Medical device with anti-loosening screw

Abstract

The utility model discloses a kind of anti-screw falling medical instruments, including handle and upper sleeve, the lower part of the handle is equipped with bottom bar, and four first sliding grooves are arranged on the vertical axis line of bottom bar about bottom bar with equiangular distribution on the side wall of bottom bar, while the inside of bottom bar is equipped with spring;The utility model is equipped with upper sleeve, lower sleeve and ball, the head of screw needed to use is pushed into lower sleeve when using, the cap along of screw head will extrude ball like outside, ball retraction will extrude corresponding spring piece, when screw head passes, the recess of top is magnetically connected with the bottom of tool bit, subsequently rebounding spring piece pushes ball reset, can clamp and fix the head of screw in the inside of lower sleeve, effectively avoid that screw falls off in the process of using, improve use effect.

Description

Technical Field

[0001] This utility model specifically relates to the technical field of medical devices, and specifically to a medical device for preventing screws from falling out. Background Technology

[0002] Medical devices, also known as medical instruments, refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials, and other similar or related items that are used directly or indirectly on the human body. Medical screwdrivers are a commonly used medical device, mainly used in orthopedic and dental surgeries to help doctors operate and handle surgical instruments and equipment accurately and safely. They are usually made of high-strength stainless steel, which has good durability and corrosion resistance, ensuring that they can be used for a long time during surgery without damage.

[0003] However, currently used medical screwdrivers typically have a simple structure. When in use, they only attract screws by the screw head equipped with a neodymium iron boron magnetic core, lacking additional tightening methods. Therefore, screws are prone to falling off during use, which is a drawback. Utility Model Content

[0004] The purpose of this utility model is to provide a medical device to prevent screws from falling off, in order to solve the problem mentioned in the background art that the currently used medical screwdrivers usually have a simple structure and only attract screws by the blade tip with a neodymium iron boron magnetic core, lacking additional fastening means, so the screws are prone to falling off during use, thus posing a drawback in use.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A medical device for preventing screw dislodgement includes a handle and an upper sleeve. The lower part of the handle is provided with a bottom rod, and four first sliding grooves are provided on the side wall of the bottom rod at equal angles about the vertical axis of the bottom rod. At the same time, a spring is provided inside the bottom rod.

[0007] As a further embodiment of this utility model: the top of the upper sleeve is provided with four second sliding grooves at equal angles about the axis of the upper sleeve, and a lower sleeve is installed at the bottom of the upper sleeve; the interior of the lower sleeve is provided with three mounting grooves at equal angles about the vertical axis of the lower sleeve, and a spring plate is installed inside each mounting groove; a ball is installed at the top of each spring plate, and each ball penetrates the inner wall of the lower sleeve;

[0008] As a further embodiment of this utility model: the lower end of the base rod passes through four second sliding grooves simultaneously, and a cutter head is installed at the bottom of the base rod.

[0009] As a further embodiment of this utility model: the axis of the handle and the axis of the base rod are on the same vertical straight line, and a number of strip-shaped grooves are provided on the outer wall of the handle at equal angles about the vertical axis of the handle.

[0010] As a further embodiment of this utility model, the connection between the base rod and the cutter head is a threaded connection.

[0011] As a further embodiment of this utility model: the bottom rod has a cylindrical slot inside, and the cylindrical slot is connected to four first sliding grooves; the four first sliding grooves cooperate with the cylindrical slot to divide the bottom rod into four semi-circular structures.

[0012] As a further embodiment of this utility model: the connection between the bottom rod and the second sliding groove is a sliding connection, and the axis of the bottom rod and the axis of the upper sleeve are on the same vertical straight line; an internal hexagonal groove is provided in the middle of the inner wall of the upper sleeve.

[0013] As a further embodiment of this utility model: the upper sleeve, the second sliding groove, the lower sleeve, the bottom rod, and the spring form a spring-loaded structure.

[0014] As a further aspect of this utility model, the connection between the upper sleeve and the lower sleeve is a threaded connection.

[0015] As a further embodiment of this utility model: the spring sheet and the ball form a springback structure.

[0016] As a further embodiment of this utility model: the axis of the cutter head and the axis of the base rod are on the same vertical straight line.

[0017] As a further embodiment of this utility model: the cutter head has a hexagonal flange structure in the middle and a neodymium iron boron magnetic core inside.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model is provided with an upper sleeve, a lower sleeve, and a ball bearing. The cutting head is located inside the lower sleeve. When the head of the screw to be used is pushed into the lower sleeve, the cap edge of the screw head will press the ball bearing outward. When the ball bearing retracts, it will press the corresponding spring plate. After the screw head passes through, it is magnetically connected to the bottom of the cutting head through the groove at the top. Then, the spring plate pushes the ball bearing back to its original position, which can clamp and fix the screw head inside the lower sleeve, effectively preventing the screw from falling off during use and improving the performance.

