Probe depth limiter

Abstract

A probe depth limiter disclosed by the present invention comprises a probe, a body, a sliding block assembly and a locking mechanism, the body is provided with a first through hole and a guide rail, the sliding block assembly and the guide rail are slidably connected along the length direction of the probe, the sliding block assembly is provided with a second through hole, and the locking mechanism is arranged on the sliding block assembly. The probe penetrates through the second through hole and is fixedly connected with the sliding block assembly to form a movable probe assembly; the locking mechanism comprises two sets of lock catch assemblies which are oppositely arranged, each lock catch assembly comprises a button, and locking and unlocking of sliding in the length direction are achieved by operating the buttons. Compared with a structure in which a locking button and a probe insertion depth adjusting holding part are separately arranged, the locking structure and the depth adjusting holding structure are combined into a whole, the structure is simple, convenient and labor-saving, a first through hole in the front portion is matched with a second through hole of the sliding block assembly, the extending end of the probe is supported in a multi-point mode, and the accuracy of the insertion angle of the probe is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical equipment, and in particular to a probe depth stopper. Background Art

[0002] In brain laser ablation surgery, the insertion depth of the laser probe is one of the most important indicators. The insertion depth of the laser probe should be adjustable within a certain range to ensure that the lesion area is covered, but it should not exceed the lesion area. If the laser probe is inserted beyond the treatment depth planned before surgery, it may cause irreversible damage to the patient. Therefore, the depth limiter that limits the insertion depth of the laser probe plays a very significant role. This device can lock the depth of the laser probe during surgery to prevent the probe and laser energy from entering unplanned areas, so as to better protect patient safety.

[0003] Currently, the probes on the market are mainly locked and unlocked by a snap button. When the snap button is pressed, a large force is required, and corresponding vibration will be generated, which affects the accuracy of the probe insertion depth. In addition, the cantilevers on both sides of this depth limiter are long. When the stroke reaches the maximum, the supporting force of the depth limiter is very small, which affects the accuracy of the probe insertion angle.

[0004] Therefore, there is an urgent need for a depth stopper that is easy to unlock and lock while being inserted with guaranteed accuracy. Summary of the invention

[0005] In order to solve the problem that the depth stopper is not easy to unlock and lock and the insertion accuracy is not easy to stably control in the above background technology, the present invention provides the following technical solutions:

[0006] A probe depth stopper comprises a probe, a body, a slider assembly and a locking mechanism, wherein the body is provided with a first through hole and a guide rail, the slider assembly and the guide rail are slidably connected along the length direction of the probe, the slider assembly is provided with a second through hole, the probe penetrates the second through hole and is fixedly connected to the slider assembly to form a movable probe assembly;

[0007] The probe also penetrates the first through hole, the extended end of the probe, the first through hole and the second through hole are sequentially arranged along the length direction, and the movable probe assembly and the body are slidably connected along the length direction;

[0008] The locking mechanism includes two sets of locking components arranged opposite to each other, and the locking components include a button. By operating the button, the movable probe component can be switched between an unlocked state in which it can slide along the length direction and a locked state in which it cannot slide along the length direction relative to the body.

[0009] Preferably, the body is provided with a front portion on one side close to the extended end of the probe, the front portion is perpendicular to the length direction, the first through hole is provided on the front portion, the movable probe assembly penetrates the first through hole and is slidably connected to the body along the length direction;

[0010] The guide rail is connected to the bottom end of the front portion and extends along the length direction to a side of the body away from the front portion.

[0011] Preferably, the guide rail is provided with a first groove, the first groove is connected to the front portion and extends along the length direction to a side of the body away from the front portion;

[0012] A second groove is provided on each of the two side walls of the first groove, the second groove is connected to the front portion and extends along the length direction to a side of the body away from the front portion;

[0013] The slider assembly includes a slider seat, and the slider seat is correspondingly connected to the second groove on both sides in the width direction. The width direction is perpendicular to the length direction. The slider seat and the second groove are slidably connected along the length direction, and the slider seat and the first groove are slidably connected along the length direction.

