Electronic circuit breaker

Abstract

The present invention discloses an electronic circuit breaker, which belongs to the technical field of medical equipment. The electronic circuit breaker includes an opening part and a handheld part. A button is provided in a button mounting hole of the handheld part, and an anti-accidental touch structure is provided on the button; the button includes a main body, and a longitudinal groove is provided in the main body so that the main body is arranged in a petal-shaped manner. The anti-accidental touch structure has a first state and a second state. In the first state and the second state, the anti-accidental touch structure is not separated from the button; when the anti-accidental touch structure is in the first state, the button is axially positioned in the button mounting hole; when the anti-accidental touch structure is in the second state, the main body of the button can be radially contracted at the longitudinal groove under the action of an external force, so that the button can be pressed and moved downward in the button mounting hole. The button in the present invention is a physical press-type button, which is simple and convenient, has a good physical touch, is easy to operate, and can prevent misoperation, avoid causing insufficient power of the electronic circuit breaker, and there is no risk of parts falling during surgery, and the surgery is highly safe.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an electronic circuit breaker. Background Art

[0002] In spinal screw rod surgery, a screw channel needs to be drilled in advance on the pedicle before the screw is implanted, and then the screw is implanted along the screw channel. Since the pedicle is on the side of the spinal canal, which contains the spinal cord and nerves, it is easy to perforate the side wall of the spinal canal when drilling with a drill bit during surgery, causing damage to the spinal cord and nerves. Therefore, during surgery, a handheld opener is generally used instead of a drill bit to drill holes in the pedicle manually, so that the hand can feel more sensitive and can better feel the opener piercing the side wall of the spinal canal to prevent the spinal canal from being pierced.

[0003] Conventional circuit openers require doctors to establish the nail track by feel, which can easily lead to misjudgment for some inexperienced doctors, especially in minimally invasive surgery. Because the patient's incision is small and the circuit opener is affected by the friction of soft tissue when opening the circuit, it is difficult to judge whether the side wall of the spinal canal has been pierced.

[0004] The emergence of a new type of electronic circuit opener has solved the above problem very well. It can provide an early warning function of cortical bone penetration during surgery and better assist doctors in completing the circuit opening part. The existing electronic circuit opener mainly includes a circuit opening part located at the front and a handheld part located at the back. Its principle is to identify the impedance value of the tip of the circuit opening part to the tissue in the body, and then detect the direction and position of the nail channel, so as to achieve the purpose of fast and accurate nailing without the help of large-scale fluoroscopic equipment.

[0005] The switches of existing electronic circuit breakers are mostly pull-tab type, which has the risk of breaking when pulled, and is easy to slip when stained with oil and blood, lacking physical touch; if physical keys (such as buttons) are used, the buttons of the electronic circuit breaker have a certain risk of accidental touch during a series of processes such as production assembly, packaging, sterilization, transportation, and preoperative preparation. That is, the button is pressed prematurely due to misoperation, causing the electronic circuit breaker to be in standby mode too early. Due to being in standby mode for a long time, the battery power will be reduced or even disappear, causing the alarm function to fail and the electronic circuit breaker to be scrapped. In order to prevent the button from being pressed prematurely due to misoperation, a safety pin or other anti-misoperation structure can also be designed on the button. However, such anti-misoperation structure has the risk of falling during surgery, which greatly affects the safety of surgery. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an electronic circuit breaker with good physical touch, capable of preventing misoperation and high surgical safety.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An electronic circuit breaker comprises an opening part at the front and a hand-held part at the rear, wherein the hand-held part is provided with a button mounting hole, wherein a button for driving an internal control switch of the electronic circuit breaker is provided in the button mounting hole, and an anti-accidental touch structure is provided on the button;

[0009] The button comprises a main body, the main body is provided with a longitudinal groove so that the main body is arranged in a petal-shaped manner, the anti-accidental touch structure has a first state and a second state, and in the first state and the second state, the anti-accidental touch structure is not separated from the button;

[0010] When the anti-accidental-touch structure is in a first state, the button is axially positioned in the button mounting hole; when the anti-accidental-touch structure is in a second state, the main body of the button can radially shrink at the longitudinal groove under the action of external force, so that the button can be pressed and moved downward in the button mounting hole.

[0011] Furthermore, a semicircular plug hole is provided on the inner end surface of one of the petals of the main body, and a D-shaped plug pin which can rotate but cannot be axially disengaged is provided in the semicircular plug hole, and the diameter of the D-shaped plug pin is equal to the sum of the radius of the semicircular plug hole and the width of the longitudinal groove;

[0012] Alternatively, a blocking pin is provided between the two petals of the main body, and the blocking pin is connected to one of the petals via a tether.

[0013] Furthermore, the anti-mistaken collision structure is a breaking piece connecting the petals of the main body, one end of the breaking piece is connected to one of the petals of the main body through a bending axis, and the other end is connected to another petal of the main body through a breaking axis;

[0014] When the breaking piece is not broken, the button is axially positioned in the button mounting hole; when the breaking piece is broken, the main body of the button can radially shrink at the longitudinal groove under the action of external force, so that the button can be pressed and moved downward in the button mounting hole.

[0015] Furthermore, the upper end surface of the main body is an inclined surface, and the breaking piece is located at the highest point of the inclined surface and is located in the same plane as the inclined surface;

[0016] And / or, the breaking piece is located directly above the main body, the outer contour of the breaking piece does not exceed the outer contour of the main body, and a bending avoidance groove is provided on the main body below the breaking piece;

[0017] and / or, the highest point of the breaking piece does not exceed the highest point of the outer surface of the tail portion of the hand-held portion;

[0018] And / or, a bending groove is provided at the connection between the breaking piece and the main body;

[0019] And / or, a notch is provided at the connecting end between the breaking piece and the breaking shaft.

