CN114949604A - Sacral nerve stimulation electrode fixing device - Google Patents

Abstract

The invention discloses a sacral nerve stimulation electrode fixing device, which comprises: a base; the handle assembly is connected with the base at a set angle and comprises a first side wall and a second side wall which are arranged at an interval; the electrode clamping mechanism is arranged at one end of the handle assembly, which is far away from the base, and comprises an elastic press switch arranged on the first side wall and a clamping sliding block capable of moving under the drive of the elastic press switch; a clamping space capable of containing the electrode is formed between the clamping sliding block and the second side wall, and the clamping sliding block can move towards the direction close to or far away from the second side wall under the driving of the elastic press switch so as to clamp or release the electrode. According to the electrode fixing device, after the electrode contact reaches the preset nerve target position, the electrode is clamped and fixed in an auxiliary mode through the electrode fixing device, a doctor can remove the introducer sleeve of the introducer electrode by a single person, and the operation experience is better; meanwhile, the influence of electrode displacement can be reduced, and the implantation effect of the electrode is improved.

Description

Sacral nerve stimulation electrode fixing device

Technical Field

The invention relates to the field of medical equipment, in particular to a sacral nerve stimulation electrode fixing device.

Background

The sacral nerve stimulator is an active implanted medical device, mainly comprises an implanted pulse generator and an electrode, and is commonly used for sacral nerve regulation and control to treat related diseases such as lower urinary tract dysfunction and the like. In the sacral nerve stimulation electrode implantation operation, an auxiliary tool such as an introducer sleeve is needed to implant an electrode on a specific sacral nerve, and the introducer sleeve is removed after an electrode contact point reaches a nerve target position. Because the introducer sheath and the electrode are in interference fit and the electrode is flexible in a slender structure, in the process of removing the introducer sheath, two doctors are often required to cooperate to complete the operation, namely, one hand of an operator holds the electrode in the middle of the electrode and close to the introducer sheath, the other hand of the operator slowly moves the introducer sheath along the electrode to the end of the electrode, and in order to ensure that the electrode can keep a straight state and is relatively stable, a doctor assistant is required to cooperate with one hand to hold the end of the electrode.

Without the support and clamping fixation provided by the electrode fixation tool, three hands of surgeons and doctor assistants are suspended for the above operation of removing the introducer sheath, making it difficult to secure the electrode position, and easily causing the electrode to be displaced into the body. At present, in the clinical operation of sacral nerve regulation and control at home and abroad, no special auxiliary electrode fixing tool is provided for assisting an operator to smoothly take out an introducer sheath by a single person, and the electrode is prevented from relatively moving.

Disclosure of Invention

Therefore, the present invention is directed to solve the technical problems of difficulty in removing an introducer sheath and easiness in displacement of an electrode during the removal of the introducer sheath in the electrode implantation operation in the prior art, and provides an electrode fixing device, which can clamp and fix the electrode, so that an operator can remove the introducer sheath by a single person, and the electrode is not displaced during the removal of the introducer sheath.

In order to achieve the above object, an embodiment of the present invention provides an electrode fixing device, including:

a base adapted to rest on the back of a patient to provide support;

the handle assembly is connected with the base at a set angle and comprises a first side wall and a second side wall which are arranged at an interval;

the electrode clamping mechanism is arranged at one end, far away from the base, of the handle assembly and comprises an elastic press switch arranged on the first side wall and a clamping sliding block capable of moving under the driving of the elastic press switch;

a clamping space capable of containing the electrode is formed between the clamping sliding block and the second side wall, and the clamping sliding block can move towards the direction close to or away from the second side wall under the driving of the elastic press switch so as to clamp or release the electrode.

Optionally, the clamping shoe comprises:

the clamping part is provided with a clamping surface which is parallel to the second side wall;

and the sliding connecting part is suitable for being connected with the elastic press switch and can move towards the direction close to or far away from the second side wall along a preset guide rail on the handle assembly.

Optionally, one side of the sliding connection portion is provided with a slide rail groove, the preset guide rail is a guide rib arranged on the handle assembly corresponding to the slide rail groove, and the extending direction of the guide rib is parallel to the moving direction of the clamping slider.

Optionally, the resilient push switch comprises:

the pressing piece comprises a pressing end positioned outside the first side wall and a connecting end which is suitable for extending into the first side wall and is connected with the clamping sliding block;

the elastic resetting piece is arranged between the pressing piece and the first side wall and is suitable for applying force to the pressing piece to move in the direction away from the second side wall.

