An electric tap

Abstract

The application relates to the technical field of medical equipment, and discloses an electric tap, which comprises a handle, a tap body, a detection assembly and an auxiliary part. The tap body is arranged to rotate through the handle, a spiral tooth is arranged on the distal end side wall of the tap body, a plurality of scale marks are arranged on the side wall of the proximal end side of the spiral tooth, the tap body comprises an insulatively connected first contact part and a second contact part, and the first contact part and the second contact part both extend to the distal end of the tap body; the detection assembly comprises a current collecting part, the first collecting end of the current collecting part is electrically connected with the first contact part, and the second collecting end of the current collecting part is electrically connected with the second contact part; the tap body is insulatively connected with the auxiliary part and covers at least part of the side wall of the tap body, and the auxiliary part can move along the axial direction of the tap body. The electric tap shortens the operation time, reduces the working strength of doctors, and can monitor the contact between the tap and tissues in operation at any time, thereby guaranteeing the operation safety and operation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to an electric tap. Background Art

[0002] In orthopedic surgery, screws are required to fix bones. Typically, a blind hole is drilled first, then tapped to form a threaded hole. Finally, the screw is screwed into the threaded hole to achieve fixation. The depth of the blind hole is often smaller than the final threaded hole, meaning the tapper needs to be extended forward along the axis of the blind hole to increase the hole depth.

[0003] Because tapping during surgery isn't a visual operation, surgeons rely on experience and X-rays to determine the depth of the threaded hole. This can easily lead to misplaced taps, which can cause them to penetrate the cortical bone and damage the soft tissue or nerves surrounding the bone. This can cause minor bleeding or even paralysis or movement disorders. Furthermore, after tapping to a certain depth, the depth of the threaded hole must be measured, and then re-tapped based on the measurement. This process of tapping and depth measurement must be repeated multiple times.

[0004] Using existing tapping technology results in prolonged surgeries, low efficiency, increased workload for the surgeon, and significant X-ray exposure for both the surgeon and the patient. Furthermore, the surgeon's subjective judgment of when to stop tapping is largely based on manual feel, which can be highly subjective and cannot guarantee surgical results, potentially causing secondary injuries to the patient.

[0005] Based on this, there is an urgent need for an electric tap to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an electric tap to avoid repeated measurements and tapping operations, shorten the operation time, improve the operation efficiency, reduce the workload of the doctor, and monitor at any time which tissue the tap contacts during the operation, thereby ensuring the safety and effectiveness of the operation.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] An electric tap, comprising:

[0009] handle;

[0010] A tap body is rotatably mounted on the handle, a distal side wall of the tap body is provided with a spiral tooth, a side wall of the tap body located proximal to the spiral tooth is provided with a plurality of scale marks, the plurality of scale marks are evenly spaced along the axial direction of the tap body, the tap body includes a first contact portion and a second contact portion, the first contact portion is insulated from the second contact portion, and both the first contact portion and the second contact portion extend to the distal end of the tap body;

[0011] A detection assembly is arranged in the handle, and the detection assembly comprises a current collection piece, a first collection end of the current collection piece is electrically connected with the first contact part, and a second collection end of the current collection piece is electrically connected with the second contact part.

[0012] An auxiliary piece is capable of abutting against a bone surface of a patient at a distal end, the auxiliary piece is insulatively connected with the tap body and shields at least part of a side wall of the tap body, and the auxiliary piece is capable of moving along an axial direction of the tap body.

[0013] As an optional technical solution of the electric tap, the auxiliary piece is in a cylindrical shape and coaxially arranged with the tap body, a proximal end of the auxiliary piece is blocked by a blocking wall, the tap body is coaxially arranged through the blocking wall, and the blocking wall is located at a proximal end side of the helical tooth and capable of abutting against the blocking wall.

[0014] As an optional technical solution of the electric tap, a support ring edge is annularly and protrudingly arranged on an outer side wall of a distal end of the auxiliary piece, and a distal end surface of the support ring edge is flush with a distal end surface of the auxiliary piece; and / or,

[0015] The auxiliary piece is detachably connected with the tap body.

[0016] As an optional technical solution of the electric tap, the second contact part is sleeved with the first contact part, and a distal end of the first contact part is exposed outside the second contact part, an insulating layer is arranged between the first contact part and the second contact part, and the helical tooth is formed on an outer side wall of a distal end of the second contact part.

[0017] As an optional technical solution of the electric tap, a proximal end of the second contact part is located in the handle, a proximal end of the first contact part is arranged through the proximal end of the second contact part, and a part of the first contact part arranged through the second contact part comprises a handle inner segment located in the handle, the first collection end is electrically connected with the handle inner segment, and the second collection end is electrically connected with a part of the second contact part located in the handle.

[0018] As an optional technical solution of the electric tap, the electric tap further comprises a connecting assembly arranged in the handle, the connecting assembly comprises a contact head and a connecting ring, the connecting ring is electrically connected with the first collection end, the handle inner segment is arranged through the connecting ring, the contact head is located on an inner side of the connecting ring and elastically and conductively connected with the connecting ring at one end, and the other end of the contact head is conductively and abutted against the handle inner segment.

[0019] As an optional technical scheme of the electric tap, a limiting groove is radially formed on the inner side wall of the connecting ring, one end of the contact head is arranged in the limiting groove and elastically connected with the groove bottom of the limiting groove, the contact head can slide along the limiting groove, and the other end protrudes from the inner side wall of the connecting ring and abuts against the inner segment of the handle.

[0020] As an optional technical scheme of the electric tap, the end face of the contact head abutting against the inner segment of the handle is a spherical face; and / or,

[0021] The limiting grooves are uniformly and circumferentially spaced apart, and each limiting groove is provided with one contact head.

[0022] As an optional technical scheme of the electric tap, the electric tap further comprises a limiting piece arranged in the handle and electrically connected with the second collecting end, the second contact part is arranged in the limiting piece, an inclined annular face is arranged on the outer side wall of the second contact part, the diameter of the inclined annular face decreases from the proximal end to the distal end, the inner side wall of the limiting piece is a limiting annular face, and the limiting annular face is in electrically conductive contact with the inclined annular face.