[0020] Furthermore, a locking boss is provided on the outer surface of at least one petal of the main body, and when the breaking piece is not broken, the size of the button at the locking boss is larger than the size of the button mounting hole.

[0021] Furthermore, the lower surface of the locking boss is an inclined surface that slopes upward from the root to the end;

[0022] And / or, the main body is provided with chamfers at the edges of the openings of the longitudinal slots;

[0023] And / or, the main body is provided with a ball socket at the opening of the longitudinal slot near the breaking piece.

[0024] Furthermore, the button includes a plug-in fitting portion located below the main body portion, and the plug-in fitting portion and the button mounting hole are provided with mutually cooperating anti-retreat portions, and the anti-retreat portion includes an elastic baffle provided on the plug-in fitting portion and an annular boss provided below the button mounting hole and extending radially inward, and the elastic baffle can be radially elastically deformed in the button mounting hole so that the elastic baffle can expand after passing over the annular boss to prevent the button from retreating.

[0025] Furthermore, the lower end surface of the plug-in mating portion is used as a pressing platform for driving and connecting the internal control switch of the electronic circuit breaker, and the plug-in mating portion is provided with an axially extending slot, so that a column connecting the main body and the pressing platform is formed in the middle of the plug-in mating portion, and at least two elastic baffles are formed on the side of the pressing platform;

[0026] And / or, a first step is provided in the middle of the outer surface of the elastic baffle, an inclined surface is provided on the upper surface of the annular boss which is inclined downward from the root to the end, and the lower surface of the first step is an inclined surface which matches with the upper surface of the annular boss; the button has an initial installation position, in which the upper surface of the first step matches with the lower surface of the annular boss to prevent the button from withdrawing;

[0027] And / or, a second step is provided on the upper portion of the outer surface of the elastic baffle, the upper surface of the annular boss is provided with an inclined surface inclined downward from the root to the end, and the lower surface of the second step is an inclined surface matching the upper surface of the annular boss; the button has a working position after being pressed, and in the working position after being pressed, the upper surface of the second step matches the lower surface of the annular boss to prevent the button from withdrawing.

[0028] Furthermore, the open circuit portion includes a probe rod, and an adjustable nailing device is sleeved on the probe rod, wherein:

[0029] The adjustable nailing device comprises an outer sleeve and an inner sleeve slidably connected in the outer sleeve, the rear end of the outer sleeve is fixedly connected to the front end of the handheld part, the probe rod is slidably connected in the inner sleeve and the rear end of the probe rod is fixedly connected to the front end of the handheld part;

[0030] The adjustable nailer also includes a locking structure for locking the outer sleeve and the inner sleeve after the relative positions are adjusted.

[0031] Furthermore, the locking structure includes a positioning pin fixed on the inner sleeve, and a positioning groove arranged on the outer sleeve for the positioning pin to move, the positioning groove includes at least two L-shaped positioning grooves, the L-shaped positioning groove includes a vertical sliding groove extending axially along the outer sleeve and a horizontal sliding groove perpendicular to the vertical sliding groove, and the vertical sliding grooves of at least two L-shaped positioning grooves are arranged in sequence along the axial direction of the outer sleeve and are connected.

[0032] Furthermore, a ball socket is provided at the end of the transverse sliding groove, and the ball socket is located on a side of the transverse sliding groove close to the handheld portion;

[0033] And / or, the number of the positioning pins is two and they are symmetrically distributed on both sides of the inner sleeve, and the number of the positioning slots is two and they are symmetrically distributed on both sides of the outer sleeve;

[0034] And / or, the inner sleeve is sleeved with a spring for axially spreading the outer sleeve and the inner sleeve apart.

[0035] The present invention has the following beneficial effects:

[0036] The electronic circuit breaker of the present invention has a button for driving the internal control switch of the electronic circuit breaker in the button mounting hole on the hand-held part. Compared with the pull-tab type electronic circuit breaker, the present invention adopts a button to drive the internal control switch of the electronic circuit breaker. The button is a physical press-type button, which is simple and convenient, has a good physical touch, and is easy to operate. The button is provided with an anti-accidental touch structure, which is inseparable from the button in the first state and the second state, can prevent misoperation, avoid insufficient power of the electronic circuit breaker, and there is no risk of parts falling during the operation, and the operation is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the use structure of the electronic circuit breaker of the present invention;

[0038] Figure 2 It is a schematic diagram of the exploded structure of the electronic circuit breaker of the present invention;

[0039] Figure 3 Schematic diagram of the structure of the button in the electronic circuit breaker of the present invention, wherein (a) is a front view, (b) is a side view, (c) is a top view, (d) is a stereogram, and (e) is a partial enlarged view;

[0040] Figure 4 The diagram is a schematic diagram of the matching structure of the button and the button mounting hole in the electronic circuit breaker of the present invention, wherein (a) is a diagram of the initial mounting position of the button, and (b) is a diagram of the working position after the button is pressed.