Optionally, the clamping portion is a clamping plate arranged in parallel with the second side wall, the sliding connection portion includes a connection portion and a sliding portion, and the connection portion is connected between the clamping plate and the sliding portion;

the connecting portion are plates with two bent ends, the two ends of each plate are connected with the clamping plates, a limiting space is formed between the middle of each plate and each clamping plate, and the connecting end of each pressing piece stretches into and is limited in the limiting space in a clamping mode.

Optionally, a position, corresponding to the clamping portion, of the second side wall is provided with a limiting protrusion structure, and a height of the limiting protrusion structure, which is protruded relative to the second side wall, is slightly smaller than a diameter of the electrode.

Optionally, the limiting protrusion structure comprises a first limiting protrusion and a second limiting protrusion which are arranged at intervals along the length direction of the second side wall, the second side wall is provided with a clamping fitting surface matched with the clamping surface in shape and size, and the first limiting protrusion and the second limiting protrusion are distributed at two ends of the clamping fitting surface.

Optionally, the handle assembly includes a front handle shell and a rear handle shell, a cavity is provided in the rear handle shell, and the front handle shell is fastened to the rear handle shell to form an accommodating chamber capable of accommodating and limiting the clamping slider;

the handle rear shell comprises a first side wall, a second side wall and a third side wall connected between the first side wall and the second side wall, and the third side wall and the handle front shell are oppositely arranged and are respectively provided with an avoiding opening suitable for a power supply electrode to pass through.

Optionally, a connecting seat for mounting the handle assembly is arranged on the base, and the handle assembly is connected to the connecting seat through a bolt assembly;

the bolt assembly comprises an adjusting bolt and a fastening nut, wherein the adjusting bolt is suitable for being connected and fixed with the handle assembly, and the fastening nut is used for fixing the handle assembly.

Optionally, the base comprises:

the top surface of the base upper shell is connected with the bottom end of the handle component;

the base inferior valve, the big cambered surface of bottom surface for the human back curved surface of fit, the base inferior valve with the periphery border of base epitheca passes through joint structure detachably block to be connected, and inside is formed with the cavity structures.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

1. the electrode clamping mechanism of the electrode fixing device is used for clamping and fixing the electrode, the handle is used for supporting the object holding hand of a doctor, and the electrode fixing device can provide a relatively stable relation among the object holding hand of the doctor, the electrode and the back of a patient. In the removal process of the introducer sheath, one object holding hand of an operator clamps and fixes the electrode by pressing the elastic press switch of the electrode fixing device, and the other operation hand takes out the introducer sheath, so that the operation process is convenient and rapid, can be completed by one person, and is favorable for improving the operation experience of the doctor; meanwhile, the influence of the electrode to the internal displacement can be reduced, and the implantation effect of the electrode is improved.

2. The limiting bulge structure is arranged on the second side wall corresponding to the clamping part, and the height of the limiting bulge is slightly smaller than the diameter of the electrode, so that the electrode can be prevented from being damaged due to excessive clamping, and the limiting protection effect is achieved; in addition, through the first spacing arch and the second spacing arch that set up along second lateral wall length direction interval, make the electrode is in between first spacing arch and the second spacing arch, and when can avoiding setting up single spacing arch, the electrode can be extruded to clamping face slope butt on this spacing arch, and the protectiveness is better, and is safer.

3. Two sliding rail grooves are formed in the bottom of the sliding connection portion on the clamping sliding block and correspond to the two sliding rail grooves, two guiding ribs are arranged on the handle assembly and serve as preset guide rails, the clamping sliding block is made to follow the preset guide rails to move towards or away from the second side wall, and the sliding design of the double-rail grooves improves the movement stability of the clamping sliding block.

4. The concave cavity is formed in the handle rear shell, the handle front shell is buckled on the handle rear shell to form an accommodating cavity capable of accommodating and limiting the clamping slide block, and the clamping slide block is limited, so that the stability of the clamping slide block is improved, the clamping slide block is prevented from being exposed, rusting is prevented, and the clamping slide block is attractive; meanwhile, due to the buckling installation design of the front handle shell and the rear handle shell, the installation and the disassembly are convenient.

5. The third side wall of the handle rear shell and the handle front shell arranged opposite to the third side wall are respectively provided with the avoidance openings so that the power supply electrode can penetrate through the avoidance openings, and the interference of the handle front shell and the handle rear shell to the electrode during clamping is prevented.

6. Connect handle components through bolt assembly on the connecting seat of base, when conveniently dismantling and installing handle components, also conveniently adjust handle components's angle, the doctor can adjust bolt assembly as required with the angle between adjustment handle components and the base before the operation to adapt to and fix the electrode of different angles better.