[0014] Preferably, the lock assembly further includes a first locking portion and a second locking portion, and the first locking portion is provided on each side wall of the first groove, and the bottom of the first groove, the second groove and the first locking portion are sequentially arranged in a height direction of the groove, and the height direction is perpendicular to the length direction, and the height direction is perpendicular to the width direction;

[0015] The slider assembly further includes a slider lock, the slider lock and the slider seat are fixedly connected and surround the second through hole, and the slider lock is provided with two second locking parts on both outer sides in the width direction;

[0016] The number of the buttons is two, and each set of the lock assembly includes one of the first locking portion, one of the second locking portion and one of the buttons located on the same side;

[0017] The first locking portion, the second locking portion and the button cooperate to realize the conversion of the movable probe assembly relative to the body between the unlocked state and the locked state.

[0018] Preferably, the slider assembly further comprises a housing, the slider seat, the slider lock and the button are all fixedly connected to the housing, the second locking portion is a flexible arm, and a protrusion is provided at the end of the flexible arm;

[0019] The first locking portion is a serrated strip, and the first locking portion extends from the bottom end of the front portion along the length direction to a side of the body away from the front portion;

[0020] When the button is not pressed, the protrusion is stuck between the serrations of the first locking portion, and the movable probe assembly is in the locked state relative to the body; when the button is pressed, the button acts on the second locking portion to drive the protrusion to disengage from the serrations of the first locking portion, and is in the unlocked state.

[0021] Preferably, the slider seat is provided with a lower half cavity, the slider lock is provided with an upper half cavity, and the upper half cavity and the lower half cavity together enclose the second through hole;

[0022] The slider assembly further includes a probe holder for fixing the probe in the second through hole;

[0023] The slider seat and the slider lock are fixedly connected.

[0024] Preferably, the probe depth stopper further comprises a driving portion, which is disposed on a side of the front portion adjacent to the extended end of the probe and is detachably connected to the front portion;

[0025] The driving part is provided with a third through hole, and the probe penetrates through the third through hole and then extends out of the driving part.

[0026] Preferably, an open cavity is provided at the top of the front portion, a connecting lock is provided in the open cavity, and the connecting lock can move up and down along a height direction relative to the open cavity, and the height direction is perpendicular to the length direction;

[0027] A spring is provided on the side of the connection lock away from the opening of the top, an opening is provided in the middle of the connection lock, a clamping end is provided on the driving part, and the clamping end is connected to the opening, and the spring, the opening and the clamping end cooperate to unlock and lock the driving part;

[0028] The probe is connected to the connection lock via the clamping end.

[0029] Preferably, the guide rail is provided with a first groove, the first groove is connected to the front portion and extends along the length direction and passes through a side of the body away from the front portion;

[0030] A second groove is provided on each of the two side walls of the first groove, the second groove is connected to the front portion and extends along the length direction and passes through a side of the body away from the front portion;

[0031] The slider assembly includes a slider seat, the slider seat is connected to the second groove at both sides in the width direction, the width direction is perpendicular to the length direction, the slider seat and the second groove are slidably connected along the length direction, and the slider seat and the first groove are slidably connected along the length direction;

[0032] An end cover is provided on one side of the guide rail away from the front portion, the end cover is fixedly connected to the guide rail, and the end cover limits the limit position at which the slider seat can slide relative to the second groove along the length direction away from the front portion.

[0033] Preferably, the probe depth stopper further comprises a probe sheath, which is used to wrap the probe and is connected to a side of the slider assembly away from the front portion.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: unlocking and locking are achieved by relatively arranging two sets of locking components. Compared with the structure in which the unlocking button and the probe insertion depth adjustment gripping part are arranged separately, the locking structure and the depth adjustment gripping structure of this structure are combined into one, which is simple, convenient and labor-saving; unlocking and locking are easily achieved through the cooperation between the serrations of the first locking part and the end protrusion of the flexible arm; through the cooperation between the first through hole of the front part and the second through hole of the slider assembly, the protruding end of the probe is supported at multiple points, and the accuracy of the probe insertion angle is guaranteed; the depth limiter is unlocked and the depth is adjusted synchronously, which is convenient to use; the slider assembly and the probe are composed of a probe assembly through a fixer to slide on the guide rail, so that the probe can remain stable and not easy to shake whether in the unlocking process or in the moving stage locked state; the assemblable design of the slider assembly and the detachable design of the driving part and the front part make the depth limiter suitable for probes of different sizes and shapes through simple adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a schematic diagram of the axial structure of a part of the depth stopper in one embodiment of the present invention.