[0023] As an optional technical scheme of the electric tap, the electric tap further comprises a prompt lamp, the light-emitting end of the prompt lamp is exposed to the handle, and the prompt lamp is configured to display different colors when the tap body contacts different tissues of a patient; and / or,

[0024] The proximal end of the tap body is arranged out of the handle and coaxially connected with a quick connector at the end, the quick connector is used for connecting with an external driving piece, and the external driving piece can drive the tap body to rotate.

[0025] The electric tap has the following beneficial effects:

[0026] The electric tap provided by the present invention includes a handle, a tap body, a detection assembly and an auxiliary part. The distal end of the auxiliary part and the distal end of the tap body can contact the bone surface of the patient at the same time, and as the tap body is fed, the auxiliary part moves along the tap body, and the scale mark corresponding to the proximal end of the auxiliary part changes therewith, and the operator can indirectly obtain the tapping depth by the difference between the scale marks, ensuring that the threaded hole of the target depth can be obtained, which is conducive to realizing a reliable connection between the screw and the threaded hole, ensuring the surgical effect, and there is no need to repeat the measurement and tapping operation, which is conducive to shortening the operation time, improving efficiency, reducing the doctor's workload, reducing the number of times the doctor and the patient are exposed to X-rays, and ensuring safety. In addition, when the distal end of the tap body contacts the patient, the distal end of the first contact portion and the distal end of the second contact portion can contact the patient at the same time. The first and second collection ends of the current collection component are electrically connected to the first and second contact portions, respectively. When the first and second contact portions simultaneously contact the patient, a circuit is formed between the detection component, the first and second contact portions, and the patient. Due to the different electrical resistances of the patient's cortical bone, cancellous bone, blood, soft tissue, and other tissues, the current collection component collects different current values ​​when the distal end of the tap body contacts different tissue structures of the patient. Based on the collected current values, the operator can determine which tissue within the patient's body the distal end of the tap body is in contact with, thereby facilitating timely determination of when to stop feeding the tap, ensuring that the deepest part of the threaded hole is within the cancellous bone, and reducing the possibility of the tap body abrading the cortical bone or penetrating the patient's cortical bone and contacting soft tissue or blood. The electric tap provided by the present invention has a simple structure and is easy to operate, thereby ensuring surgical safety and surgical effects, ensuring smooth operation, and facilitating patient recovery. It also shortens the operation time, improves efficiency, and reduces the workload of doctors. In addition, the electric tap can monitor at any time which tissues the tap contacts during the operation, thereby reducing the possibility of causing additional damage to the patient and the influence of the operator's subjective factors on the surgical effect. At the same time, it also reduces the number of times X-ray fluoroscopy is used for observation, reduces the exposure time of the operator and the patient to radiation, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of an electric tap provided in an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0029] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0030] Figure 4 is a structural diagram of a handle and a detection assembly provided by an embodiment of the present invention;

[0031] Figure 5 1 is a schematic structural diagram of a tap body provided by an embodiment of the present invention;

[0032] Figure 6 is a cross-sectional view of a tap body provided by an embodiment of the present invention;

[0033] Figure 7 is a structural diagram of a connection assembly provided by an embodiment of the present invention;

[0034] Figure 8 is a cross-sectional view of a connection assembly provided by an embodiment of the present invention;

[0035] Figure 9 is a cross-sectional view of a position limiting member provided by an embodiment of the present invention;

[0036] Figure 10 It is a cross-sectional view of the auxiliary component provided by an embodiment of the present invention.

[0037] In the picture:

[0038] 1. Handle; 11. Mounting portion; 111. First channel section; 112. Second channel section; 113. Third channel section; 12. Grip;

[0039] 2. Tap body; 21. First contact portion; 211. Ring platform; 212. Spacer; 213. Stop shoulder; 22. Second contact portion; 221. Inclined annular surface; 222. Helical thread; 23. Insulation layer; 24. Scale mark;

[0040] 3. Detection component; 31. Power supply; 32. Current acquisition component; 33. Controller;

[0041] 4. Connecting assembly; 41. Contact head; 42. Connecting ring; 421. Limiting groove; 43. Spring;

[0042] 5. Limiting member; 51. Inner ring; 511. Limiting ring surface; 52. Outer ring; 521. Protruding ring portion; 5211. Inner ring surface; 53. Roller;

[0043] 6. Warning light; 7. Quick connector; 71. Operation surface;

[0044] 8. Auxiliary parts; 81. Sealing wall; 811. Through hole; 82. Support ring edge. DETAILED DESCRIPTION

[0045] Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based upon the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall into the scope of the present application.

[0046] In the description of the present application, unless specifically defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] The technical solutions of the present application will be further described below by combining the drawings and through specific embodiments.

[0049] The present embodiment provides an electric tap. Specifically, as shown in Figures 1-10As shown, the electric tap comprises a handle 1, a tap body 2, a detection assembly 3 and an auxiliary component 8. The tap body 2 is rotatably mounted on the handle 1, and a spiral tooth 222 is provided on the distal side wall of the tap body 2, which forms a tap head for tapping. A plurality of scale marks 24 are provided on the side wall of the tap body 2 located on the proximal side of the spiral tooth 222, and the plurality of scale marks 24 are evenly spaced along the axial direction of the tap body 2. The tap body 2 includes a first contact portion 21 and a second contact portion 22, and the first contact portion 21 and the second contact portion 22 are insulated and connected, and the first contact portion 21 and the second contact portion 22 both extend to the distal end of the tap body 2; the detection component 3 is placed inside the handle 1, and the detection component 3 includes a current collection component 32, and the first collection end of the current collection component 32 is electrically connected to the first contact portion 21, and the second collection end of the current collection component 32 is electrically connected to the second contact portion 22; the distal end of the auxiliary component 8 can abut the patient's bone surface, the auxiliary component 8 is insulated and connected to the tap body 2 and blocks at least part of the side wall of the tap body 2, and the auxiliary component 8 can move along the axial direction of the tap body 2.