7. The bottom surface of the lower shell of the base is a large arc surface which is matched with the curved surface of the back of a human body, and the lower shell of the base is placed on the back of a patient to provide a relatively stable supporting surface; simultaneously, the base inferior valve with the periphery border of base passes through joint structure detachably block and connects, and inside is formed with cavity structures, and cavity structures can reduce the weight of base to alleviate the pressure to patient's back, promote patient's treatment and experience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of an electrode fixing device for fixing an electrode mounted on the back of a patient according to an embodiment of the present invention.

Fig. 2 is a front view of an electrode fixing apparatus in an embodiment of the present invention.

Fig. 3 is a side view of an electrode holding apparatus in an embodiment of the present invention.

FIG. 4 is a top view of an electrode mounting apparatus in an embodiment of the invention.

Fig. 5 is a schematic structural view of the electrode fixing device in the embodiment of the present invention in a state of fixing but not clamping the electrode.

Fig. 6 is a schematic structural view of the electrode fixing device in the embodiment of the present invention in a state of clamping the electrode.

Fig. 7 is an enlarged schematic view of the limiting protrusion structure of fig. 6 for protecting the electrode in the embodiment of the present invention.

Fig. 8 is an exploded view of the structure of an electrode fixing device in an embodiment of the present invention.

Fig. 9 is a schematic structural view of a handle assembly in an embodiment of the present invention.

FIG. 10 is a schematic view of the assembly of the handle assembly and the electrode clamping mechanism in an embodiment of the present invention.

Fig. 11 is a sectional view taken along the line a-a of the electrode fixing device of fig. 10 according to an embodiment of the present invention.

FIG. 12 is a diagram of a clamping slider according to an embodiment of the present invention.

Fig. 13 is a front view of a clamping shoe in an embodiment of the invention.

Fig. 14 is a sectional view taken along line B-B of the electrode fixing device of fig. 10 when the elastic push switch is not pushed according to the embodiment of the present invention.

Fig. 15 is a sectional view taken along line B-B of the electrode fixing device of fig. 10 when the elastic push switch is pushed in accordance with the embodiment of the present invention.

FIG. 16 is an isometric top view of a base top shell in an embodiment of the invention.

Fig. 17 is an isometric bottom view of the upper housing of the base in an embodiment of the invention.

FIG. 18 is an isometric top view of a lower base shell in an embodiment of the invention.

Fig. 19 is an axial bottom view of the lower base shell in an embodiment of the present invention.

Description of reference numerals:

100. an electrode fixing device;

1. a base; 11. a connecting seat; 12. a base upper shell; 13. a base lower shell;

2. a handle assembly; 21. a first side wall; 211. profiling structure; 22. a second side wall; 23. a guide rib; 24. a limiting bulge structure; 241. a first limit projection; 242. a second limit bulge; 25. a handle front shell; 26. a handle rear shell; 261. a third side wall; 262. avoiding the mouth; 27. installing a groove;

3. an electrode clamping mechanism; 31. an elastic push switch; 311. a pressing member; 3111. a pressing end; 3112. a connecting end; 312. an elastic reset member; 313. a limit nut; 32. clamping the sliding block; 321. a clamping portion; 322. a sliding connection portion; 3221. a connecting portion; 3222. a sliding part; 33. a slide rail groove;

4. a bolt assembly; 41. adjusting the bolt; 42. fastening a nut;

200. an electrode;

300. an introducer sheath.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 19, an embodiment of the present invention provides an electrode fixing apparatus 100, and the electrode fixing apparatus 100 includes a base 1, a handle assembly 2, and an electrode holding mechanism 3.

In particular, the base 1 is adapted to be placed on the back of a patient to provide support; the handle component 2 is connected with the base 1 at a set angle, and the handle component 2 comprises a first side wall 21 and a second side wall 22 which are oppositely arranged at intervals.

Further, the electrode clamping mechanism 3 is arranged at one end of the handle assembly 2 far away from the base 1, and the electrode clamping mechanism 3 comprises an elastic press switch 31 arranged on the first side wall 21 and a clamping slide block 32 capable of moving under the driving of the elastic press switch 31; a clamping space for accommodating the electrode 200 is formed between the clamping slider 32 and the second side wall 22, and the clamping slider 32 can move towards or away from the second side wall 22 under the driving of the elastic press switch 31 to clamp or release the electrode 200.