[0041] Figure 5 Schematic diagram of the structure of the adjustable nailing device in the electronic circuit breaker of the present invention, wherein (a) is a front view, (b) is a cross-sectional view of the outer sleeve, and (c) is an enlarged view of the outer sleeve;

[0042] Figure 6 It is a schematic diagram of the matching structure of the probe rod and the handheld part in the electronic circuit breaker of the present invention;

[0043] Figure 7 Schematic diagram of the structure of the handheld part of the electronic circuit breaker of the present invention, wherein (a) is a diagram of the internal structure of the lower shell, and (b) is a diagram of the internal structure of the upper shell;

[0044] Figure 8 It is a structural schematic diagram of a circuit board assembly in an electronic circuit breaker of the present invention;

[0045] Fig. 9 is a schematic diagram of the structure of a probe rod in an electronic circuit breaker of the present invention, wherein a cross-sectional view of the probe rod is additionally shown;

[0046] Fig.10 FIG. 4 is a schematic structural diagram of another embodiment of the electronic circuit breaker of the present invention. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0048] The present invention provides an electronic circuit breaker, such as Figure 1-10 As shown, including the front ( Figure 1 The electronic circuit breaker is provided with an opening part 1 (in the direction indicated by the arrow in the middle) and a hand-held part 2 (which can be manufactured by injection molding and can be made of PC material) at the rear, and a button mounting hole 27 is provided on the hand-held part 2, and a button 3 for driving the internal control switch of the electronic circuit breaker is provided in the button mounting hole 27, and an anti-accidental touch structure is provided on the button 3; in specific implementation, when the button 3 is not pressed, the control switch is disconnected, and the electronic circuit breaker is in the off state, and when the button 3 is pressed, the control switch is closed, and the electronic circuit breaker is in the standby / working state;

[0049] The button 3 includes a main body 31, and a longitudinal groove 32 is provided on the main body 31 so that the main body 31 is divided into petals. The anti-accidental touch structure has a first state and a second state. In the first state and the second state, the anti-accidental touch structure is not separated from the button 3.

[0050] When the anti-accidental-touch structure is in the first state, the button 3 is axially positioned in the button mounting hole 27; when the anti-accidental-touch structure is in the second state, the main body 31 of the button 3 can radially shrink at the longitudinal groove 32 under the action of external force, so that the button 3 can be pressed and moved downward in the button mounting hole 27.

[0051] When not in use, the anti-accidental touch structure on the button 3 of the electronic circuit breaker is in a first state, at which time the button 3 is axially positioned in the button mounting hole 27, that is, the button 3 is in a locked state, that is, the button 3 cannot be pressed downward in the button mounting hole 27, which can be achieved by reasonably designing the outer dimensions of the main body 31; when in use, the handheld portion 2 of the electronic circuit breaker is held, so that the anti-accidental touch structure is in a second state, that is, the button 3 is in an unlocked state, and then the button 3 is pressed, and the main body 31 of the button 3 is elastically deformed (that is, compressed toward the middle, that is, radially contracted) at the longitudinal groove 32 (as a bending space), so that the button 3 is pressed downward in the button mounting hole 27, and the lower end of the button 3 drives the internal control switch of the electronic circuit breaker to close, and the power is turned on, and the electronic circuit breaker is in a standby state (that is, a working state). At this time, the circuit opening portion 1 of the electronic circuit breaker is connected with the hollow screw 6, and the electronic circuit breaker can be used to establish a screw channel on the patient's pedicle.

[0052] The electronic circuit breaker of the present invention has a button for driving the internal control switch of the electronic circuit breaker in the button installation hole on the handheld part. Compared with the pull-tab type electronic circuit breaker, the present invention adopts a button to drive the internal control switch of the electronic circuit breaker. The button is a physical press-type button, which is simple and convenient, has a good physical touch, and is easy to operate; the button is provided with an anti-accidental touch structure, which is not separated from the button in the first state and the second state, can prevent misoperation, avoid insufficient power of the electronic circuit breaker, and there is no risk of parts falling during the operation, and the operation is highly safe. The present invention is mainly suitable for spinal internal fixation surgery.

[0053] According to different anti-mistaken collision structures, the present invention may have the following embodiments:

[0054] Example 1

[0055] like Fig.10 As shown, a semicircular socket 30 may be provided on the inner end surface of one of the petals of the main body 31, and a D-shaped pin 5 is provided in the semicircular socket 30, which is rotatable but not axially detachable (specifically, it can be achieved by providing a snap-in structure such as an annular boss and a barb), and the diameter of the D-shaped pin 5 is equal to the sum of the radius of the semicircular socket 30 and the width of the longitudinal groove 32.

[0056] When not in use, the flat side of the D-shaped pin is located in a semicircular socket of one petal, and the distal side of the D-shaped pin exposed from the semicircular socket abuts against the other petal, so that the main body 31 of the button 3 cannot radially shrink at the longitudinal groove 32, so that the button 3 is axially positioned in the button mounting hole 27, and the button 3 is in a locked state; when it is necessary to unlock the button 3, the D-shaped pin is rotated so that the flat side of the D-shaped pin is not located in the semicircular socket, and the main body 31 of the button 3 can radially shrink at the longitudinal groove 32 under the action of external force, so that the button 3 can be pressed and moved downward in the button mounting hole 27.

[0057] Example 2 (not shown)

[0058] A blocking pin may be provided between the two petals of the main body 31, and the blocking pin is connected to one of the petals through a tether. When not in use, the blocking pin is inserted between the two petals (in the longitudinal groove 32), and the main body 31 of the button 3 cannot be radially contracted at the longitudinal groove 32, so that the button 3 is axially positioned in the button mounting hole 27, and the button 3 is in a locked state; when the button 3 needs to be unlocked, the blocking pin is pulled out, and the main body 31 of the button 3 can be radially contracted at the longitudinal groove 32 under the action of an external force, so that the button 3 can be pressed and moved downward in the button mounting hole 27.