[0050] The electric tap provided by the present embodiment comprises a handle 1, a tap body 2, a detection assembly 3 and an auxiliary part 8. The distal end of the auxiliary part 8 and the distal end of the tap body 2 can contact the bone surface of the patient at the same time, and as the tap body 2 is fed, the auxiliary part 8 moves along the tap body 2, and the scale mark 24 corresponding to the proximal end of the auxiliary part 8 changes therewith, and the operator can indirectly obtain the tapping depth by the difference between the scale marks 24, thereby ensuring that the threaded hole of the target depth can be obtained, which is conducive to achieving a reliable connection between the screw and the threaded hole, ensuring the surgical effect, and there is no need to repeat the measurement and tapping operations, which is conducive to shortening the operation time, improving efficiency, reducing the doctor's workload, reducing the number of times the doctor and the patient are exposed to X-rays, and ensuring safety. In addition, when the distal end of the tap body 2 contacts the patient, the distal end of the first contact portion 21 and the distal end of the second contact portion 22 can contact the patient at the same time. The first and second collection ends of the current collection element 32 are electrically connected to the first and second contact portions 21, 22, respectively. When the first and second contact portions 21, 22 simultaneously contact the patient, a circuit is formed between the detection assembly 3, the first and second contact portions 21, 22, and the patient. Due to the different electrical resistances of the patient's cortical bone, cancellous bone, blood, and soft tissue, when the distal end of the tap body 2 contacts different tissue structures of the patient, the current values ​​within the circuit differ, meaning that the current values ​​collected by the current collection element 32 differ. Based on the current values ​​collected by the current collection element 32, the operator can determine which tissue within the patient's body the distal end of the tap body 2 is in contact with, thereby facilitating timely determination of when to stop feeding the tap. This ensures that the deepest part of the threaded hole is within the cancellous bone, reducing the possibility of the tap body 2 abrading the cortical bone or penetrating the patient's cortical bone and contacting soft tissue or blood.

[0051] That is, the electric tap provided in this embodiment has a simple structure and is easy to operate, which ensures the safety and effectiveness of the operation, ensures the smooth progress of the operation, is conducive to the patient's recovery, shortens the operation time, improves efficiency, reduces the doctor's workload, reduces the possibility of causing additional damage to the patient, and reduces the influence of the operator's subjective factors on the operation effect. At the same time, it also reduces the number of times X-ray fluoroscopy is used for observation, reduces the exposure time of the operator and the patient to radiation, and improves safety.

[0052] In addition, if Figures 1-4 As shown, the detection assembly 3 also includes a power supply 31, which is electrically connected to a current collection element 32. The power supply 31 is capable of powering the circuit formed between the detection assembly 3, the first contact portion 21, the second contact portion 22, and the patient. In this embodiment, the structure of the current collection element 32 and the connection circuit between the current collection element 32 and the power supply 31 are conventional and are not the focus of this embodiment, so they will not be detailed here.

[0053] It should be noted that the "proximal end" and "distal end" in this embodiment are relative to the operator. When the operator holds the electric tap, the end close to the operator is the proximal end, and the end away from the operator is the distal end. Figure 1 Taking the direction in the figure as an example, the left side is the proximal end of the electric tap, and the right side is the distal end of the electric tap.

[0054] It is understood that, due to the relatively high resistance of cortical bone, when the distal end of the tap body 2 contacts cortical bone, the current value collected by the current collection component 32 is less than the first threshold value. Due to the relatively low resistance of blood and soft tissue, when the distal end of the tap body 2 contacts blood and soft tissue, the current value collected by the current collection component 32 is greater than the second threshold value. Due to the relatively low resistance of cancellous bone, which is less than that of cortical bone but greater than that of blood and soft tissue, when the distal end of the tap body 2 contacts cancellous bone, the current value collected by the current collection component 32 is between the first and second threshold values. The first threshold value is less than the second threshold value.

[0055] Specifically, if Figure 1 As shown, the handle 1 includes a mounting portion 11 and a gripping portion 12. The mounting portion 11 is roughly cylindrical, and a channel is provided in the center of the mounting portion 11. The channel passes through the proximal end and the distal end of the mounting portion 11. The tap body 2 is passed through the channel of the mounting portion 11 and is detachably connected to the mounting portion 11. The gripping portion 12 is protrudingly provided on the outer wall of the mounting portion 11, which is convenient for the operator to hold. In this embodiment, the handle 1 is made of insulating material to prevent the detection component 3 from affecting the operator when it leaks electricity, thereby ensuring the safety of the operator, ensuring that the operator can operate stably, and ensuring the effect of the operation. The mounting portion 11 and the gripping portion 12 are integrally connected to facilitate production and processing. The handle 1 can be formed by injection molding or other molding processes, which are not limited here.

[0056] Furthermore, the detection component 3 is placed in the gripping portion 12, which improves space utilization. At the same time, appropriately increasing the thickness of the gripping portion 12 can improve the comfort of gripping, reduce the operator's fatigue, and also help to reduce the volume of the mounting portion 11, thereby reducing the range of the operator's field of view being blocked, which is beneficial to the smooth progress of the operation and improves practicality.

[0057] As a preferred solution, Figure 1 and Figure 4 As shown, the electric tap also includes a warning light 6, the light-emitting end of the warning light 6 can be exposed to the handle 1, and the warning light 6 is configured to display different colors when the tap body 2 contacts different tissues of the patient. When the current value collected by the current collection member 32 is less than the first threshold, the warning light 6 can emit a first color light, when the current value collected by the current collection member 32 is between the first threshold and the second threshold, the warning light 6 can emit a second color light, and when the current value collected by the current collection member 32 is greater than the second threshold, the warning light 6 can emit a third color light, and the first color light, the second color light and the third color light are different from each other. The warning light 6 is exposed to the handle, and the warning light 6 can emit different colors of light according to the current collected by the current collection member 32, making it easy for the operator to observe and judge when to stop feeding the electric tap, reducing the possibility of the tap body 2 wearing the cortical bone or penetrating the patient's cortical bone to contact soft tissue or blood, reducing the possibility of causing additional damage to the patient, ensuring the safety and effectiveness of the operation, ensuring the smooth progress of the operation, and facilitating the patient's recovery.

