Surgical screwdriver

Abstract

The utility model relates to medical appliance technical field provides a screwdriver for operation, include: handle subassembly, tool bit and spacing sleeve. Handle subassembly includes first handle and connecting rod, and the first end of connecting rod is connected with first handle, tool bit is transmission connection with the second end of connecting rod, and tool bit is used for connecting with screw cap, and the part of spacing sleeve is set in the outside of connecting rod, and the other part is set in the outside of tool bit, and connecting rod is used for rotating around the first axis to cooperate with the guidance of spacing sleeve, and drives tool bit to rotate around the second axis, first axis extends along the extension direction of connecting rod, and second axis extends along the extension direction of tool bit, and second axis is arranged at the angle with first axis. The utility model discloses screwdriver for operation, and first handle and connecting rod and tool bit can rotate around different axes, and through the angle between connecting rod and tool bit of reasonable setting, the user can screw first handle to carry out the screwing of screw in the inclined hole position through tool bit, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical instrument technology, and in particular to a surgical screwdriver. Background Technology

[0002] During surgery (such as orthopedic surgery), screwdrivers are often needed to remove and install screws. In some cases, medical screwdrivers need to be tilted relative to the vertical direction to align with the screw mounting holes, making screw placement and tightening very inconvenient. Utility Model Content

[0003] This utility model provides a surgical screwdriver to solve the problem in some usage scenarios of the prior art that it is inconvenient to place and tighten the screw because the medical screwdriver needs to be tilted to align with the screw mounting hole.

[0004] This utility model provides a surgical screwdriver, comprising: A rotating handle assembly includes a first handle and a connecting rod, wherein a first end of the connecting rod is connected to the first handle; The cutting head is connected to the second end of the connecting rod and is used to connect with the nut. A limiting sleeve, a portion of which is sleeved on the outside of the connecting rod and the other portion of which is sleeved on the outside of the cutter head; The connecting rod is used to rotate about the first axis to cooperate with the guidance of the limiting sleeve and drive the cutter head to rotate about the second axis; The first axis extends along the extension direction of the connecting rod, the second axis extends along the extension direction of the cutter head, and the second axis is set at an angle to the first axis.

[0005] According to the present invention, the surgical screwdriver has a blade head that is rotatably connected to the second end of the connecting rod about a third axis, wherein the third axis is set at an angle to the first axis and the second axis respectively; The limiting sleeve has a first limiting hole and a second limiting hole that are interconnected. The first limiting hole extends along the first axis and the connecting rod passes through the first limiting hole. The second limiting hole extends along the second axis and the cutting head passes through the second limiting hole.

[0006] The surgical screwdriver according to this utility model also includes: The second handle is connected to the limiting sleeve and is perpendicular to the first handle.

[0007] According to the present invention, the second handle is rotatably connected to the limiting sleeve around the first axis, and a locking mechanism is provided between the second handle and the limiting sleeve. The locking mechanism can switch between a locked state and an unlocked state; when the locking mechanism is in the locked state, the second handle and the limiting sleeve are fixed to each other; when the locking mechanism is in the unlocked state, the second handle can rotate relative to the limiting sleeve.

[0008] According to the surgical screwdriver of this utility model, the locking mechanism includes: An elastic element, the first end of which abuts against the second handle; A connector is movably disposed on the second handle, and the connector abuts against the second end of the elastic member; the outer peripheral wall of the limiting sleeve is provided with a plurality of slots spaced apart along the circumferential direction, and the elastic member is used to drive the connector to be selectively inserted into the slot.

[0009] According to the surgical screwdriver of this utility model, the second handle includes: Grip element; A connector, one end of which is connected to the gripper and the other end of which is rotatably connected to the limiting sleeve; The first end of the elastic element abuts against the end of the gripping element; a portion of the structure of the plug and the elastic element are sleeved on the outside of the connector.

[0010] According to the surgical screwdriver of this utility model, the connector includes: A sleeve is fitted onto the connector, with the first end of the sleeve abutting against the second end of the elastic member; A plug-in piece is provided at the second end of the socket and is used to be inserted into the slot.

[0011] According to the present invention, the first handle and the connecting rod are detachably connected.