[0037] Figure 2 It is a schematic diagram of the structure in which the slider seat is installed on the body in one embodiment of the present invention.

[0038] Figure 3 It is a schematic diagram of the exploded structure in which the slider assembly is installed on the body in one embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the explosion structure in which the driving part is connected to the main body in one embodiment of the present invention.

[0040] Figure 5 It is another structural schematic diagram of a slider seat installed on a body in one embodiment of the present invention.

[0041] Figure 6 It is a schematic diagram of the exploded structure in which the slider seat and the slider lock are installed on the body in one embodiment of the present invention.

[0042] Figure 7 It is a schematic diagram of the exploded structure of the connection between the slider seat and the slider lock in one embodiment of the present invention.

[0043] Figure 8 It is a schematic diagram of the structure of the probe installation, the body and the slider seat in one embodiment of the present invention.

[0044] Fig. 9 It is a schematic diagram of the structure after the slider seat and the slider lock are assembled in one embodiment of the present invention.

[0045] Fig.10 Schematic diagram of the structure of the housing in one embodiment of the present invention.

[0046] Fig.11 It is a schematic diagram of the structure after the housing, button, slider seat and slider lock are assembled in one embodiment of the present invention.

[0047] Fig.12 It is a schematic diagram of the structure after the housing and the button are assembled in one embodiment of the present invention.

[0048] Fig.13 It is a schematic diagram of a top view of the structure in which a slider assembly is installed on a body in one embodiment of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, a probe depth stopper includes a probe 20, a body 101, a slider assembly 120 and a locking mechanism, the body 101 is provided with a first through hole 202 and a guide rail 1010, the slider assembly 120 and the guide rail 1010 are slidably connected along the length direction of the probe 20, the slider assembly 120 is provided with a second through hole 1002, the probe 20 penetrates the second through hole 1002 and is fixedly connected with the slider assembly 120 to form a movable probe assembly;

[0051] The probe 20 also penetrates the first through hole 202. The protruding end of the probe 20, the first through hole 202 and the second through hole 1002 are arranged in sequence along the length direction. The movable probe assembly and the body 101 are slidably connected along the length direction; thereby driving the probe to slide a certain stroke on the guide rail 1010, thereby adjusting the protruding depth of the probe.

[0052] The locking mechanism includes two sets of locking components arranged opposite to each other. The locking components include a button 108. By operating the button 108, the movable probe component is switched between an unlocked state in which it can slide along the length direction and a locked state in which it cannot slide along the length direction relative to the body 101.

[0053] In some embodiments, Figure 2 As shown, a front portion 1017 is provided on one side of the body 101 close to the extended end of the probe 20, and the front portion 1017 is perpendicular to the length direction. The first through hole 202 is provided on the front portion 1017, and the movable probe 20 assembly penetrates the first through hole 202 and is slidably connected to the body 101 along the length direction;

[0054] The guide rail 1010 is connected to the bottom end of the front portion 1017 and extends along the length direction to a side of the body 101 away from the front portion 1017 .

[0055] In some embodiments, Figure 2 As shown, the guide rail 1010 is provided with a first groove 1013, the first groove 1013 is connected to the front portion 1017 and extends along the length direction to the side of the body 101 away from the front portion 1017; in a specific embodiment, as shown in FIG. Fig.13 As shown, one or more openings may be provided in the bottom central area of ​​the first groove 1013 to achieve weight reduction without affecting the bearing slider assembly 120 .

[0056] A second groove 1014 is respectively formed on both side walls of the first groove 1013. The second groove 1014 is connected to the front portion 1017 and extends along the length direction to a side of the body 101 away from the front portion 1017.

[0057] The slider assembly 120 includes a slider seat 104, and the slider seat 104 is connected to the second groove 1014 on both sides of the width direction. The width direction is perpendicular to the length direction. The slider seat 104 and the second groove 1014 are slidably connected along the length direction. The second groove 1014 limits the slider seat 104 to slide only along the length direction, that is, the slider seat 104 and the first groove 1013 are slidably connected along the length direction. In a specific embodiment, the second groove 1014 is connected to the bottom of the first groove 1013, that is, the bottom of the first groove 1013 is a side wall of the second groove 1014, so that the slider seat 104 abuts against the bottom of the first groove 1013, and the bottom of the first groove 1013 supports the slider seat 104.