[0058] In this embodiment, the warning light 6 is mounted on the grip portion 12 , partially embedded in the grip portion 12 , and the light-emitting end of the warning light 6 is exposed on the proximal side wall of the grip portion 12 , further facilitating observation by the operator. Figure 4 The light emitting end of the warning light 6 is not shown.

[0059] In this embodiment, the first color light emitted by the warning light 6 is orange light, the second color light emitted is green light, and the third color light emitted is red light. In other embodiments, the color of the light emitted by the warning light 6 can be other colors, which is not limited here.

[0060] Further, the detection assembly 3 further comprises a controller 33 located in the holding portion 12 and electrically connected with the current collecting piece 32 and the prompt light 6, the controller 33 can control the prompt light 6 to emit light of different colors according to the current value collected by the current collecting piece 32. The controller 33 can be a single-chip microcomputer, and the structure of the prompt light 6, the specific model of the controller 33, the structure of the controller 33, the connection circuit of the controller 33 and the prompt light 6, and the control principle of the controller 33 can all adopt the prior art, which is not the protection focus of the embodiment and will not be described here.

[0061] In other embodiments, the current collecting piece 32 can also be electrically connected or signal-connected with an external display, and the display directly displays the current value collected by the current collecting piece 32. In this case, the electric tap can also not be provided with the prompt light 6, which is not limited here.

[0062] It can be understood that the tap body 2 is made of metal material, which realizes the electrical conductivity between the tap body 2 and the patient, guarantees the durability of the tap body 2, and reduces the replacement frequency.

[0063] Further, the tap body 2 is detachably connected with the handle 1, when the spiral teeth 222 on the tap body 2 are blunt, only the tap body 2 can be replaced, and the handle 1 can continue to be used, which reduces the cost, is convenient for cleaning and disinfection, and also facilitates the replacement of different tap bodies 2 according to the required opening diameter of the threaded hole, improves the practicability, and expands the application range.

[0064] As a preferred solution, as shown in Figure 2 、 3 , 5, 6, the second contact portion 22 is sleeved on the first contact portion 21. Preferably, the first contact portion 21 is coaxially arranged in the second contact portion 22, and the distal end of the first contact portion 21 is exposed at the distal end of the second contact portion 22. An insulating layer 23 is arranged between the first contact portion 21 and the second contact portion 22, and the spiral teeth 222 are formed on the outer side wall of the distal end of the second contact portion 22. The above structure is convenient for production and processing, and the first contact portion 21 and the second contact portion 22 will not be easily separated, which guarantees the stability of the structure of the tap body 2, avoids the formation of a joint on the outer side wall of the tap body 2, avoids unnecessary damage to the patient, guarantees the surgical effect, and is beneficial to the recovery of the patient.

[0065] In order to enable the tap body 2 to tap smoothly, the distal end of the tap body 2 is usually provided with a sharp corner. In the embodiment, the first contact portion 21 is in the shape of a round bar, the second contact portion 22 is in the shape of a cylinder, the first contact portion 21 is arranged in the second contact portion 22, i.e. the distal end of the first contact portion 21 is located at the center of the distal end of the second contact portion 22, and the distal end face of the first contact portion 21 is a tapered face, the sharp corner of the tapered face is arranged to protrude from the distal end of the second contact portion 22, thereby ensuring the tapping effect.

[0066] Further, the insulating layer 23 is an elastic insulating sleeve arranged on the first contact portion 21, which can be made of rubber, and the gap between the first contact portion 21 and the second contact portion 22 is smaller than the thickness of the insulating layer 23, so that the bar-shaped structure formed by the elastic insulating sleeve and the first contact portion 21 can be connected to the second contact portion 22 through interference fit. Alternatively, the first contact portion 21 is coated with an insulating coating layer, the insulating coating layer forms the insulating layer 23, and a glue layer is coated on the insulating coating layer to fixedly connect the first contact portion 21 and the second contact portion 22. Alternatively, there is a gap between the first contact portion 21 and the second contact portion 22, and the gap is directly filled with insulating glue, which forms the insulating layer 23 after curing. In other embodiments, the insulating layer 23 can also be formed in other forms, as long as it can ensure that the first contact portion 21 and the second contact portion 22 can move synchronously.

[0067] In other embodiments, the first contact portion 21 and the second contact portion 22 can also be arranged side by side along the radial direction of the tap body 2, and in this case, the insulating layer 23 arranged in front of the first contact portion 21 and the second contact portion 22 is preferably insulating glue, which plays a role of adhesion, and is not limited herein.

[0068] Preferably, the first contact portion 21 comprises a first shaft segment and a second shaft segment connected integrally, the distal end of the first shaft segment is coaxially connected to the proximal end of the second shaft segment, the outer diameter of the first shaft segment is larger than that of the second shaft segment, the distal end face of the second shaft segment is the distal end face of the first contact portion 21, the second shaft segment and part of the first shaft segment are located in the second contact portion 22, and part of the first shaft segment protrudes out of the second contact portion 22, i.e. the proximal end of the first contact portion 21 protrudes out of the proximal end of the second contact portion 22. A limiting shaft shoulder 213 is formed between the first shaft segment and the second shaft segment, the inner side wall of the second contact portion 22 is formed with an abutting face, the abutting face abuts against the limiting shaft shoulder 213, thereby limiting the installation of the first contact portion 21 and the second contact portion 22, and facilitating positioning assembly. It can be understood that the thickness of the insulating layer 23 is small, and the limiting shaft shoulder 213 covered by the insulating layer 23 can still abut against the abutting face, thereby achieving the limiting effect.