[0012] According to the present invention, the first handle and the connecting rod are threadedly connected, and the outer peripheral wall of the connecting rod is provided with a screwing structure that protrudes outward relative to the connecting rod.

[0013] According to the present invention, the screwdriver for surgery has a cross-shaped screw-tightening structure.

[0014] This surgical screwdriver, by connecting the connecting rod and the cutting head at an angle, and fitting a limiting sleeve around the outside of the connecting rod and the cutting head, allows the user to hold the first handle connected to the connecting rod with one hand, align the cutting head with the screw, and then hold the limiting sleeve with the other hand. Rotating the first handle drives the connecting rod and the cutting head to rotate around a first axis and a second axis respectively, thus enabling the cutting head to tighten the screw. As can be seen, this surgical screwdriver allows the first handle, connecting rod, and cutting head to rotate around different axes when tightening screws. By reasonably setting the angle between the connecting rod and the cutting head, the user can rotate the first handle vertically or horizontally to tighten the screw in the inclined hole through the cutting head, making it more convenient to use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a surgical screwdriver provided in an embodiment of this utility model.

[0017] Figure 2 This is an exploded view of the surgical screwdriver provided in this embodiment of the utility model.

[0018] Figure label: 1. Surgical screwdriver; 11. Rotary handle assembly; 111. First handle; 112. Connecting rod; 1121. Tightening mechanism; 12. Blade tip; 13. Limiting sleeve; 131. Slot; 14. Second handle; 141. Grip; 142. Connector; 15. Locking mechanism; 151. Elastic element; 152. Connector; 1521. Socket; 1522. Connecting piece. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The following is combined with Figures 1-2 This invention describes a surgical screwdriver.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a surgical screwdriver 1, including: a handle assembly 11, a cutting head 12, and a limiting sleeve 13. The handle assembly 11 includes a first handle 111 and a connecting rod 112, with the first end of the connecting rod 112 connected to the first handle 111; the cutting head 12 is kinetically connected to the second end of the connecting rod 112, and the cutting head 12 is used to connect with a nut; a portion of the limiting sleeve 13 is sleeved on the outside of the connecting rod 112, and another portion is sleeved on the outside of the cutting head 12; the connecting rod 112 is used to rotate around a first axis to cooperate with the guidance of the limiting sleeve 13, driving the cutting head 12 to rotate around a second axis; the first axis extends along the extension direction of the connecting rod 112 (e.g., ...). Figure 1 and Figure 2 The middle X-axis), and the second axis extends along the extension direction of the cutter head 12 (as shown in the figure). Figure 1 and Figure 2 The second axis is set at an angle to the first axis (Y-axis).

[0022] In this embodiment, the tip of the cutter head 12 has a structure adapted to the nut of the screw for connection with the nut. For example, the tip of the cutter head 12 can be cross-shaped to fit into the cross groove on the top of the nut. Optionally, the tip of the cutter head 12 can be provided with a magnetic structure for picking up the screw so that the screw can be placed in the mounting hole for screwing.

[0023] When picking up and tightening the screw, the first handle 111 is for the user to hold and rotate. The first handle 111 is connected to the first end of the connecting rod 112 so that the connecting rod 112 can rotate around the first axis when rotated. The connecting rod 112 can drive the cutting head 12 to rotate when rotated. At the same time, a limiting sleeve 13 is sleeved on the outside of the connecting rod 112 and the cutting head 12. The limiting sleeve 13 is for the user to hold so as to prevent the limiting sleeve 13 from rotating with the connecting rod 112. When the limiting sleeve 13 remains stationary, it can limit the rotation direction of the cutting head 12, preventing the cutting head 12 from rotating around the first axis with the connecting rod 112, so that the cutting head 12 can rotate along its own extension direction (i.e., the second axis) to tighten the screw.

[0024] Furthermore, in this embodiment, the cutter head 12 and the connecting rod 112 are set at a certain angle. The angle between the cutter head 12 and the connecting rod 112 can be set according to the mounting hole position of the screw on the product to which they are adapted, so that when the cutter head 12 is aligned with the mounting hole position, the connecting rod 112 and the first handle 111 can be kept in a posture that is convenient for the user to operate (for example, the connecting rod 112 and the first handle 111 are placed vertically or horizontally).