[0059] Example 3

[0060] like Figure 3 As shown, the anti-mistaken collision structure can be a breaking piece 33 connecting the petals of the main body 31, one end of the breaking piece 33 is connected to one of the petals of the main body 31 through a bending shaft 332 (specifically, the bending shaft 332 can be integrally formed with the breaking piece 33 and is relatively thick and easy to bend but not broken), and the other end is connected to the other petal of the main body 31 through a breaking shaft 331 (specifically, the breaking shaft 331 can be integrally formed with the breaking piece 33 and is relatively thin and easy to be broken);

[0061] When the breaking piece 33 is not broken, the button 3 is axially positioned in the button mounting hole 27; when the breaking piece 33 is broken, the main body 31 of the button 3 can radially contract at the longitudinal groove 32 under the action of external force, so that the button 3 can be pressed and moved downward in the button mounting hole 27.

[0062] When not in use, the breaking piece 33 is not broken, the longitudinal groove 32 of the main body 31 of the button 3 is not in an interrupted state, and the main body 31 of the button 3 cannot radially shrink at the longitudinal groove 32, so that the button 3 is axially positioned in the button mounting hole 27, and the button 3 is in a locked state; when the button 3 needs to be unlocked, the breaking piece 33 is used to break the breaking axis 331 of the petals connecting the main body 31, and the longitudinal groove 32 of the main body 31 of the button 3 is in an interrupted state. The main body 31 of the button 3 can radially shrink at the longitudinal groove 32 under the action of external force, so that the button 3 can be pressed and moved downward in the button mounting hole 27.

[0063] like Figure 3 As shown, the breaking piece 33 can be located just above the main body 31, and the outer contour of the breaking piece 33 does not exceed the outer contour of the main body 31. A bending avoidance groove 34 is provided on the main body 31 below the breaking piece 33. At this time, the breaking piece 33 is only subjected to the left and right extrusion force and is difficult to break. It can only be broken by pressing down on the tip of its tail. This position is basically difficult to be touched during conventional transportation, which can better prevent misoperation. At the same time, after the breaking piece 33 is broken, it is stored in the bending avoidance groove 34, and its outer contour does not exceed the outer contour of the main body 31, and does not interfere with the movement of parts. The highest point of the breaking piece 33 is preferably not higher than the highest point of the outer surface of the tail of the handheld part 2. In addition, the upper end surface of the main body 31 can be an inclined surface, and the breaking piece 33 is located at the highest point of the inclined surface and is located in the same plane as the inclined surface. Such a setting can maximize the bending action path of the breaking piece 33, making the breaking shaft 331 easier to break. A bending groove 35 may be provided at the connection between the breaking piece 33 and the main body 31 to facilitate bending of the breaking piece 33. To prevent the outer contour of the breaking piece 33 from exceeding the outer contour of the main body 31, a notch 36 may be provided at the connection end between the breaking piece 33 and the breaking shaft 331.

[0064] Continue as Figure 3 As shown, in order to facilitate the axial positioning of the button 3 in the button mounting hole 27 when the breaking piece 33 is not broken, the outer surface of at least one of the petals of the main body 31 can be provided with a locking boss 37. When the breaking piece 33 is not broken, the size of the button 3 at the locking boss 37 is larger than the size of the button mounting hole 27. Due to the blocking of the locking boss 37, the button 3 cannot move downward when pressed in the button mounting hole 27; when the breaking piece 33 is broken, the locking boss 37 can be compressed toward the middle under the action of the longitudinal groove 32 along with the main body 31, so that the button 3 is pressed and moved downward in the button mounting hole 27. The lower surface of the locking boss 37 can be an inclined surface that is inclined upward from the root to the end, so as to play a guiding role in the process of pressing the button 3.

[0065] like Figure 3As shown in (c), the main body 31 may be provided with a chamfer 311 at the edge of the opening of the longitudinal groove 32; the main body 31 may be provided with a ball socket 312 at the opening of the longitudinal groove 32 near the breaking piece 33 to avoid pinching the hand after pressing the button 3.

[0066] like Figure 3-4 As shown, the button 3 may also include a plug-in fitting portion 38 located below the main body portion 31, and the plug-in fitting portion 38 and the button mounting hole 27 are provided with mutually cooperating anti-retraction portions, and the anti-retraction portion includes an elastic baffle 39 provided on the plug-in fitting portion 38 and an annular boss 28 provided below the button mounting hole 27 and extending radially inward, and the elastic baffle 39 can be radially elastically deformed in the button mounting hole 27 so that the elastic baffle 39 can expand after passing over the annular boss 28 to prevent the button 3 from withdrawing.

[0067] When in use, the bend breaking piece 33 is bent to put the button 3 in an unlocked state. During the process of pressing the button 3, the elastic baffle 39 on the plug-in mating part 38 of the button 3 is radially elastically deformed (contracted inward) in the button mounting hole 27 so that the elastic baffle 39 passes over the annular boss 28 below the button mounting hole 27. After the elastic baffle 39 passes over the annular boss 28, it expands and cooperates with the lower end surface of the annular boss 28 to prevent the button 3 from withdrawing, thereby making the button 3 a disposable button structure to avoid repeated use of the electronic circuit breaker.

[0068] The button 3 in this embodiment will not pop out after being pressed and cannot be pressed again, that is, the button 3 is a one-time key structure, which can only be pressed inward and cannot be taken out. This can avoid the repeated use of the electronic circuit breaker and reduce the risks of bacterial infection, infectious diseases, etc.