[0069] Further, the proximal end of the first contact portion 21 and the proximal end of the second contact portion 22 are both located inside the handle 1. The first contact portion 21 further comprises a third shaft segment, the distal end of the third shaft segment is coaxially connected with the proximal end of the first shaft segment, and the outer diameter of the third shaft segment is larger than the outer diameter of the first shaft segment. Part of the third shaft segment is located inside the handle 1, and the part of the third shaft segment and the part of the first shaft segment that pass through the second contact portion 22 form a handle inner segment, that is, the passing-through part of the first contact portion 21 that passes through the second contact portion 22 comprises the handle inner segment located inside the handle 1, and the first collecting end is electrically connected with the handle inner segment. The second collecting end is electrically connected with the part of the second contact portion 22 located inside the handle 1. With such a structure, the wires between the first collecting end and the second collecting end and the current collecting piece 32 are prevented from being exposed and are all built-in inside the handle 1, which ensures that the handle 1 is smooth in appearance and easy to hold, and also avoids that the first collecting end, the second collecting end and the wires protrude out of the side of the handle 1 and block the operator's field of view, thereby ensuring the treatment effect of the operation.

[0070] Preferably, as shown in Figure 1 , Figure 5 and Figure 6 , another part of the third shaft segment passes through the proximal end of the handle 1 to form a handle outer segment of the tap body 2, and the proximal end of the third shaft segment is coaxially connected with a quick connector 7, and the quick connector 7 can be connected with an external driving piece, and the external driving piece can drive the tap body 2 to rotate. That is, the proximal end of the tap body 2 passes through the handle 1 and is coaxially connected with the quick connector 7 at the end. The quick connector 7 is provided to facilitate the connection of the tap body 2 with the external driving piece, thereby improving the convenience of use. The quick connector 7 is in the shape of a cylinder, and an operating surface 71 is formed on the outer side wall thereof, the operating surface 71 is a flat surface and is provided in multiple along the circumference of the quick connector 7, which facilitates the clamping and fixing of the external driving piece and stably drives the tap body 2 to rotate. The external driving piece can be a motor or the like, and a clamping jaw is connected to the driving shaft of the motor, the clamping jaw can clamp the quick connector 7 through the operating surface 71, and the specific structure of the external driving piece can realize the clamping of the quick connector 7 and the driving of the tap body 2 to rotate, which is not limited herein.

[0071] In the present embodiment, a ring table 211 is protruded and arranged in a ring shape on the side wall of the handle inner segment, specifically, the part of the third shaft segment that protrudes from the first shaft segment forms the ring table 211, and there is a gap 212 between the ring table 211 and the second contact portion 22, that is, the third shaft segment and the second contact portion 22 are spaced apart to form the gap 212, which avoids hard collision between the first contact portion 21 and the second contact portion 22 during installation, and ensures the structural strength and durability of the tap body 2.

[0072] As a preferred solution, as shown in Figure 2 , Figure 7 and Figure 8As shown, the electric tap also includes a connecting component 4, which is placed in the handle 1. The connecting component 4 includes a contact head 41 and a connecting ring 42, the connecting ring 42 is electrically connected to the first collection end, the inner section of the handle is passed through the connecting ring 42, the contact head 41 is located on the inner side of the connecting ring 42 and one end is elastically and conductively connected to the connecting ring 42, and the other end of the contact head 41 is conductively abutted against the inner section of the handle. The above structural arrangement enables the contact head 41 to always and stably abut against the first contact portion 21, ensuring a stable electrical connection between the first collection end and the first contact portion 21, ensuring the accuracy of the current value collected by the current collection component 32, ensuring the function of the current collection component 32 to monitor at any time what kind of tissue the tap body 2 is in contact with during the operation, and ensuring the safety of the operation and the effect of the operation. In addition, connecting the first collection end to the connecting component 4 also avoids the entanglement of the wires caused by the direct connection between the first collection end and the first contact portion 21, avoids the breakage of the wires, and ensures the function of the current collection component 32 to collect current.

[0073] In this embodiment, the connecting ring 42 and the contact head 41 are both made of conductive material, such as stainless steel, which has high structural strength. Moreover, since the tap body 2 needs to rotate when drilling, the contact head 41 made of stainless steel is more wear-resistant.

[0074] As a preferred solution, the contact head 41 is placed in the interval 212, and the two sides of the interval 212 are the proximal end face of the second contact portion 22 and the distal end face of the third axis segment, respectively. This facilitates the determination of the installation position of the contact head 41 and facilitates assembly. It also avoids the connection component 4 from being separated from the tap body 2 when the electric tap is in use, thereby ensuring safety.

[0075] Preferably, the end surface of the contact head 41 that abuts against the inner section of the handle is a spherical surface, so that there is point contact between the contact head 41 and the tap body 2, reducing the contact area, thereby reducing the friction between the tap body 2 and the contact head 41, ensuring the smooth rotation of the tap body 2 and ensuring the punching efficiency.

[0076] Furthermore, a spring 43 is connected between the contact head 41 and the connecting ring 42, which realizes an elastic connection between the contact head 41 and the connecting ring 42, thereby simplifying the structure. The spring 43 can also be made of stainless steel, and the spring 43 is connected to the contact head 41 and the connecting ring 42 by welding.

[0077] Furthermore, a limiting groove 421 is radially provided on the inner side wall of the connecting ring 42. One end of the contact head 41 is placed in the limiting groove 421 and is elastically connected to the bottom of the limiting groove 421. The contact head 41 can slide along the limiting groove 421, and the other end protrudes from the inner side wall of the connecting ring 42 and abuts against the inner section of the handle. Since the outer diameter of the tap body 2 changes along the axial direction and is a non-constant value, multiple step structures are formed on the outer side wall of the tap body 2. When the tap body 2 is inserted into the channel of the handle 1, the limiting groove 421 is provided so that the contact head 41 can only move radially along the connecting ring 42, avoiding a step structure from interfering with the contact head 41 and causing the contact head 41 to deflect, ensuring that the contact head 41 can extend into the gap 212 and stably abut against the first contact portion 21, ensuring a stable conductive connection between the first collection end and the first contact portion 21, thereby ensuring the function of the current collection member 32 in collecting current. Specifically, one end of the spring 43 is connected to the bottom of the limiting groove 421 , and the other end is connected to the end of the contact head 41 .

