrode body (15) is matched with that of the first circular arc-shaped through hole (182); when the third electrode body (15) is assembled with the third through hole, the part of the third electrode body (15) corresponding to the outer diameter increasing part (155) is matched with the first circular arc-shaped through hole (182), and the part of the third electrode body (15) corresponding to the notch (154) is matched with the second circular arc-shaped through hole (183) so as to prevent the third electrode body (15) from rotating in the circumferential direction and moving in the axial direction relative to the cover body (18);
when the locking portion (11) drives the clamping groove (111) to rotate circumferentially relative to the cover body (18), the clamping groove (111) can extrude or loosen the clamping portion (12) so that the clamping portion (12) can move on the inner wall of the first channel, and a cutter body abutting against the groove (152) is fixed or loosened.
7. The radio frequency wave puncture needle according to claim 6, wherein a stepped structure (151) is provided on a side wall of the groove (152) of the third electrode body (15), a second recess (311) adapted to the stepped structure (151) is provided on a top end of the cutter body, and the stepped structure (151) and the second recess (311) cooperate to prevent the third electrode body (15) and the cutter body from rotating in a circumferential direction.
8. The radio-frequency (rf) radio-wave puncture needle according to claim 1, wherein the blade body includes an electric blade bar (31) and an electric blade head (35) disposed at a bottom of the electric blade bar (31), and the second recess (311) is disposed at a tip of the electric blade bar (31).
9. The radio-frequency (rf) radio-wave puncture needle according to claim 1, wherein the cutter housing includes a cutter bar sleeve (32), a connection sleeve (33), and a sheath sleeve (34), one end of the connection sleeve (33) is connected to the cutter bar sleeve (32), and the other end of the connection sleeve (33) is detachably connected to the sheath sleeve (34).
10. A radio-frequency wave puncture needle according to claim 9, wherein the connection sleeve (33) is provided with an air vent hole (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911313658.7A CN111067598A (en) | 2019-12-19 | 2019-12-19 | Radio frequency electric wave puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911313658.7A CN111067598A (en) | 2019-12-19 | 2019-12-19 | Radio frequency electric wave puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111067598A true CN111067598A (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911313658.7A Pending CN111067598A (en) | 2019-12-19 | 2019-12-19 | Radio frequency electric wave puncture needle |
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| Country | Link |
|---|---|
| CN (1) | CN111067598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
-
2019
- 2019-12-19 CN CN201911313658.7A patent/CN111067598A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
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