By the design, the electrode clamping mechanism 3 of the electrode fixing device 100 is used for clamping and fixing the electrode 200, the handle is used for providing support for a doctor holding hand, and the electrode fixing device 100 can provide a relatively stable relation among the doctor holding hand, the electrode 200 and the back of a patient. In the process of removing the introducer sheath 300, one holding hand of an operator presses the elastic press switch 31 of the electrode fixing device 100, and the other operating hand takes out the introducer sheath 300, so that the operation process is convenient and rapid, can be completed by one person, and is beneficial to improving the operation experience of the operator; meanwhile, the influence of the displacement of the electrode 200 into the body can be reduced, and the implantation effect of the electrode 200 is improved.

In the present embodiment, the clamping slider 32 includes a clamping portion 321 and a sliding connection portion 322.

Specifically, the clamping portion 321 has a clamping face disposed in parallel with the second side wall 22. The sliding connection 322 is adapted to be connected to the elastic push switch 31 and can move along a predetermined guide rail on the handle assembly 2 in a direction approaching or moving away from the second side wall 22.

Optionally, one side of the sliding connection portion 322 is provided with a sliding rail groove 33, the preset guiding rail is a guiding rib 23 disposed on the handle assembly 2 corresponding to the sliding rail groove 33, and the extending direction of the guiding rib 23 is parallel to the moving direction of the clamping slider 32.

Preferably, the number of the rail grooves 33 is plural, and the number of the corresponding guide ribs 23 is also plural, so as to improve the stability of the fitting. More preferably, in the present embodiment, there are two slide rail grooves 33 and two guide ribs 23. Through the double-track groove sliding design of the sliding connection part 322, the motion stability of the clamping slide block 32 is improved. Of course, the number of the slide rail slots 33 and the corresponding guide ribs 23 can be adjusted by those skilled in the art according to the actual situation, and the embodiment is not limited thereto.

In the present embodiment, the elastic pressing switch 31 includes a pressing piece 311 and an elastic restoring piece 312.

Specifically, the pressing piece 311 includes a pressing end 3111 located outside the first side wall 21 and a connection end 3112 adapted to extend into the first side wall 21 to connect with the clamping slider 32.

Further, an elastic restoring member 312 is provided between the pressing member 311 and the first side wall 21, the elastic restoring member 312 being adapted to apply a force to the pressing member 311 moving in a direction away from the second side wall 22.

Optionally, the first sidewall 21 is provided with a mounting recess 27 adapted to mount the elastic push switch 31, and the elastic restoring member 312 is disposed between an inner wall of the mounting recess 27 and the push end 3111.

Optionally, the first sidewall 21 is recessed toward the second sidewall 22 to form a mounting groove 27, and a mounting through hole into which the connecting end 3112 of the pressing member 311 can extend is formed in a bottom wall of the mounting groove 27.

Preferably, the pressing piece 311 is a pressing bolt having a set length, and the mounting groove 27 is a cylindrical groove.

Alternatively, the elastic restoring member 312 is a compression spring compressed and abutted between the inner wall of the mounting recess 27 and the inner side surface of the pressing end 3111, and is adapted to apply an elastic pushing force to the pressing member 311 moving in a direction away from the second side wall 22.

Optionally, the pressing end 3111 of the pressing piece 311 includes a limit abutting portion and a pressing portion with an increased outer diameter, wherein the limit abutting portion is located at a side close to the elastic reset piece 312, the pressing portion includes a pressing piece 311 main body with a set extension length, the limit abutting portion is an annular boss structure disposed on an end portion of the pressing piece 311 main body, and the elastic reset piece 312 is in compression abutting contact between the installation groove 27 and the limit abutting portion. The outer diameter of the limit abutting part is slightly smaller than the diameter of the installation groove 27, so that when the pressing piece 311 is pressed, the limit abutting part can move relatively in the installation groove 27 along the axis of the installation groove 27, and the movable range of the pressing piece 311 is enlarged. The pressing portion is located outside the mounting groove 27 and has an outer diameter larger than the diameter of the mounting groove 27.

Preferably, the pressing part is of a disc-shaped structure, so that pressing is facilitated.

Preferably, an arc-shaped transition chamfer is arranged between the pressing part and the limiting abutting part, so that the shearing stress of the joint can be reduced, and the service life of the pressing piece 311 is prolonged.

With such a design, by pressing the pressing piece 311, the connecting end 3112 of the pressing piece 311 drives the clamping slider 32 to move in a direction close to the second side wall 22, so as to clamp the electrode 200, and the elastic resetting piece 312 is compressed; when the pressure on the pressing member 311 is released, the elastic restoring member 312 is restored and extended under the action of its own elastic force, and drives the pressing member 311 to move and restore in a direction away from the second sidewall 22.