[0069] To form the elastic baffle 39, various processing methods that can be easily thought of by those skilled in the art can be used, such as machining, 3D printing, welding, etc. However, for the convenience of implementation, the present invention preferably adopts the following methods:

[0070] like Figure 3-4 As shown, the lower end surface of the plug-in mating portion 38 can be used as a pressing platform 381 for driving and connecting the internal control switch of the electronic circuit breaker (specifically, the size of the pressing platform 381 can be smaller than the size of the button mounting hole 27 to play a guiding role in the assembly process of the button 3), and the plug-in mating portion 38 is provided with an axially extending slot 382, ​​so that a column 383 connecting the main body 31 and the pressing platform 381 is formed in the middle of the plug-in mating portion 38, and at least two elastic baffles 39 are formed on the side of the pressing platform 381; multiple elastic baffles 39 can be evenly distributed on the plug-in mating portion 38. In the embodiment shown in the figure, the number of elastic baffles 39 is two and they are located on both sides of the column 383.

[0071] like Figure 4As shown in (a), when the button 3 is not pressed, in order to prevent the button 3 from withdrawing from the button mounting hole 27, a first step 391 may be provided in the middle of the outer surface of the elastic blocking piece 39, and an inclined surface inclined downward from the root to the end is provided on the upper surface of the annular boss 28 to guide the button 3 during assembly; the lower surface of the first step 391 is an inclined surface matched with the upper surface of the annular boss 28, so that the first step 391 can pass over the annular boss 28;

[0072] At this time, the button 3 has an initial installation position when it is not pressed. In the initial installation position, the upper surface of the first step 391 cooperates with the lower surface of the annular boss 28 to prevent the button 3 from withdrawing. During assembly, the button 3 is placed in the button installation hole 27 without bending the breaking piece 33 and the button 3 is pressed. The upper surface of the annular boss 28 and the lower surface of the first step 391 are slidably matched so that the first step 391 passes over the annular boss 28, and the button 3 enters the initial installation position. Due to the obstruction of the locking boss 37, the button 3 is pressed in the button installation hole 27 and cannot continue to move downward. The button 3 is in a locked state. At this time, the annular boss 28 is stuck in the slot formed between the first step 391 and the second step 392, and the assembly of the button 3 is completed.

[0073] like Figure 4 As shown in (b), after the button 3 is pressed, in order to better prevent the button 3 from withdrawing from the button mounting hole 27, the upper portion of the outer surface of the elastic blocking piece 39 may be provided with a second step 392, and the upper surface of the annular boss 28 is provided with an inclined surface that is inclined downward from the root to the end, and the lower surface of the second step 392 is an inclined surface that matches the upper surface of the annular boss 28, so that the second step 392 can pass over the annular boss 28;

[0074] At this time, the button 3 has a pressed working position, in which the upper surface of the second step 392 cooperates with the lower surface of the annular boss 28 to prevent the button 3 from being withdrawn. When in use, the breaking piece 33 is bent to put the button 3 in an unlocked state, and then the button 3 is pressed downward, and the lower surface of the second step 392 and the upper surface of the annular boss 28 are slidably matched, so that the second step 392 passes over the annular boss 28, and the button 3 enters the working position, and the pressing platform 381 at the lower end of the button 3 drives the internal control switch of the electronic circuit breaker to close, and the electronic circuit breaker enters the standby / working state.

[0075] During the research, the inventors found that the existing electronic circuit opener mainly includes an opening part located at the front and a handheld part located at the rear. The opening part includes a metal probe rod. The principle is to identify the impedance value of the metal probe rod tip to the body tissue, and then detect the direction and position of the nail path, so as to achieve the purpose of fast and accurate nailing without the help of large-scale fluoroscopic equipment. However, when replacing screws of different lengths with the existing electronic circuit opener during surgery, it is necessary to replace the metal probe rod of the corresponding length. To solve this problem, the present invention preferably adopts the following structural form:

[0076] like Figure 5-9 As shown, the open circuit portion 1 may include a probe rod (the probe rod may be made of stainless steel), and an adjustable nailing device 4 is sleeved on the probe rod, wherein:

[0077] The adjustable nailing device 4 includes an outer sleeve 41 and an inner sleeve 42 slidably connected to the outer sleeve 41, the rear end of the outer sleeve 41 is fixedly connected to the front end of the handheld part 2, the probe rod is slidably connected to the inner sleeve 42 and the rear end of the probe rod is fixedly connected to the front end of the handheld part 2;

[0078] The adjustable nail driver 4 further comprises a locking structure for locking the outer sleeve 41 and the inner sleeve 42 after the relative positions thereof are adjusted.

[0079] When used during surgery, after the opening part 1 of the electronic circuit opener is connected to the hollow screw 6, the relative positions of the outer sleeve 41 and the inner sleeve 42 are adjusted. After the front end of the probe rod contacts the tip of the hollow screw 6, the relative positions of the outer sleeve 41 and the inner sleeve 42 are locked using the locking structure, and the electronic circuit opener can be used to establish a screw track on the patient's pedicle.

[0080] This embodiment can adjust the length of the exposed portion of the front end of the probe rod by adjusting the relative positions of the outer sleeve and the inner sleeve. The probe rod does not need to be disassembled and replaced during a one-time assembly, and can be suitable for screws of different lengths. In addition, the adjustable nailer also includes a locking structure for locking the relative positions of the outer sleeve and the inner sleeve after the relative positions are adjusted, so as to lock the relative positions of the outer sleeve and the inner sleeve, and then lock the length of the exposed portion of the front end of the probe rod, which is convenient for use during surgery.