[0078] Preferably, a plurality of limiting grooves 421 are evenly spaced along the circumference of the connecting ring 42, and a contact head 41 is disposed in each limiting groove 421. This increases the number of contact points between the contact head 41 and the tap body 2, and ensures the radial positional stability of the tap body 2 along the channel of the handle 1, thereby reducing the possibility of friction between the tap body 2 and the inner side wall of the channel of the handle 1, ensuring smooth rotation of the tap body 2 and ensuring tapping efficiency.

[0079] When the tap body 2 is mounted on the handle 1, the distal end of the tap body 2 first extends into the channel. In this embodiment, the connecting ring 42 of the connecting assembly 4 is embedded in the inner side wall of the channel of the handle 1, and six limiting grooves 421 are provided, with the contact heads 41 facing each other. When the spring 43 is in its natural state, the compression amount is 0, and the minimum distance H between a group of facing contact heads 41 is less than the outer diameter D of the portion of the tap body 2 located within the gap 212. When the compression amount of the spring 43 is at the maximum allowable value, the minimum distance between a group of facing contact heads 41 is not less than the maximum outer diameter of the second contact portion 22.

[0080] Preferably, the second collection terminal is electrically connected to the portion of the second contact portion 22 located within the handle 1. This structural arrangement prevents the second collection terminal and the wires between the second collection terminal and the current collection element 32 from being exposed. Both are internally located within the handle 1, ensuring a smooth and comfortable grip. It also prevents the second collection terminal and wires from protruding from the outside of the handle 1, obstructing the operator's field of view, thereby ensuring the therapeutic effect of the surgery.

[0081] As a preferred solution, Figure 3 and Figure 9As shown, the electric tapping device further includes a stopper 5, which is positioned within the handle 1 and electrically connected to the second collecting end. The stopper 5 is also electrically connected to the portion of the second contact portion 22 located within the handle 1, thereby achieving electrical connection between the second collecting end and the portion of the second contact portion 22 located within the handle 1. The second contact portion 22 is disposed through the stopper 5. An inclined annular surface 221 is provided on the outer wall of the second contact portion 22. The diameter of the inclined annular surface 221 decreases from the proximal end to the distal end. The inner wall of the stopper 5 is a stopper annular surface 511. The diameter of the stopper annular surface 511 decreases from the proximal end to the distal end. The stopper annular surface 511 is electrically bonded to the inclined annular surface 221, and the stopper annular surface 511 and the inclined annular surface 221 can be completely bonded. The setting of the limiting annular surface 511 and the inclined annular surface 221 ensures that when the tap body 2 is fed axially, the handle 1 can move synchronously with the tap body 2. The operator can prevent the tap body 2 from continuing to feed by ensuring that the handle is stationary, thereby limiting the tapping depth and achieving the goal of stopping the tapping. This reduces the possibility of the tap body 2 only needing to advance and causing wear on the cortical bone or penetrating the patient's cortical bone to contact soft tissue or blood, reduces the possibility of causing additional damage to the patient, ensures surgical safety and surgical results, ensures that the operation proceeds smoothly, and is beneficial to the patient's recovery. At the same time, when the tap body 1 needs to be pulled out, the handle 1 can also drive the tap body 2 to retreat synchronously for ease of operation. In this embodiment, the limiting member 5 is made of a conductive material, which can be stainless steel, and has a high structural strength.

[0082] Furthermore, the limiting member 5 is a bearing, which includes an inner ring 51, an outer ring 52, and a roller 53 rollingly disposed between the inner ring 51 and the outer ring 52. The inner sidewall of the inner ring 51 of the bearing is a limiting annular surface 511, and the outer ring 52 of the bearing is fixedly disposed within the handle 1. Using a bearing as the limiting member 5 further reduces the friction between the tap body 2 and the handle 1, thereby ensuring the tapping efficiency of the tap body 2.

[0083] A protruding ring portion 521 is provided along the inner sidewall of the outer ring 52, extending circumferentially. This protruding ring portion 521 is located distally from the inner ring 51, and the end face of the inner ring 51 abuts against the end face of the protruding ring portion 521. This serves to limit the position of the inner ring 51, preventing the inner and outer rings 51 and 52 from separating and deforming during the tap body 2's advancement, thereby ensuring the reliability and stability of the bearing structure. Furthermore, the diameter of the inner ring surface 5211 of the protruding ring portion 521 decreases from the proximal end to the distal end, and the inner ring surface 5211 is coplanar with the inner sidewall of the inner ring 51. This eliminates the formation of a ridge between the inner ring surface 5211 and the inner sidewall of the inner ring 51, preventing contact between the inclined ring surface 221 and the ridge and deformation of the tap body 2. It is understandable that the axial thickness of the protruding ring portion 521 is small, and the contact area between the tap body 2 and the protruding ring portion 521 is small, which reduces the influence of the friction force generated by the protruding ring portion 521 and the tap body 2 on the rotation of the tap body 2.

[0084] In this embodiment, the limiting shoulder 213 is disposed directly opposite the bearing. To facilitate processing, the wall thickness of the second contact portion 22 is uniform throughout, so that the second contact portion 22 forms a shoulder structure at the limiting shoulder 213. The shoulder structure is disposed directly opposite the protruding ring portion 521, and a rounded corner is provided at the edge of the shoulder structure, further reducing the contact area between the tap body 2 and the protruding ring portion 521, and further reducing the degree to which the friction generated by the protruding ring portion 521 and the tap body 2 affects the rotation of the tap body 2.