In the present embodiment, the clamping portion 321 is a clamping plate disposed parallel to the second sidewall 22, the sliding connection portion 322 includes a connection portion 3221 and a sliding portion 3222, and the connection portion 3221 is connected between the clamping plate and the sliding portion 3222.

Alternatively, as shown in fig. 12 to 15, the connection portion 3221 is a plate member with two bent ends, the two ends of the plate member are connected to the clamping plate, a limiting space is formed between the middle of the plate member and the clamping plate, and the connection end 3112 of the pressing member 311 extends into and is clamped and limited in the limiting space.

Optionally, an arch-shaped avoiding groove is formed in a position, corresponding to the mounting through hole in the bottom wall of the mounting groove 27, of the lower edge of the plate, the diameter of the arch-shaped avoiding groove is slightly larger than that of the connecting end 3112 of the pressing piece 311, and the connecting end 3112 is suitable for penetrating through the inner wall of the mounting groove 27 and the arch-shaped avoiding groove in the plate and extending into the limiting space.

Optionally, as shown in fig. 12, 13, and 14, at least the connection end 3112 of the pressing member 311 is provided with a screw thread, and the connection end 3112 extends into the limiting space and is connected to the connection end 3112 through a limiting nut 313 arranged in the limiting space, so as to limit the pressing member 311 in the limiting space in a clamping manner. After the pressing piece 311 is connected with the limiting nut 313, the whole pressing piece is arranged in the limiting space of the connecting part 3221, and the upper half part of the limiting nut 313 is clamped and limited on the inner side surface of the connecting part 3221 and is suitable for limiting connection of the pressing piece 311.

As shown in fig. 12, 13, and 15, when the pressing piece 311 is pressed, the pressing piece 311 drives the stopper nut 313 to move in a direction approaching the clamping portion 321, and presses against the clamping portion 321, so as to push the clamping portion 321 to move in a direction approaching the second sidewall 22, and clamp the electrode 200. As shown in fig. 14, when the pressing element 311 is released, the pressing element 311 and the limiting nut 313 are driven by the elastic restoring element 312 to move in a direction away from the clamping portion 321, and the limiting nut 313 is clamped and limited on the connecting portion 3221, so that the clamping portion 321 can be automatically pulled to move in a direction away from the second sidewall 22 under the action of the elastic restoring element 312, and the electrode 200 is released.

So design, the link 3112 through the pressing piece 311 is connected with sliding connection portion 322, and the accessible is pressed or is released the pressing end 3111 of pressing piece 311 and is made the link 3112 drive centre gripping slider 32 be close to or keep away from second lateral wall 22, and pressing piece 311 is connected with sliding connection portion 322, spacing stable, convenient operation.

Preferably, in this embodiment, the pressing member 311 is provided with an arched avoiding groove at the lower edge of the plate, instead of providing a circumferentially closed through hole or avoiding groove structure on the plate, the arched avoiding groove facilitates installation and disassembly of the limiting nut 313 in the limiting space by adopting a non-closed design, thereby facilitating assembly or disassembly of the pressing member 311 and the clamping slider 32.

Alternatively, the sliding portion 3222 includes a slider main body disposed in an "n" shape, the slider main body includes two opposing slider side walls, the slider side walls have a set thickness, an arched rail groove 33 is disposed on a bottom end surface of the slider side walls, and an extending direction of the rail groove 33 is parallel to a moving direction of the clamping slider 32.

Optionally, one end surface of the slider body near the second side wall 22 is connected to the connecting portion 3221, and the other end surface is adapted to abut against the inner side of the first side wall 21 to limit the position of the clamping slider 32.

Preferably, the peripheral edge part of the other side terminal surface of slider main part forms arched door shape curb plate to increase and the first lateral wall 21 support the area, improved spacing stability.

Preferably, the first sidewall 21 is partially swaged to form an inwardly concave swaged structure 211 adjacent to the second sidewall 22, the inner side of the swaged structure 211 forms the mounting groove 27, and the inner diameter of the "n" shaped door opening of the slider body is larger than the outer diameter of the swaged structure 211 to prevent the swaged structure 211 from interfering with the sliding portion 3222 when the sliding portion 3222 moves.

In this embodiment, a position of the second sidewall 22 corresponding to the clamping portion 321 is provided with a limiting protrusion structure 24, and a protruding height of the limiting protrusion structure 24 relative to the second sidewall 22 is slightly smaller than a diameter of the electrode 200.