[0081] The locking structure can adopt various structural forms that can be easily thought of by those skilled in the art, for example, one of the outer sleeve and the inner sleeve is provided with at least one pin hole, and the other is provided with at least two pin holes, and the locking structure is a positioning pin inserted into the pin hole; however, for the convenience of adjustment, the present invention preferably adopts the following structural form:

[0082] like Figure 5As shown, the locking structure may include a positioning pin 43 fixed on the inner sleeve 42, and a positioning slide 44 provided on the outer sleeve 41 for the positioning pin 43 to move, the positioning slide 44 includes at least two L-shaped positioning grooves, the L-shaped positioning groove includes a vertical sliding groove 441 extending along the axial direction of the outer sleeve 41 and a transverse sliding groove 442 perpendicular to the vertical sliding groove 441, and the vertical sliding grooves 441 of at least two L-shaped positioning grooves are sequentially arranged and connected along the axial direction of the outer sleeve 41. When in use, the inner sleeve 42 is driven to make the positioning pin 43 slide in the vertical sliding groove 441 of the L-shaped positioning groove of the positioning slide 44 to adjust the relative position of the outer sleeve 41 and the inner sleeve 42. When the relative position of the outer sleeve 41 and the inner sleeve 42 needs to be locked, the inner sleeve 42 is rotated to make the positioning pin 43 enter the transverse sliding groove 442 of the L-shaped positioning groove, so that the relative position of the outer sleeve 41 and the inner sleeve 42 can be locked. Furthermore, the vertical sliding grooves 441 of the L-shaped positioning groove are preferably all located on the same straight line.

[0083] Continue as Figure 5 As shown, a ball socket 443 may be provided at the end of the transverse sliding groove 442, and the ball socket 443 is located on the side of the transverse sliding groove 442 close to the handheld part 2, so as to better lock the relative position of the outer sleeve 41 and the inner sleeve 42, and facilitate the rotation and pressing operation of the electronic circuit breaker. During the operation, when it is necessary to lock the relative position of the outer sleeve 41 and the inner sleeve 42, the inner sleeve 42 is rotated so that the positioning pin 43 enters the ball socket 443 at the end of the transverse sliding groove 442 of the L-shaped positioning groove, and the relative position of the outer sleeve 41 and the inner sleeve 42 can be locked. A scale may be provided on the outer sleeve 41 at the ball socket 443 to indicate the relative position of the outer sleeve 41 and the inner sleeve 42.

[0084] To improve the stability between the outer sleeve 41 and the inner sleeve 42 , the number of the positioning pins 43 is preferably two and they are symmetrically distributed on both sides of the inner sleeve 42 , while the number of the positioning slots 44 is two and they are symmetrically distributed on both sides of the outer sleeve 41 .

[0085] like Figure 5 As shown in (b), the inner sleeve 42 may be provided with a spring 45 for axially spreading the outer sleeve 41 and the inner sleeve 42, and the spring 45 may continuously provide an axial spreading force, so that after the relative positions of the outer sleeve 41 and the inner sleeve 42 are locked, that is, after the positioning pin 43 enters the ball socket 443 at the end of the transverse sliding groove 442, the spring 45 may press / press the positioning pin 43 in the ball socket 443, and better lock the relative positions of the outer sleeve 41 and the inner sleeve 42. Specifically, the rear end of the inner sleeve 42 may be provided with a stopper 421, and the inner side wall of the front end of the outer sleeve 41 may be provided with a stopper ring 411 (specifically, the stopper ring 411 may be welded to the inner side wall of the outer sleeve 41), and one end of the spring 45 abuts against the stopper 421, and the other end abuts against the stopper ring 411.

[0086] like Figure 5-7 As shown, the front end of the handheld part 2 may be provided with a plug-in column 29, and the plug-in column 29 is provided with at least one positioning surface on its circumference. The rear end of the outer sleeve 41 is provided with an insertion port 412 that matches the plug-in column 29. One of the plug-in column 29 and the insertion port 412 is provided with a clamping bead 413, and the other is provided with a ball socket 291 that matches the clamping bead 413. The clamping bead 413 matches the ball socket 291, so that the handheld part 2 and the outer sleeve 41 can be quickly connected, and the combination is firm, so that the whole does not need to be held by hand at all times, and it can prevent falling and dislocation. In the embodiment shown in the figure, the plug-in column 29 is provided with four positioning surfaces on its circumference.

[0087] Further, such as Figure 7 and Fig. 9 As shown, the rear end of the probe rod can be provided with a positioning column 11, and at least one positioning surface is provided on the circumference of the positioning column 11. The plug-in column 29 of the hand-held part 2 is provided with a positioning hole 292 that matches the positioning column 11. At this time, the probe rod and the hand-held part 2 are connected by plugging, and can be directly inserted and matched. The positioning surface can make the probe rod withstand circumferential torque, and the fit is firm, the operation is convenient, and the operation time is short. In the embodiment shown in the figure, four positioning surfaces are provided on the circumference of the positioning column 11.

[0088] A circuit board assembly 7 (specifically, a glass fiber cloth-based CCL epoxy resin, such as FR-4, FR-5) may be provided in the handheld portion 2. A probe rod insertion hole 71 is provided on the circuit board assembly 7 to achieve electrical connection with the probe rod. Compared with the lead wire connection method, this method avoids entanglement, is easy to operate, and can achieve quick installation and quick replacement. Figure 8 As shown, the circuit board assembly 7 may include a circuit board 72 , a battery 73 and a speaker 74 are provided at the rear end of the circuit board 72 , and a probe rod insertion hole 71 is provided at the front end of the circuit board 72 .