[0020] 2. This utility model is provided with a base rod and a cutter head, and the base rod and the cutter head are connected by a thread, which makes it easy to replace the cutter head with different shapes and patterns according to the needs, thus improving its applicability.

[0021] 3. This utility model adopts a split connection method, which is simple and easy to disassemble and assemble, so as to disinfect and clean all parts, improve the safety of use, and can be reused. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a utility model Figure 1 Another perspective view.

[0024] Figure 3 This is a utility model Figure 2 Another perspective view.

[0025] Figure 4 This is a three-dimensional structural diagram of the blade in this utility model.

[0026] Figure 5 This is a utility model Figure 4 Another perspective view.

[0027] Figure 6 This is a utility model Figure 2 Cross-sectional view along the AA direction.

[0028] Figure 7 This is a three-dimensional structural diagram of the mounting groove in this utility model.

[0029] Figure 8 This utility model Figure 7 Another perspective view.

[0030] Figure 9 This is a plan view of the lower sleeve in this utility model.

[0031] In the diagram: 1-handle, 2-base rod, 3-first slide groove, 4-spring, 5-upper sleeve, 6-second slide groove, 7-lower sleeve, 8-mounting groove, 9-ball bearing, 10-spring plate, 11-cutter head. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-9In this embodiment of the present invention, a medical device for preventing screw loosening includes a handle 1 and an upper sleeve 5. The lower part of the handle 1 is provided with a bottom rod 2, and four first sliding grooves 3 are distributed at equal angles about the vertical axis of the bottom rod 2 on the side wall of the bottom rod 2. At the same time, a spring 4 is provided inside the bottom rod 2. The top of the upper sleeve 5 is provided with four second sliding grooves 6 distributed at equal angles about the axis of the upper sleeve 5, and a lower sleeve 7 is installed at the bottom of the upper sleeve 5. The interior of the lower sleeve 7 is provided with three mounting grooves 8 distributed at equal angles about the vertical axis of the lower sleeve 7, and a spring plate 10 is installed inside each mounting groove 8. A ball bearing 9 is installed at the top of each spring plate 10, and each ball bearing 9 penetrates the inner wall of the lower sleeve 7. The lower end of the bottom rod 2 passes through the four second sliding grooves 6, and a blade 11 is installed at the bottom of the bottom rod 2.

[0034] To be more specific, both the handle 1 and the base rod 2 are made of 316 stainless steel.

[0035] In this embodiment, the axis of the handle 1 and the axis of the base rod 2 are on the same vertical straight line, and a number of strip-shaped grooves are provided on the outer wall of the handle 1 at equal angles to the vertical axis of the handle 1.

[0036] To be more specific, the diameter of handle 1 is larger at the top and smaller at the bottom, which is ergonomic and improves grip comfort, and the grooves on the surface increase friction.

[0037] In this embodiment, the connection between the base rod 2 and the cutter head 11 is a threaded connection.

[0038] More specifically, the threaded connection method makes it easy to replace the cutter head 11 with different sizes and patterns as needed.

[0039] In this embodiment, the bottom rod 2 has a cylindrical slot inside, and the cylindrical slot is connected to four first sliding grooves 3; the four first sliding grooves 3 cooperate with the cylindrical slot to divide the bottom rod 2 into four semi-circular structures.

[0040] To be more specific, the four semi-circular structures pass through the four second sliding grooves 6 respectively.

[0041] In this embodiment, the bottom rod 2 and the second sliding groove 6 are connected by a sliding connection, and the axis of the bottom rod 2 and the axis of the upper sleeve 5 are on the same vertical straight line; the inner wall of the upper sleeve 5 is provided with an internal hexagonal groove in the middle.

[0042] More specifically, the upper sleeve 5 can slide along the second groove 6, and the sliding path remains parallel to the vertical axis of the bottom rod 2.

[0043] In this embodiment, the upper sleeve 5, the second sliding groove 6, the lower sleeve 7, the bottom rod 2, and the spring 4 form a springback structure.

[0044] To be more specific, the upper sleeve 5 will compress the spring 4 in the sliding mode, and the spring 4 will push the upper sleeve 5 to complete the reset.

[0045] In this embodiment, the upper sleeve 5 and the lower sleeve 7 are connected by a threaded connection.

[0046] More specifically, the threaded connection makes it easy to disassemble and assemble the upper sleeve 5 and the lower sleeve 7, and facilitates the cleaning and disinfection of the interior of the lower sleeve 7.

[0047] In this embodiment, the spring sheet 10 and the ball bearing 9 form a spring-loaded structure.