[0085] Specifically, if Figure 1 、 2 As shown in Figures 3, 4, 8 and 9, the outer ring 52 of the limiter 5 is embedded in the inner wall of the channel of the handle 1, and the limiter 5 is spaced apart on the distal side of the connecting assembly 4. The limiter 5, the connecting ring 42, the tap body 2 and the channel of the handle 1 are coaxially arranged. The tap body 2 and the channel of the handle 1 are spaced apart radially. The channel of the handle 1 is divided into three parts by the limiter 5 and the connecting assembly 4, which are the first channel section 111, the second channel section 112 and the third channel section 113 from the distal end to the proximal end. The diameters of the first channel section 111, the second channel section 112 and the third channel section 113 can be processed according to actual conditions to ensure that the tap body 2 can be installed smoothly.

[0086] like Figure 1 As shown, after the tap body 2 is mounted on the handle 1, the distal end of the tap body 2 extends out of the channel and is connected to the auxiliary member 8. As a preferred solution, Figure 1 and Figure 10As shown, the auxiliary member 8 is in a cylindrical shape and coaxially arranged with the tap body 2, a proximal end of the auxiliary member 8 is blocked by a blocking wall 81, the tap body 2 is rotatably arranged in the blocking wall 81, the blocking wall 81 is located at a proximal end side of the helical teeth 222 and the helical teeth 222 can abut against the blocking wall 81. The above structure can stably support the auxiliary member 8 on the bone surface of the patient, prevent the tap body 2 from being skewed, stably tap the blind hole by the tap body 2, ensure that the axis of the threaded hole coincides with the axis of the blind hole, thereby ensuring the quality of the threaded hole formed by the tap and the target depth of the threaded hole, preventing the screw from being skewed, facilitating the reliable connection between the screw and the threaded hole, ensuring the operation effect, avoiding the repeated tapping operation, shortening the operation time, improving the efficiency, reducing the working strength of the doctor, reducing the number of times that the doctor and the patient are exposed to X-rays, and ensuring safety. In addition, the blocking wall 81 can abut against the helical teeth 222 on one hand, preventing the auxiliary member 8 from being separated from the tap body 2, avoiding the need to install the auxiliary member 8 before each tapping, simplifying the operation process, further shortening the operation time, and on the other hand, the blocking wall 81 can also block the bone debris formed during tapping, avoiding the debris from falling into other parts of the patient's body, facilitating cleaning, avoiding the debris from splashing, avoiding the blocking of the operator's field of vision, and ensuring the operation effect. Specifically, the auxiliary member 8 is coaxially arranged outside the second contact portion 22.

[0087] In the embodiment, as shown in Figure 10 , a through hole 811 is formed in the blocking wall 81, and the through hole 811 is coaxially arranged with the auxiliary member 8. The tap body 2 is arranged in the through hole 811. The length of the auxiliary member 8 in the axial direction is greater than the length of the tap head in the axial direction.

[0088] In other embodiments, the auxiliary member 8 can also be in a sheet shape, and the auxiliary member 8 extends in the axial direction of the tap body 2. A connecting sheet is connected to the proximal end of the auxiliary member 8, the connecting sheet is perpendicular to the axial direction of the tap body 2, and a through hole 811 is formed in the connecting sheet for the tap body 2 to movably pass through.

[0089] In the embodiment, as shown in Figure 1 , Figure 5 and Figure 8 , the plurality of scale marks 24 are all annular lines around the circumference of the tap body 2, and are arranged at equal distances in the direction from the distal end to the proximal end of the tap body 2. For the convenience of description, the scale mark 24 close to the distal end of the tap body 2 is defined as an initial mark, the number "0" is marked at the initial mark, and the distance between two adjacent scale marks 24 can be set to any integer value between 1 mm and 5 mm. The number of scale marks 24 can be adaptively set according to requirements, and the scale marks 24 can be formed by pasting or spraying, which is not limited herein.

[0090] Preferably, when the distal end of the blocking member 8 is flush with the distal end of the tap body 2, the outer side wall of the blocking wall 81 is opposite to the initial mark. In other embodiments, the auxiliary member 8 is provided in a sheet shape. When the distal end of the blocking member 8 is flush with the distal end of the tap body 2, the outer side wall of the connecting sheet is opposite to the initial mark.

[0091] In the present embodiment, in order to reduce the frictional force generated between the tap body 2 and the auxiliary member 8, the hole diameter of the through hole 811 is greater than the outer diameter of the tap body 2, so that when the tap body 2 rotates, the side wall of the tap body 2 and the hole wall of the through hole 811 are spaced apart. In other embodiments, a linear bearing can also be provided in the through hole 811, the outer ring of the linear bearing is connected with the blocking wall 81, and the inner ring is connected with the tap body 2.

[0092] Further, the auxiliary member 8 and the tap body 2 are detachably connected, so that when sterilized, the tap body 2 and the auxiliary member 8 can be separated, ensuring the sterilization effect and preventing additional harm to the patient caused by incomplete sterilization.

[0093] In some embodiments, the auxiliary member 8 can include two semicircular clamps, the openings of the two semicircular clamps are oppositely arranged, and the two ends are correspondingly buckled and connected. One end of the two semicircular clamps is rotationally connected, and the other end can be detachably connected through a bolt, facilitating the disassembly of the auxiliary member 8. At this time, the blocking wall 81 includes two semicircular walls, the two semicircular walls are respectively connected with the two semicircular clamps, and semicircular holes are formed on the straight edges of the two semicircular walls. When the two semicircular clamps are correspondingly buckled and connected, the two semicircular holes are buckled to form the through hole 811.

[0094] As a preferred solution, as shown in Figure 1 and Figure 10 , a support ring edge 82 is annularly and protrudingly arranged on the outer side wall of the distal end of the auxiliary member 8, and the distal end face of the support ring edge 82 is flush with the distal end face of the auxiliary member 8. The above structure increases the contact area between the auxiliary member 8 and the bone surface of the patient, further ensures that the auxiliary member 8 can be stably supported on the bone surface of the patient, prevents the tap body 2 from being skewed, thereby ensuring the quality of the thread hole formed by the tap and the target depth of the thread hole, preventing the screw from being skewed, facilitating the reliable connection between the screw and the thread hole, ensuring the operation effect, avoiding repeated tapping operation, improving the efficiency, and reducing the working intensity. In the present embodiment, the auxiliary member 8, the blocking wall 81 and the support ring edge 82 are all made of insulating non-metallic materials, which ensures the insulation between the auxiliary member 8 and the tap body 2, and avoids affecting the current value collected by the current collecting member 32. Moreover, the auxiliary member 8, the blocking wall 81 and the support ring edge 82 are integrally connected.