[0089] like Figure 6-7 As shown, the handheld part 2 may include a lower shell 24 located at the front and an upper shell 25 located at the rear and covered on the lower shell 24, so as to facilitate the installation of the internal structure of the handheld part 2 (such as the circuit board assembly 7); the inner surface of the upper shell 25 may be provided with a reinforcing rib 26 that gradually thickens toward the apex of the tail (rear) of the handheld part 2 to increase the force strength of the apex of the tail of the handheld part 2, so as to realize the open circuit knocking operation and facilitate the open circuit surgery operation. The lower shell 24 of the handheld part 2 may be provided with a circuit board placement groove 201 for accommodating the circuit board 72 and a speaker placement groove 202 for accommodating the speaker 74; the outer surface of the lower shell 24 may be provided with a sound hole at the speaker placement groove 202. The upper shell 25, the lower shell 24 and the button 3 may all be made of PC material.

[0090] like Figure 5-6As shown, the plug-in port 412 may be provided with the aforementioned card bead 413, and the plug-in column 29 may be provided with a ball socket 291 that matches the card bead 413. In addition, the rear end of the outer sleeve 41 may be provided with a movable sleeve 414 that can drive the card bead 413; a spring 415 is provided on the outer sleeve 41 between the movable sleeve 414 and the outer sleeve 41 to facilitate the reset of the movable sleeve 414 after movement;

[0091] The bead 413 has a locked state and an unlocked state. In the locked state, the movable sleeve 414 contacts and squeezes the bead 413 so that the bead 413 protrudes from the inner side wall of the plug-in port 412; in the unlocked state, the movable sleeve 414 does not contact the bead 413, and the bead 413 can be retracted into the inner side wall of the plug-in port 412, so that the hand-held part 2 can be quickly removed from the outer sleeve 41. The volume is light and the operation is simple and convenient. Before use, the movable sleeve 414 is driven to put the bead 413 in the unlocked state, and the plug-in column 29 of the hand-held part 2 can be inserted into / pulled out of the plug-in port 412 of the outer sleeve 41. Then, the movable sleeve 414 is driven to put the bead 413 in the locked state. The bead 413 enters the ball socket 291 under the squeezing of the movable sleeve 414 to lock the hand-held part 2 on the outer sleeve 41.

[0092] like Figure 5 As shown in (a), the front end of the inner sleeve 42 may be provided with an extension sleeve 422, wherein:

[0093] The extension sleeve 422 may be provided with a gripping portion 423 to facilitate gripping operation;

[0094] The front end of the extension sleeve 422 may be provided with a cross bar portion 424 that matches the U-shaped groove of the hollow screw 6 to be implanted, so as to facilitate the positioning and connection of the hollow screw 6 to be implanted.

[0095] like Fig. 9 As shown, the probe rod in the present invention may include an inner core 12 and an outer core 13 sleeved on the inner core 12, the inner core 12 and the outer core 13 are both made of metal, a heat shrink tube 14 is sleeved on the inner core 12 to insulate the inner core 12 and the outer core 13 from each other, and a glue layer 15 is provided between the heat shrink tube 14 and the outer core 13. In this way, the inner core 12, the heat shrink tube 14 and the outer core 13 can be firmly connected together to prevent relative displacement of the three, thereby maintaining relative stability of the three during use, improving the stability and firmness of the overall structure, and preventing the inner core from returning to the inner hole of the outer core.

[0096] Furthermore, the heat shrink tube 14 may be provided with a groove (not shown) extending along the length direction of the heat shrink tube 14; preferably, there are at least two grooves and they are arranged along the length direction of the heat shrink tube 14; in this way, when assembling the probe rod, the heat shrink tube 14 is first installed on the inner core 12, and then the surface of the inner core 12 wrapped with the heat shrink tube 14 (i.e., the surface of the heat shrink tube 14) is evenly coated with glue and inserted into the inner hole of the outer core 13. Since the glue of the glue layer 15 is fluid, the glue of the glue layer 15 can flow evenly between the heat shrink tube 14 and the outer core 13 to fill the inner hole of the outer core 13 (basically without any gaps), and at the same time, the glue will flow into the inner hole of the heat shrink tube 14 (i.e., between the heat shrink tube 14 and the inner core 12) along the grooves on the heat shrink tube 14. After the glue of the glue layer 15 solidifies, the inner core 12, the heat shrink tube 14 and the outer core 13 can be firmly bonded together, and the assembly of the probe rod is completed.

[0097] At least one slot is preferably located at the front of the inner core 12 (i.e., near the tip of the probe rod) so that the front end of the inner core 12 is firmly bonded to the outer core 13, the pressure resistance of the front end of the inner core 12 is improved, the stability of the tip of the probe rod is improved, and the inner core 12 is prevented from returning to the inner hole of the outer core 13. Furthermore, the opening directions of the slots are preferably the same (i.e., the slots are open to the same side of the heat shrink tube 14) so ​​that the glue of the glue layer 15 can fill the slots under the action of gravity. In this way, before the glue of the glue layer 15 solidifies, the probe rod is adjusted so that the slots on the heat shrink tube 14 are all facing downward. At this time, the glue of the glue layer 15 flows into and fills the slots under the action of gravity, so as to prevent the inner core 12 and the outer core 13 from short-circuiting at the slots, and at the same time, the bonding at the slots can be firmly secured.