[0048] More specifically, when the ball 9 is squeezed, it compresses the spring plate 10, and the elasticity of the spring plate 10 causes the ball 9 to bounce back and complete the reset.

[0049] In this embodiment, the axis of the cutter head 11 and the axis of the base rod 2 are on the same vertical line.

[0050] To be more specific, when the handle 1 is turned, it works in conjunction with the base rod 2 to drive the cutter head 11 to rotate synchronously on the same axis.

[0051] In this embodiment, the cutter head 11 has a hexagonal flange structure in the middle and a neodymium iron boron magnetic core inside.

[0052] More specifically, when the hexagonal flange structure on the cutter head 11 is connected to the internal hexagonal groove inside the upper sleeve 5, the cutter head 11 can be prevented from rotating, thus preventing the connection between the cutter head 11 and the base rod 2 from becoming loose.

[0053] The working principle of this utility model is as follows: In use, firstly, pull the upper sleeve 5 upward. The upper sleeve 5 moves upward along the first sliding groove 3, while simultaneously driving the lower sleeve 7 to move upward, and at the same time compressing the spring 4. Then, align the head of the screw to be used with the pattern of the cutting head 11 and magnetically connect them. Then, press the screw tightly and release the upper sleeve 5. The spring 4 pushes the upper sleeve 5 and the lower sleeve 7 downward at the same time. When the ball 9 contacts the cap edge of the screw head, the ball 9 retracts inward and compresses the spring plate 10. When the ball 9 passes the cap edge of the screw head, the spring plate 10 pushes the ball 9 to reset, thereby cooperating with the cutting head 11 to clamp the head of the screw. At the same time, the internal hexagonal groove of the upper sleeve 5 and the hexagonal flange on the cutting head 11 are connected to each other.

[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A medical device for preventing screw detachment, characterized in that: Includes a handle (1) and an upper sleeve (5). The lower part of the handle (1) is provided with a bottom rod (2), and four first sliding grooves (3) are provided on the side wall of the bottom rod (2) at equal angles about the vertical axis of the bottom rod (2). At the same time, a spring (4) is provided inside the bottom rod (2). The top of the upper sleeve (5) is provided with four second sliding grooves (6) at equal angles about the axis of the upper sleeve (5), and the bottom of the upper sleeve (5) is provided with a lower sleeve (7); the interior of the lower sleeve (7) is provided with three mounting grooves (8) at equal angles about the vertical axis of the lower sleeve (7), and each mounting groove (8) is provided with a spring plate (10); each spring plate (10) is provided with a ball (9) at the top, and each ball (9) penetrates the inner wall of the lower sleeve (7); The lower end of the bottom rod (2) passes through four second sliding grooves (6) simultaneously, and a cutter head (11) is installed at the bottom of the bottom rod (2).

2. The anti-screw dislodgement medical device according to claim 1, characterized in that: The axis of the handle (1) and the axis of the base rod (2) are on the same vertical line, and the outer wall of the handle (1) is provided with a number of strip grooves at equal angles about the vertical axis of the handle (1).

3. The anti-screw dislodgement medical device according to claim 1, characterized in that: The connection between the base rod (2) and the cutter head (11) is a threaded connection.

4. The anti-screw dislodgement medical device according to claim 1, characterized in that: The bottom rod (2) has a cylindrical slot inside, and the cylindrical slot is connected to four first sliding grooves (3); the four first sliding grooves (3) cooperate with the cylindrical slot to divide the bottom rod (2) into four semi-circular structures.

5. A medical device for preventing screw detachment according to claim 1, characterized in that: The bottom rod (2) and the second sliding groove (6) are connected by a sliding connection, and the axis of the bottom rod (2) and the axis of the upper sleeve (5) are on the same vertical line; the inner wall of the upper sleeve (5) is provided with an internal hexagonal groove in the middle.

6. A medical device for preventing screw detachment according to claim 1, characterized in that: The upper sleeve (5), the second slide groove (6), the lower sleeve (7), the bottom rod (2), and the spring (4) form a springback structure.

7. A medical device for preventing screw detachment according to claim 1, characterized in that: The upper sleeve (5) and the lower sleeve (7) are connected by a threaded connection.

8. A medical device for preventing screw detachment according to claim 1, characterized in that: The spring sheet (10) and the ball (9) form a spring-loaded structure.

9. A medical device for preventing screw detachment according to claim 1, characterized in that: The axis of the cutter head (11) and the axis of the base rod (2) are on the same vertical line.

10. A medical device for preventing screw detachment according to claim 1, characterized in that: The cutter head (11) has a hexagonal flange structure in the middle and a neodymium iron boron magnetic core inside.

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