[0058] In some embodiments, Figure 2 , Figure 3 and Figure 6 As shown, the lock assembly further includes a first locking portion 1015 and a second locking portion 1051. The two side walls of the first groove 1013 are each provided with a first locking portion 1015. The bottom of the first groove 1013, the second groove 1014 and the first locking portion 1015 are sequentially arranged in the height direction of the groove. The height direction is perpendicular to the length direction, and the height direction is perpendicular to the width direction.

[0059] The slider assembly 120 further includes a slider lock 105. The slider lock 105 is fixedly connected to the slider seat 104 and surrounds a second through hole 1002. The slider lock 105 is provided with two second locking portions 1051 on both outer sides in the width direction.

[0060] There are two buttons 108, and each set of locking components includes a first locking portion 1015, a second locking portion 1051 and a button 108 located on the same side;

[0061] The first locking portion 1015 , the second locking portion 1051 and the button 108 cooperate to realize the switching of the mobile probe 20 assembly relative to the body 101 between the unlocked state and the locked state.

[0062] In some embodiments, Figure 2 , Figure 3 , Figure 6 , Fig.11 and Fig.13 As shown, the slider assembly 120 further includes a housing 103, a slider seat 104, a slider lock 105 and a button 108 are all detachably connected to the housing 103, and the second locking portion 1051 is a flexible arm, and a protrusion 10701 is provided at the end of the flexible arm;

[0063] The first locking portion 1015 is a serrated strip, and the first locking portion 1015 extends from the bottom end of the front portion 1017 along the length direction to a side of the body 101 away from the front portion 1017;

[0064] When the button 108 is not pressed, the protrusion 10701 is stuck between the serrations of the first locking portion 1015, and the movable probe 20 assembly is in a locked state relative to the body 101; when the button 108 is pressed, the button 108 acts on the second locking portion 1051 to drive the protrusion 10701 to disengage from the serrations of the first locking portion 1015, and is in an unlocked state.

[0065] Specifically, if Figure 9-12 As shown, the slider lock 105, the slider seat 104 and the button 108 are assembled with the housing 103. Fig. 9 and Fig.10 As shown, the slider lock 105 and the slider seat 104 are assembled in the cavity 1031 of the housing 103, the column 1055 of the slider lock 105 cooperates with the hole 1032 of the housing 103 to limit the position, and the groove 1045 of the slider seat 104 cooperates with the buckle 1033 of the housing 103. The state after the assembly is completed is as shown in FIG. Fig. 9 As shown, Fig.11 and Fig.12 As shown, the connecting shaft 1081 of the button 108 is inserted into the hole 1034 of the housing 103.

[0066] In some embodiments, Figure 3 and Figure 7 As shown, the slider seat 104 is provided with a lower cavity 1044, and the slider lock 105 is provided with an upper cavity 1054, and the upper cavity 1054 and the lower cavity 1044 are surrounded by a second through hole 1002;

[0067] like Figure 3 , Figure 6 and Figure 7 As shown, the guide post 1052 of the slider lock 105 is assembled with the hole 1042 of the slider seat 104, so that the half cavity 1054 of the slider lock 105 and the half cavity 1044 of the slider seat 104 are aligned, and at the same time, the half cavity buckle position 1053 of the slider lock 105 and the groove 1043 of the slider seat 104 are matched and locked.

[0068] like Figure 3 , Figure 6 and Fig.13 As shown, after the slider lock 105 is installed on the slider seat 104, the toothed first locking portion 1015 of the main body 101 cooperates with the second locking portion 1051 of the slider lock 105, and the second locking portion 1051 of the slider lock 105 is pushed by the button 108 to achieve the locking and release of the protrusion 10701 of the second locking portion 1051 and the tooth 1015, thereby controlling the locking of the slider 1041 within a certain range of movement on the main body 101.

[0069] like Figure 8As shown, the slider assembly 120 further includes a probe holder 21 for fixing the probe 20 in the second through hole 1002 ; the probe holder 21 is locked by the slider seat 104 and the slider lock 105 .

[0070] like Figure 7 and Fig. 9 As shown, the slider seat 104 and the slider lock 105 are fixedly connected.

[0071] In some embodiments, Figure 1 and Figure 4 As shown, the depth stopper of the probe 20 further includes a driving portion 40, which is disposed on one side of the front portion 1017 adjacent to the extended end of the probe 20 and is detachably connected to the front portion 1017;

[0072] The driving portion 40 is provided with a third through hole, and the probe 20 penetrates through the third through hole and then extends out of the driving portion 40 .