[0095] ​Furthermore, a rubber pad can be provided on the distal end surface of the support ring 82 to prevent the support ring 82 from scratching the patient's bone surface, further preventing additional damage to the patient. Alternatively, the auxiliary member 8 and the support ring 82 can be directly made of rubber material, which is not limited here.

[0096] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An electric tap, characterized in that: include: handle (1); A tap body (2) is rotatably mounted on the handle (1), a spiral tooth (222) is provided on a distal side wall of the tap body (2), a plurality of scale marks (24) are provided on a side wall of the tap body (2) located proximal to the spiral tooth (222), the plurality of scale marks (24) are evenly spaced along the axial direction of the tap body (2), the tap body (2) comprises a first contact portion (21) and a second contact portion (22), the first contact portion (21) and the second contact portion (22) are insulated and connected, and both the first contact portion (21) and the second contact portion (22) extend to the distal end of the tap body (2); A detection component (3) is placed inside the handle (1), the detection component (3) comprising a current collecting component (32), a first collecting end of the current collecting component (32) being electrically connected to the first contact portion (21), and a second collecting end of the current collecting component (32) being electrically connected to the second contact portion (22); An auxiliary member (8), the distal end of which is capable of abutting against a bone surface of a patient, the auxiliary member (8) being insulated and connected to the tap body (2) and shielding at least a portion of the side wall of the tap body (2), and the auxiliary member (8) being capable of moving along the axial direction of the tap body (2); The second contact portion (22) is sleeved on the first contact portion (21), and the distal end of the first contact portion (21) is exposed outside the second contact portion (22); an insulating layer (23) is provided between the first contact portion (21) and the second contact portion (22); and the spiral tooth (222) is formed on the outer side wall of the distal end of the second contact portion (22); The electric tapping device further comprises a limiting member (5), the limiting member (5) being placed in the handle (1) and electrically connected to the second collecting end, the second contact portion (22) being passed through the limiting member (5), an inclined annular surface (221) being provided on the outer wall of the second contact portion (22), the diameter of the inclined annular surface (221) decreasing from the proximal end to the distal end, the inner wall of the limiting member (5) being a limiting annular surface (511), the diameter of the limiting annular surface (511) decreasing from the proximal end to the distal end, and the limiting annular surface (511) being electrically conductively bonded to the inclined annular surface (221); The limiting member (5) is a bearing, comprising an inner ring (51), an outer ring (52), and a roller (53) rollingly arranged between the inner ring (51) and the outer ring (52); the inner side wall of the inner ring (51) of the bearing is the limiting annular surface (511), and the outer ring (52) of the bearing is fixedly arranged in the handle (1).

2. The electric tap according to claim 1, characterized in that: The auxiliary part (8) is cylindrical and is coaxially arranged with the tap body (2). The proximal end of the auxiliary part (8) is sealed with a sealing wall (81). The tap body (2) is rotatably penetrated through the sealing wall (81). The sealing wall (81) is located on the proximal side of the spiral tooth (222) and the spiral tooth (222) can abut against the sealing wall (81).

3. The electric tap according to claim 2, characterized in that: A supporting ring edge (82) is provided on the outer side wall of the distal end of the auxiliary member (8) in an annular direction, and the distal end surface of the supporting ring edge (82) is flush with the distal end surface of the auxiliary member (8); and / or, The auxiliary component (8) is detachably connected to the tap body (2).

4. The electric tap according to claim 1, characterized in that: The proximal end of the second contact portion (22) is located in the handle (1), the proximal end of the first contact portion (21) passes through the proximal end of the second contact portion (22), and the portion of the first contact portion (21) passing through the second contact portion (22) includes an inner section of the handle located in the handle (1), the first collecting end is electrically connected to the inner section of the handle, and the second collecting end is electrically connected to the portion of the second contact portion (22) located in the handle (1).

5. The electric tap according to claim 4, characterized in that: The electric tap further comprises a connecting assembly (4), the connecting assembly (4) being disposed in the handle (1), the connecting assembly (4) comprising a contact head (41) and a connecting ring (42), the connecting ring (42) being electrically connected to the first collecting end, the inner section of the handle being passed through the connecting ring (42), the contact head (41) being located inside the connecting ring (42) and having one end elastically and electrically conductively connected to the connecting ring (42), and the other end of the contact head (41) being in conductive contact with the inner section of the handle.

6. The electric tap according to claim 5, characterized in that: A limiting groove (421) is radially provided on the inner side wall of the connecting ring (42), one end of the contact head (41) is placed in the limiting groove (421) and elastically connected to the bottom of the limiting groove (421), and the contact head (41) can slide along the limiting groove (421), and the other end protrudes from the inner side wall of the connecting ring (42) and abuts against the inner section of the handle.

7. The electric tap according to claim 6, characterized in that: The end surface of the contact head (41) abutting against the inner section of the handle is a spherical surface; and / or, A plurality of the limiting grooves (421) are evenly spaced along the circumference of the connecting ring (42), and a contact head (41) is provided in each limiting groove (421).

8. The electric tap according to any one of claims 1 to 7, characterized in that: The electric tap further comprises a prompt light (6), a light-emitting end of the prompt light (6) being exposed on the handle (1), and the prompt light (6) being configured to display different colors when the tap body (2) contacts different tissues of the patient; and / or, The proximal end of the tap body (2) passes through the handle (1) and is coaxially connected to a quick connector (7) at its end. The quick connector (7) is used to connect to an external drive component, and the external drive component can drive the tap body (2) to rotate.

Images