Through the spacing protruding structure 24 that sets up, through pressing down elasticity push switch 31 when the doctor, drive electrode fixture 3's clamping part 321 is close to second lateral wall 22 with the clamp electrode 200, increases the clamp force to electrode 200 through the increase pressing force, until the clamping face contact of clamping part 321 and lean on spacing protruding structure 24, can not increase the clamp force again this moment to can prevent that electrode 200 from being excessively centre gripping and taking place to damage, play the effect of spacing protection.

Optionally, the position-limiting protrusion structure 24 includes a first position-limiting protrusion 241 and a second position-limiting protrusion 242 spaced apart along the length direction of the second side wall 22, the second side wall 22 has a clamping mating surface adapted to the shape and size of the clamping surface, and the first position-limiting protrusion 241 and the second position-limiting protrusion 242 are distributed at two ends of the clamping mating surface. Through the first spacing arch 241 and the second spacing arch 242 that set up along second lateral wall 22 length direction interval for electrode 200 is in between first spacing arch 241 and the second spacing arch 242, and when can avoiding setting up single spacing arch, the clamping face slope butt can extrude electrode 200 on this spacing arch, and the protectiveness is better, and is safer.

Preferably, the first limiting protrusion 241 and the second limiting protrusion 242 are set to have the same protrusion height, so as to ensure the uniformity of the force.

The first limiting protrusion 241 and the second limiting protrusion 242 are provided with the same protrusion height, so that the clamping surface and the second side wall 22 can be always kept in a parallel state when the clamping surface is abutted to the limiting protrusions, the first limiting protrusion 241 and the second limiting protrusion 242 bear the pressure from the clamping part 321 together, and the uniformity of stress is guaranteed.

Optionally, the first limiting protrusion 241 is a flange structure formed by bending and extending the upper edge of the second sidewall 22 to a direction close to the first sidewall 21, the second limiting protrusion 242 is an elongated rib disposed on the inner side surface of the second sidewall 22, and the length of the elongated rib is adapted to the width of the second sidewall 22.

Optionally, the first and second retention protrusions 241, 242 are integrally formed with the second sidewall 22.

In the present embodiment, the handle assembly 2 includes a handle front shell 25 and a handle rear shell 26.

Specifically, a concave cavity is formed in the handle rear shell 26, and the handle front shell 25 is buckled on the handle rear shell 26 to form an accommodating chamber for accommodating the limiting clamping slide block 32.

By the design, the concave cavity is formed in the handle rear shell 26, the handle front shell 25 is buckled on the handle rear shell 26 to form an accommodating cavity capable of accommodating the limiting clamping slide block 32, the clamping slide block 32 is limited, the stability of the clamping slide block 32 is improved, and the clamping slide block 32 is prevented from being exposed; meanwhile, due to the buckling installation design of the front handle shell 25 and the rear handle shell 26, the installation and the disassembly are convenient.

Further, the handle rear case 26 includes a first side wall 21 and a second side wall 22, and a third side wall 261 connected between the first side wall 21 and the second side wall 22, and the third side wall 261 is disposed opposite to the handle front case 25 and is respectively provided with escape openings 262 adapted to pass the electrodes 200 therethrough.

Optionally, the avoiding opening 262 is an elongated opening formed in the third sidewall 261 and the front handle shell 25 and close to the second sidewall 22, and the width of the avoiding opening 262 is larger than the diameter of the electrode 200. By such a design, the electrode 200 is provided with the avoidance openings 262 on the third side wall 261 of the handle rear case 26 and the handle front case 25 disposed opposite thereto, respectively, so that the interference of the handle front case 25 and the handle rear case 26 with the electrode 200 during clamping is prevented.

Alternatively, as shown in fig. 10 to 13, in the present embodiment, the side of the clamping slider 32 provided with the rail groove 33 faces the third side wall 261, the third side wall 261 is provided with the guide rib 23, and the extending direction of the guide rib 23 is parallel to the width direction of the third side wall 261.

Optionally, the handle rear shell 26 is provided with reinforcing ribs at intervals, so that the strength and rigidity of the handle assembly 2 can be improved, the handle assembly 2 is not easy to deform or damage, and the service life of the handle assembly 2 is prolonged.

Alternatively, two guide ribs 23 are provided on the third side wall 261 of the handle rear case 26 at a set interval and correspond to the two slide rail grooves 33 on the slide coupling portion 322 one by one, and by extending the guide ribs 23 on the third side wall 261 of the handle rear case 26, the stability of the guide ribs 23 and the movement stability of the clamping slider 32 are enhanced.