[0098] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An electronic circuit breaker, characterized in that: It includes an opening part at the front and a hand-held part at the rear, wherein the hand-held part is provided with a button mounting hole, wherein a button for driving an internal control switch of the electronic circuit breaker is provided in the button mounting hole, and an anti-accidental touch structure is provided on the button; The button comprises a main body, the main body is provided with a longitudinal groove so that the main body is arranged in a petal-shaped manner, the anti-accidental touch structure has a first state and a second state, and in the first state and the second state, the anti-accidental touch structure is not separated from the button; When the anti-accidental-touch structure is in the first state, the button is axially positioned in the button mounting hole; when the anti-accidental-touch structure is in the second state, the main body of the button can be radially contracted at the longitudinal groove under the action of an external force, so that the button can be pressed and moved downward in the button mounting hole; The button includes a plug-in fitting portion located below the main body portion, and the plug-in fitting portion and the button mounting hole are provided with mutually cooperating anti-retraction portions, and the anti-retraction portion includes an elastic baffle provided on the plug-in fitting portion and an annular boss provided below the button mounting hole and extending radially inward, and the elastic baffle can be radially elastically deformed in the button mounting hole so that the elastic baffle can expand after passing over the annular boss to prevent the button from withdrawing.

2. The electronic circuit breaker according to claim 1, characterized in that: A semicircular insertion hole is provided on the inner end surface of one of the petals of the main body, and a D-shaped plug pin which can rotate but cannot be axially disengaged is provided in the semicircular insertion hole, and the diameter of the D-shaped plug pin is equal to the sum of the radius of the semicircular insertion hole and the width of the longitudinal groove; Alternatively, a blocking pin is provided between the two petals of the main body, and the blocking pin is connected to one of the petals via a tether.

3. The electronic circuit breaker according to claim 1, characterized in that: The anti-mistaken collision structure is a breaking piece connecting the petals of the main body, one end of the breaking piece is connected to one of the petals of the main body through a bending axis, and the other end is connected to the other petal of the main body through a breaking axis; When the breaking piece is not broken, the button is axially positioned in the button mounting hole; when the breaking piece is broken, the main body of the button can radially shrink at the longitudinal groove under the action of external force, so that the button can be pressed and moved downward in the button mounting hole.

4. The electronic circuit breaker according to claim 3, characterized in that: The upper end surface of the main body is an inclined surface, and the breaking piece is located at the highest point of the inclined surface and is located in the same plane as the inclined surface; And / or, the breaking piece is located directly above the main body, the outer contour of the breaking piece does not exceed the outer contour of the main body, and a bending avoidance groove is provided on the main body below the breaking piece; and / or, the highest point of the breaking piece does not exceed the highest point of the outer surface of the tail portion of the hand-held portion; And / or, a bending groove is provided at the connection between the breaking piece and the main body; And / or, a notch is provided at the connecting end between the breaking piece and the breaking shaft.

5. The electronic circuit breaker according to claim 3, characterized in that: A locking boss is disposed on the outer surface of at least one of the petals of the main body. When the breaking piece is not broken, the size of the button at the locking boss is larger than the size of the button mounting hole.

6. The electronic circuit breaker according to claim 5, characterized in that: The lower surface of the locking boss is an inclined surface that slopes upward from the root to the end; And / or, the main body is provided with chamfers at the edges of the openings of the longitudinal slots; And / or, the main body is provided with a ball socket at the opening of the longitudinal slot near the breaking piece.

7. The electronic circuit breaker according to claim 1, characterized in that: The lower end surface of the plug-in mating portion is used as a pressing platform for driving and connecting the internal control switch of the electronic circuit breaker, and the plug-in mating portion is provided with an axially extending slot, so that a column connecting the main body and the pressing platform is formed in the middle of the plug-in mating portion, and at least two elastic baffles are formed on the side of the pressing platform; And / or, a first step is provided in the middle of the outer surface of the elastic baffle, an inclined surface is provided on the upper surface of the annular boss which is inclined downward from the root to the end, and the lower surface of the first step is an inclined surface which matches with the upper surface of the annular boss; the button has an initial installation position, in which the upper surface of the first step matches with the lower surface of the annular boss to prevent the button from withdrawing; And / or, a second step is provided on the upper portion of the outer surface of the elastic baffle, the upper surface of the annular boss is provided with an inclined surface inclined downward from the root to the end, and the lower surface of the second step is an inclined surface matching the upper surface of the annular boss; the button has a working position after being pressed, and in the working position after being pressed, the upper surface of the second step matches the lower surface of the annular boss to prevent the button from withdrawing.

8. The electronic circuit breaker according to any one of claims 1 to 7, characterized in that: The open circuit portion comprises a probe rod, and an adjustable nailing device is sleeved on the probe rod, wherein: The adjustable nailing device comprises an outer sleeve and an inner sleeve slidably connected in the outer sleeve, the rear end of the outer sleeve is fixedly connected to the front end of the handheld part, the probe rod is slidably connected in the inner sleeve and the rear end of the probe rod is fixedly connected to the front end of the handheld part; The adjustable nailer also includes a locking structure for locking the outer sleeve and the inner sleeve after the relative positions are adjusted.

9. The electronic circuit breaker according to claim 8, characterized in that: The locking structure includes a positioning pin fixed on the inner sleeve, and a positioning groove arranged on the outer sleeve for the positioning pin to move, the positioning groove includes at least two L-shaped positioning grooves, the L-shaped positioning groove includes a vertical sliding groove extending along the axial direction of the outer sleeve and a horizontal sliding groove perpendicular to the vertical sliding groove, and the vertical sliding grooves of at least two L-shaped positioning grooves are arranged in sequence along the axial direction of the outer sleeve and are connected.

10. The electronic circuit breaker according to claim 9, characterized in that: A ball socket is provided at the end of the transverse sliding groove, and the ball socket is located on a side of the transverse sliding groove close to the handheld part; And / or, the number of the positioning pins is two and they are symmetrically distributed on both sides of the inner sleeve, and the number of the positioning slots is two and they are symmetrically distributed on both sides of the outer sleeve; And / or, the inner sleeve is sleeved with a spring for axially spreading the outer sleeve and the inner sleeve apart.

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