[0025] The surgical screwdriver 1 of this invention connects the connecting rod 112 and the cutting head 12 at an angle, and a limiting sleeve 13 is fitted on the outside of the connecting rod 112 and the cutting head 12. After the user holds the first handle 111 connected to the connecting rod 112 with one hand, aligns the cutting head 12 with the screw, and then holds the limiting sleeve 13 with the other hand, rotating the first handle 111 to drive the connecting rod 112 and the cutting head 12 to rotate around a first axis and a second axis respectively, thereby enabling the cutting head 12 to tighten the screw. As can be seen, the surgical screwdriver 1 of this invention allows the first handle 111, the connecting rod 112, and the cutting head 12 to rotate around different axes when tightening screws. By reasonably setting the angle between the connecting rod 112 and the cutting head 12, the user can rotate the first handle 111 vertically or horizontally to tighten the screw in the inclined hole through the cutting head 12, making it more convenient to use.

[0026] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the cutter head 12 is rotatably connected to the second end of the connecting rod 112, and the cutter head 12 can rotate relative to the connecting rod 112 around a third axis (e.g., Figure 1 and Figure 2 The Z-axis rotates, and the third axis is set at an angle to the first axis and the second axis respectively; the limiting sleeve 13 is provided with a first limiting hole and a second limiting hole that are interconnected. The first limiting hole extends along the first axis, and the connecting rod 112 passes through the first limiting hole; the second limiting hole extends along the second axis, and the cutter head 12 passes through the second limiting hole.

[0027] In this embodiment, the connecting rod 112 passes through the first limiting hole extending along the first axis. Under the limitation of the hole wall, it can only rotate relative to the limiting sleeve 13 around the first axis. The cutting head 12 passes through the second limiting hole extending along the second axis. Under the limitation of the hole wall, it can only rotate relative to the limiting sleeve 13 around the second axis. When the user uses the surgical screwdriver 1 to tighten the screw, he / she needs to hold the first handle 111 and the limiting sleeve 13 respectively. While keeping the limiting sleeve 13 stationary, the user tightens the first handle 111. The first handle 111 drives the connecting rod 112 to rotate relative to the limiting sleeve 13 around the first axis. Under the drive of the connecting rod 112 and the guidance of the limiting sleeve 13, the cutting head 12 rotates relative to the connecting rod 112 around the third axis (that is, rotates relative to the limiting sleeve 13 around the second axis) in order to tighten the screw.

[0028] In some embodiments, such as Figure 1 and Figure 2 As shown, the second end of the connecting rod 112 has a U-shaped opening, and a rotating shaft extending along the third axis is provided inside the U-shaped opening. The rotating shaft passes through the shaft hole on the cutter head 12 and is rotatably connected to the cutter head 12.

[0029] In some embodiments, such as Figure 1 and Figure 2 As shown, the surgical screwdriver 1 also includes a second handle 14, which is connected to the limiting sleeve 13 and is perpendicular to the first handle 111.

[0030] In this embodiment, by connecting a second handle 14 perpendicular to the first handle 111 to the limiting sleeve 13, the user can maintain the position of the limiting sleeve 13 by holding the second handle 14, which is more convenient to operate and helps to prevent the limiting sleeve 13 from slipping due to the user's unstable grip when twisting.

[0031] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the second handle 14 is rotatably connected to the limiting sleeve 13 around the first axis, and a locking mechanism 15 is provided between the second handle 14 and the limiting sleeve 13; the locking mechanism 15 can switch between a locked state and an unlocked state; when the locking mechanism 15 is in the locked state, the second handle 14 and the limiting sleeve 13 are fixed to each other; when the locking mechanism 15 is in the unlocked state, the second handle 14 can rotate relative to the limiting sleeve 13.

[0032] In this embodiment, the second handle 14 is rotatably connected to the limiting sleeve 13, and a locking mechanism 15 is provided between the second handle 14 and the limiting sleeve 13. When the locking mechanism 15 is switched to the locked state, it can lock the second handle 14 and the limiting sleeve 13, so that the user can fix the limiting sleeve 13 by holding the second handle 14. When the locking mechanism 15 is switched to the unlocked state, it can release the second handle 14 and the limiting sleeve 13, so that the user can rotate relative to the limiting sleeve 13 to adjust the angle of the second handle 14, thereby adjusting the relative angle between the second handle 14 and the blade head 12. In actual use, the user can first switch the locking mechanism 15 to the unlocked state, then adjust the position of the second handle 14 on the limiting sleeve 13 according to the actual usage needs, and then switch the locking mechanism 15 to the locked state, so that the user can subsequently grip the first handle 111 and the second handle 14 respectively.