In this embodiment, the base 1 is provided with a connecting seat 11 for installing the handle assembly 2, and the handle assembly 2 is rotatably connected to the connecting seat 11 through a bolt assembly 4; the bolt assembly 4 comprises an adjusting bolt 41 which is suitable for being connected and fixed with the handle assembly 2 and a fastening nut 42 for fixing the handle assembly 2.

Optionally, the connecting seat 11 includes a first connecting side wall and a second connecting side wall which are oppositely arranged, the lower end portion of the handle assembly 2 is arranged between the first connecting side wall and the second connecting side wall, the first connecting side wall and the second connecting side wall and the handle assembly 2 are correspondingly provided with connecting holes, the adjusting bolt 41 sequentially penetrates through the connecting seat 11 and the connecting holes on the handle assembly 2, and the connecting seat 11 is clamped and fixed by screwing the adjusting bolt 41 and the fixing nut, so that the handle assembly 2 is fixed on the connecting seat 11.

By relatively rotating the loosening adjusting bolt 41 and the fastening nut 42 in opposite directions, the clamping force of the connecting seat 11 on the handle assembly 2 is loosened, and at the moment, the angle between the handle assembly 2 and the base 1 can be adjusted; the adjustment bolt 41 and the tightening nut 42 are then tightened in the other direction in opposite directions to clamp and secure the attachment socket 11 to the handle assembly 2, achieving the securement at that angle.

Alternatively, the fastening nut 42 is a high-end knurled nut, but may be other types of nuts, and the embodiment is not limited thereto.

So design is connected handle components 2 through bolt assembly 4 on the connecting seat 11 of base 1, both conveniently dismantle and install handle components 2, the convenient adjustment again angle between handle components 2 and the base 1, the doctor can be as required adjusting bolt assembly 4 with the angle between adjustment handle components 2 and the base 1 before the operation to adapt to better and fix the electrode 200 of different angles.

Optionally, the handle assembly 2 and the base 1 are connected to form a C-shaped frame structure, which has good stability.

In the present embodiment, the base 1 includes a base upper case 12 and a base lower case 13.

Specifically, the top surface of the base upper shell 12 is connected with the bottom end of the handle assembly 2; the bottom surface of base inferior valve 13 is the big cambered surface of the human back curved surface of fit, base inferior valve 13 with the periphery border of base epitheca 12 passes through joint structure detachably block to be connected, and inside is formed with the cavity structure.

By the design, the bottom surface of the lower base shell 13 is a large arc surface which is matched with the curved surface of the back of a human body, and the lower base shell is placed on the back of a patient to provide a relatively stable supporting surface; simultaneously, base inferior valve 13 with the periphery border of base 1 passes through joint structure detachably block and connects, and inside is formed with cavity structures, and cavity structures can reduce base 1's weight to alleviate the pressure to patient's back, promote patient's treatment and experience.

Optionally, the bottom surface of the upper base shell 12 and the top surface of the lower base shell 13 are respectively provided with transverse ribs and/or longitudinal ribs. The strength of the base 1 can be increased by providing transverse ribs and/or longitudinal ribs to provide more secure support.

Alternatively, the method of operation of the physician to remove the introducer sheath 300 using the electrode fixture 100 in surgery is: firstly, the electrode fixing device 100 with the adjusted angle is stably arranged on the back of the patient, a doctor presses the electrode fixing device 100 by a holding hand to provide stable support, and meanwhile, the thumb of the holding hand elastically presses the pressing end 3111 of the switch 31 to clamp and fix the electrode 200; the physician then slowly removes the introducer sheath 300 along the electrode 200 with another manipulator, releases the push tip 3111 to release the grip on the electrode 200 if the introducer sheath 300 has insufficient clearance, adjusts the position of the electrode fixture 100 in real time, and repeats the above operations until the introducer sheath 300 is completely removed.