[0073] In some embodiments, Figure 3 and 4 As shown, an open cavity 1011 is provided at the top of the front portion 1017, and a connecting lock 102 is provided in the open cavity 1011. The connecting lock 102 can move up and down along the height direction relative to the open cavity 1011, and the height direction is perpendicular to the length direction;

[0074] A spring 107 is provided on the side of the opening of the connection lock 102 away from the top, an opening is provided in the middle of the connection lock 102, a clamping end is provided on the drive part 40, and the clamping end is connected to the opening, and the spring 107, the opening and the clamping end cooperate to realize unlocking and locking of the drive part 40;

[0075] The probe 20 is connected via a snap-on terminal and a connection lock 102 .

[0076] Specifically, if Figure 3 and 4 As shown, the connecting lock 102 is installed in the cavity of the main body 101, and is connected to the groove 1012 of the main body 101 through a flexible buckle 1021 and moves up and down within a certain range. A spring 107 is installed on the guide column 1022 of the connecting lock 102, and the recess 1023 of the connecting lock 102 and the driving part 40 are released and locked through the compression and recovery of the spring 107.

[0077] In some embodiments, Figure 2 and Figure 3 As shown, the guide rail 1010 is provided with a first groove 1013, the first groove 1013 is connected to the front portion 1017 and extends along the length direction and passes through a side of the body 101 away from the front portion 1017;

[0078] A second groove 1014 is respectively formed on both side walls of the first groove 1013. The second groove 1014 is connected to the front portion 1017 and extends along the length direction and passes through a side of the body 101 away from the front portion 1017.

[0079] like Figure 5 As shown, the slider assembly 120 includes a slider seat 104, and the slider seat 104 is provided with sliders 1041 on both sides of the width direction. The sliders 1041 are slidably connected with the second groove 1014. The width direction is perpendicular to the length direction. The slider seat 104 and the second groove 1014 are slidably connected along the length direction, and the slider seat 104 and the first groove 1013 are slidably connected along the length direction; thereby driving the probe to slide on the first groove 1013 for a certain stroke, realizing the movement of the probe and the driving part 40 along the length direction, and then adjusting the depth of the probe entering the human brain. In some embodiments, a measuring tool can be added to the probe 20 to quantify the depth adjustment range.

[0080] An end cover 106 is provided on one side of the guide rail 1010 away from the front portion 1017 . The end cover 106 is fixedly connected to the guide rail 1010 . The end cover 106 limits the limit position at which the slider seat 104 can slide relative to the second groove 1014 along the length direction away from the front portion 1017 .

[0081] like Figure 3 , Figure 5 and Figure 6 As shown, the opening at the end of the body 101 allows the sliders 1041 on both sides of the slider seat 104 to slide into and be assembled along the first groove 1013 of the body 101, and then the end cover 106 is installed. The buckle 1061 of the end cover 106 is locked with the groove 1014 of the slide rail member 101, thereby limiting the sliding of the slider seat 104 on the slide rail member 101 to a certain stroke.

[0082] like Figure 1 As shown, in some embodiments, the probe depth stopper further includes a probe sheath 30 , which is used to wrap the probe 20 and is connected to a side of the slider assembly 120 away from the front portion 1017 .

[0083] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A probe depth stop, characterized in that: It includes a probe, a body, a slider assembly and a locking mechanism, the body is provided with a first through hole and a guide rail, the slider assembly and the guide rail are slidably connected along the length direction of the probe, the slider assembly is provided with a second through hole, the probe penetrates the second through hole and is fixedly connected to the slider assembly to form a movable probe assembly; The probe also penetrates the first through hole, the extended end of the probe, the first through hole and the second through hole are sequentially arranged along the length direction, and the movable probe assembly and the body are slidably connected along the length direction; The locking mechanism includes two sets of locking components arranged opposite to each other, and the locking components include a button. By operating the button, the movable probe component can be switched between an unlocked state in which it can slide along the length direction and a locked state in which it cannot slide along the length direction relative to the body.

2. The probe depth stopper according to claim 1, characterized in that: The body is provided with a front portion on one side close to the probe extension end, the front portion is perpendicular to the length direction, the first through hole is provided on the front portion, the movable probe assembly penetrates the first through hole and is slidably connected with the body along the length direction; The guide rail is connected to the bottom end of the front portion and extends along the length direction to a side of the body away from the front portion.