[0033] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the locking mechanism 15 includes: an elastic member 151 and a plug member 152. The first end of the elastic member 151 abuts against the second handle 14. The plug member 152 is movably disposed on the second handle 14 and abuts against the second end of the elastic member 151. The outer peripheral wall of the limiting sleeve 13 is provided with a plurality of slots 131 spaced apart along the circumferential direction. The elastic member 151 is used to drive the plug member 152 to be selectively inserted into the slot 131.

[0034] In this embodiment, a movable connector 152 is provided on the second handle 14, and multiple slots 131 adapted to the connector 152 are constructed circumferentially on the outer peripheral wall of the limiting sleeve 13. When the connector 152 and the slot 131 are separated, the second handle 14 can rotate around the limiting sleeve 13 to adjust its position. After adjusting to a suitable position, the connector 152 can be inserted into the corresponding slot 131 to lock the limiting sleeve 13 and the second handle 14. At the same time, an elastic member 151 is provided between the second handle 14 and the connector 152. When the elastic member 151 is not subjected to external force, it can push the connector 152 toward the slot 131 so that the connector 152 is inserted into the slot 131, preventing the connector 152 from loosening and separating from the slot 131. When the user needs to adjust the position of the second handle 14, the elastic member 151 can be compressed toward the second handle 14 so that the connector 152 can disengage from the slot 131.

[0035] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the second handle 14 includes: a grip 141 and a connector 142; one end of the connector 142 is connected to the grip 141, and the other end is rotatably connected to the limiting sleeve 13; the first end of the elastic member 151 abuts against the end of the grip 141; a portion of the structure of the plug 152 and the elastic member 151 are sleeved on the outside of the connector 142.

[0036] In this embodiment, the grip 141 is used for the user to hold, and the connector 142 is a transitional connection structure between the grip 141 and the limiting sleeve 13. The size of the end of the grip 141 connected to the connector 142 is larger than the end size of the connector 142 to form a structure similar to a shoulder. The elastic member 151 is sleeved on the outside of the connector 142 so as to abut against the end of the grip 141. Part of the structure of the plug 152 is also sleeved on the outside of the connector 142. The connector 142 can be used to guide the movement direction of the elastic member 151 and the plug 152 to prevent the elastic member 151 and the plug 152 from tilting and affecting the locking and unlocking of the locking mechanism 15.

[0037] In some embodiments, such as Figure 1 and Figure 2 As shown, the connector 152 includes a socket 1521 and a plug piece 1522. The socket 1521 is sleeved on the connector 142, and the first end of the socket 1521 abuts against the second end of the elastic member 151. The plug piece 1522 is disposed at the second end of the socket 1521 and is used to be inserted into the slot 131.

[0038] In this embodiment, by fitting the socket 1521 onto the connector 142, the movement direction of the plug 152 is restricted by the cooperation between the socket 1521 and the connector 142. The plug piece 1522 is used to fit into the slot 131 and is inserted into the slot 131 to fix the relative position of the second handle 14 and the limiting sleeve 13.

[0039] In one specific embodiment, the connector 142 includes a connected connecting rod and a collar. One end of the connecting rod is connected to the gripper 141, and the other end is connected to the collar. The collar is sleeved on the limiting sleeve 13. The elastic member 151 and the sleeve member 1521 are both sleeved on the connecting rod. The connecting rod and the collar are both provided with clearance holes that are adapted to the shape of the insert piece 1522, so that the insert piece 1522 can be inserted into the slot 131 of the limiting sleeve 13 through the clearance hole by the sleeve member 1521. The elastic member 151 can be a spring.