The electrode fixing device 100 in the embodiment of the invention can be used for supporting and clamping and fixing the stimulation electrode in an auxiliary manner in the sacral nerve stimulation electrode implantation operation, and helps an operator to realize that an introducer sheath can be taken out by a single person smoothly, and meanwhile, the electrode is prevented from being displaced greatly. In addition, it can be understood that the electrode fixing device can also be used in other scenes needing auxiliary supporting and clamping fixed electrodes; meanwhile, in other specific scenes, the electrode fixing device can also clamp other kinds of electrodes.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. An electrode holding device, comprising:

a base (1) adapted to be placed on the back of a patient to provide support;

the handle assembly (2) is connected with the base (1) at a set angle, and the handle assembly (2) comprises a first side wall (21) and a second side wall (22) which are oppositely arranged at intervals;

the electrode clamping mechanism (3) is arranged at one end, far away from the base (1), of the handle assembly (2), and the electrode clamping mechanism (3) comprises an elastic pressing switch (31) arranged on the first side wall (21) and a clamping sliding block (32) capable of moving under the driving of the elastic pressing switch (31);

a clamping space capable of containing the electrode (200) is formed between the clamping sliding block (32) and the second side wall (22), and the clamping sliding block (32) can move towards the direction close to or away from the second side wall (22) under the driving of the elastic press switch (31) to clamp or release the electrode (200).

2. The electrode fixture device according to claim 1, wherein the clamping slider (32) comprises:

a clamping portion (321), wherein the clamping portion (321) is provided with a clamping surface parallel to the second side wall (22);

the sliding connecting part (322) is suitable for being connected with the elastic press switch (31) and can move towards or away from the second side wall (22) along a preset guide rail on the handle assembly (2).

3. The electrode fixing device according to claim 2, wherein a slide groove (33) is formed at one side of the sliding connection portion (322), the predetermined guide rail is a guide rib (23) provided on the handle assembly (2) corresponding to the slide groove (33), and an extending direction of the guide rib (23) is parallel to a moving direction of the clamping slider (32).

4. The electrode fixing device according to claim 2, wherein the elastic push switch (31) comprises:

the pressing piece (311) comprises a pressing end (3111) positioned outside the first side wall (21) and a connecting end (3112) suitable for extending into the first side wall (21) and connected with the clamping slide block (32);

an elastic return member (312) disposed between the pressing member (311) and the first sidewall (21), the elastic return member (312) being adapted to apply a force to the pressing member (311) moving in a direction away from the second sidewall (22).

5. The electrode fixing device according to claim 4, wherein the clamping portion (321) is a clamping plate disposed in parallel with the second sidewall (22), the sliding connection portion (322) comprises a connection portion (3221) and a sliding portion (3222), and the connection portion (3221) is connected between the clamping plate and the sliding portion (3222);

the connecting part (3221) is a plate with two bent ends, the two ends of the plate are connected with the clamping plate, a limiting space is formed between the middle of the plate and the clamping plate, and the connecting end (3112) of the pressing part (311) extends into the limiting space and is limited in the limiting space in a clamped manner.

6. The electrode fixing device according to claim 2, wherein a position of the second side wall (22) corresponding to the clamping part (321) is provided with a limiting convex structure (24), and the height of the limiting convex structure (24) relative to the second side wall (22) is smaller than the diameter of the electrode (200).

7. The electrode fixing device according to claim 6, wherein the limiting protrusion structure (24) comprises a first limiting protrusion (241) and a second limiting protrusion (242) which are arranged at intervals along the length direction of the second side wall (22), the second side wall (22) is provided with a clamping matching surface which is matched with the clamping surface in shape and size, and the first limiting protrusion (241) and the second limiting protrusion (242) are distributed at two ends of the clamping matching surface.

8. The electrode fixing device according to claim 7, characterized in that the handle assembly (2) comprises a front handle shell (25) and a rear handle shell (26), wherein a cavity is arranged in the rear handle shell (26), the front handle shell (25) is buckled on the rear handle shell (26) to form a containing chamber for containing the limiting slide block (32);

handle backshell (26) include first lateral wall (21) and second lateral wall (22) and connect third lateral wall (261) between first lateral wall (21) and second lateral wall (22), third lateral wall (261) with before the handle shell (25) set up relatively and are equipped with respectively and are suitable for avoiding that power supply pole (200) pass mouthful (262).

9. The electrode fixing device according to claim 8, wherein the base (1) is provided with a connecting seat (11) for mounting the handle assembly (2), and the handle assembly (2) is connected to the connecting seat (11) through a bolt assembly (4);

the bolt assembly (4) comprises an adjusting bolt (41) which is suitable for being connected and fixed with the handle assembly (2) and a fastening nut (42) for fixing the handle assembly (2).

10. The electrode fixture according to any one of claims 1-9, wherein the base (1) comprises:

a base upper shell (12) with a top surface connected with the bottom end of the handle component (2);

base inferior valve (13), the big cambered surface of bottom surface for the human back curved surface of fit, base inferior valve (13) with the periphery border of base epitheca (12) passes through joint structure detachably block and connects, and inside is formed with the cavity structures.

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