3. The probe depth stopper according to claim 2, characterized in that: The guide rail is provided with a first groove, the first groove is connected to the front portion and extends along the length direction to a side of the body away from the front portion; A second groove is provided on each of the two side walls of the first groove, the second groove is connected to the front portion and extends along the length direction to a side of the body away from the front portion; The slider assembly includes a slider seat, and the slider seat is correspondingly connected to the second groove on both sides in the width direction. The width direction is perpendicular to the length direction. The slider seat and the second groove are slidably connected along the length direction, and the slider seat and the first groove are slidably connected along the length direction.

4. The probe depth stopper according to claim 3, characterized in that: The lock assembly further includes a first locking portion and a second locking portion, wherein the first locking portion is provided on each side wall of the first groove, and the bottom of the first groove, the second groove and the first locking portion are sequentially arranged in a height direction of the groove, wherein the height direction is perpendicular to the length direction, and the height direction is perpendicular to the width direction; The slider assembly further includes a slider lock, the slider lock and the slider seat are fixedly connected and surround the second through hole, and the slider lock is provided with two second locking parts on both outer sides in the width direction; The number of the buttons is two, and each set of the lock assembly includes one of the first locking portion, one of the second locking portion and one of the buttons located on the same side; The first locking portion, the second locking portion and the button cooperate to realize the conversion of the movable probe assembly relative to the body between the unlocked state and the locked state.

5. The probe depth stopper according to claim 4, characterized in that: The slider assembly further includes a housing, the slider seat, the slider lock and the button are all fixedly connected to the housing, the second locking portion is a flexible arm, and a protrusion is provided at the end of the flexible arm; The first locking portion is a serrated strip, and the first locking portion extends from the bottom end of the front portion along the length direction to a side of the body away from the front portion; When the button is not pressed, the protrusion is stuck between the serrations of the first locking portion, and the movable probe assembly is in the locked state relative to the body; when the button is pressed, the button acts on the second locking portion to drive the protrusion to disengage from the serrations of the first locking portion, and is in the unlocked state.

6. The probe depth stopper according to claim 4, characterized in that: The slider seat is provided with a lower half cavity, the slider lock is provided with an upper half cavity, and the upper half cavity and the lower half cavity together enclose the second through hole; The slider assembly further includes a probe holder for fixing the probe in the second through hole; The slider seat and the slider lock are fixedly connected.

7. The probe depth stopper according to claim 2, characterized in that: The probe depth stopper further includes a driving portion, which is disposed on a side of the front portion adjacent to the extended end of the probe and is detachably connected to the front portion; The driving part is provided with a third through hole, and the probe penetrates through the third through hole and then extends out of the driving part.

8. The probe depth stopper according to claim 7, characterized in that: An open cavity is provided at the top of the front portion, a connecting lock is provided in the open cavity, and the connecting lock can move up and down along a height direction relative to the open cavity, and the height direction is perpendicular to the length direction; A spring is provided on the side of the connection lock away from the opening of the top, an opening is provided in the middle of the connection lock, a clamping end is provided on the driving part, and the clamping end is connected to the opening, and the spring, the opening and the clamping end cooperate to unlock and lock the driving part; The probe is connected to the connection lock via the clamping end.

9. The probe depth stopper according to claim 2, characterized in that: The guide rail is provided with a first groove, the first groove is connected to the front portion and extends along the length direction and passes through a side of the body away from the front portion; A second groove is provided on each of the two side walls of the first groove, the second groove is connected to the front portion and extends along the length direction and passes through a side of the body away from the front portion; The slider assembly includes a slider seat, the slider seat is connected to the second groove at both sides in the width direction, the width direction is perpendicular to the length direction, the slider seat and the second groove are slidably connected along the length direction, and the slider seat and the first groove are slidably connected along the length direction; An end cover is provided on one side of the guide rail away from the front portion, the end cover is fixedly connected to the guide rail, and the end cover limits the limit position at which the slider seat can slide relative to the second groove along the length direction away from the front portion.

10. The probe depth stopper according to claim 1, characterized in that: The probe depth stopper further includes a probe sheath, which is used to wrap the probe and is connected to a side of the slider assembly away from the front portion.

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