[0040] Alternatively, in some embodiments, such as Figure 1 and Figure 2 As shown, the first handle 111 and the connecting rod 112 are detachably connected. In this embodiment, by detachably connecting the first handle 111 and the connecting rod 112, the user can disassemble and assemble the connecting rod 112 and the first handle 111 according to usage needs, so as to replace the connecting rod 112 connected to the first handle 111. For example, a single first handle 111 can be equipped with multiple sets of connecting rods 112, cutter heads 12, and limiting sleeves 13, etc. The included angle between the connecting rod 112 and the cutter head 12 in each set of components is different, and the user can connect the first handle 111 to the corresponding connecting rod 112 according to the usage scenario.

[0041] Specifically, in some embodiments, the first handle 111 and the connecting rod 112 are threaded together, and the outer peripheral wall of the connecting rod 112 is provided with a screwing structure 1121 that protrudes outward relative to the connecting rod 112.

[0042] In this embodiment, the first handle 111 and the connecting rod 112 are connected by threads to facilitate the assembly and disassembly of the first handle 111 and the connecting rod 112. Simultaneously, this embodiment provides an outwardly protruding screwing structure 1121 on the outer peripheral wall of the connecting rod 112. The screwing structure 1121 facilitates the user's grip and allows the first handle 111 and the connecting rod 112 to rotate relative to each other, thereby facilitating the user's assembly and disassembly of the first handle 111 and the connecting rod 112.

[0043] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the screwing structure 1121 has a cross-shaped structure.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A surgical screwdriver, characterized in that, include: A rotating handle assembly includes a first handle and a connecting rod, wherein a first end of the connecting rod is connected to the first handle; The cutting head is connected to the second end of the connecting rod and is used to connect with the nut. A limiting sleeve, a portion of which is sleeved on the outside of the connecting rod and the other portion of which is sleeved on the outside of the cutter head; The connecting rod is used to rotate about the first axis to cooperate with the guidance of the limiting sleeve and drive the cutter head to rotate about the second axis; The first axis extends along the extension direction of the connecting rod, the second axis extends along the extension direction of the cutter head, and the second axis is set at an angle to the first axis.

2. The surgical screwdriver according to claim 1, characterized in that, The cutter head is rotatably connected to the second end of the connecting rod about a third axis, and the third axis is set at an angle to the first axis and the second axis respectively; The limiting sleeve has a first limiting hole and a second limiting hole that are interconnected. The first limiting hole extends along the first axis and the connecting rod passes through the first limiting hole. The second limiting hole extends along the second axis and the cutting head passes through the second limiting hole.

3. The surgical screwdriver according to claim 1, characterized in that, Also includes: The second handle is connected to the limiting sleeve and is perpendicular to the first handle.

4. The surgical screwdriver according to claim 3, characterized in that, The second handle is rotatably connected to the limiting sleeve about the first axis, and a locking mechanism is provided between the second handle and the limiting sleeve; The locking mechanism can switch between a locked state and an unlocked state; when the locking mechanism is in the locked state, the second handle and the limiting sleeve are fixed to each other; when the locking mechanism is in the unlocked state, the second handle can rotate relative to the limiting sleeve.

5. The surgical screwdriver according to claim 4, characterized in that, The locking mechanism includes: An elastic element, the first end of which abuts against the second handle; A connector is movably disposed on the second handle, and the connector abuts against the second end of the elastic member; the outer peripheral wall of the limiting sleeve is provided with a plurality of slots spaced apart along the circumferential direction, and the elastic member is used to drive the connector to be selectively inserted into the slot.

6. The surgical screwdriver according to claim 5, characterized in that, The second handle includes: Grip element; A connector, one end of which is connected to the gripper and the other end of which is rotatably connected to the limiting sleeve; The first end of the elastic element abuts against the end of the gripping element; a portion of the structure of the plug and the elastic element are sleeved on the outside of the connector.

7. The surgical screwdriver according to claim 6, characterized in that, The connector includes: A sleeve is fitted onto the connector, with the first end of the sleeve abutting against the second end of the elastic member; A plug-in piece is provided at the second end of the socket and is used to be inserted into the slot.

8. The surgical screwdriver according to claim 1, characterized in that, The first handle and the connecting rod are detachably connected.

9. The surgical screwdriver according to claim 8, characterized in that, The first handle and the connecting rod are threaded together, and the outer peripheral wall of the connecting rod is provided with a screwing structure that protrudes outward relative to the connecting rod.

10. The surgical screwdriver according to claim 9, characterized in that, The twisting structure has a cross-shaped structure.

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