Telescopic drill bit

Abstract

The utility model provides a telescopic drill bit which comprises a telescopic drill bit assembly, the telescopic drill bit assembly comprises an outer cutter handle, a telescopic adjusting mechanism, a first sealing buckle, a second sealing buckle, a power connecting block, an outer cutter cavity rod, a soft drill and an inner cutter cavity rod, the first sealing buckle is clamped in the outer knife handle; the second sealing buckle is clamped in the outer knife handle, and the power connecting block is movably connected with the second sealing buckle; a flushing channel is formed in the outer wall of the power connecting block; the telescopic adjusting mechanism is operated to drive the outer cutter cavity rod to move and hide the soft drill, so that the soft drill can smoothly enter an expected position, the telescopic adjusting mechanism drives the outer cutter cavity rod to move reversely again, the soft drill stretches out for punching, the soft drill is prevented from being hooked by free soft tissue, and the service life of the soft drill is prolonged. The clinical application is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedics, in particular to a telescopic drill bit. Background Art

[0002] Arthroscopic surgery is a minimally invasive surgical technique that uses an arthroscope (a long, thin, tube-shaped instrument with a lens and light) to view the inside of a joint.

[0003] In orthopedic surgery, developing a procedure may involve using the latest technology or tools to improve surgical outcomes, reduce complications, or increase surgical precision.

[0004] During arthroscopic or open surgery, it is necessary to drill holes or mark locations in the narrow joint cavity. Due to the small space of the joint cavity and the complex anatomical structure of the joint tissue, the drill bit sometimes cannot smoothly enter the intended position. At the same time, there are some free soft tissues in the joint cavity. When the drill tip enters the intended working position, it is easy to be hooked by the free soft tissue, which is not conducive to clinical application. Therefore, a telescopic drill bit is proposed. Utility Model Content

[0005] The technical solution of an embodiment of the utility model is achieved as follows: a telescopic drill bit, comprising a telescopic drill bit assembly, the telescopic drill bit assembly comprising an outer tool handle, a telescopic adjustment mechanism, a first sealing buckle, a second sealing buckle, a power connecting block, an outer tool cavity rod, a soft drill and an inner tool cavity rod, wherein the telescopic adjustment mechanism is arranged in the outer tool handle, and the first sealing buckle is clamped in the outer tool handle; the second sealing buckle is clamped in the outer tool handle, and the power connecting block is movably connected to the second sealing buckle; a flushing channel is provided on the outer wall of the power connecting block, the inner tool cavity rod passes through the power connecting block and is connected to the interior of the flushing channel, and the inner tool cavity rod and the power connecting block are fixedly connected; the outer tool cavity rod is arranged on the telescopic adjustment mechanism, and one end of the outer tool cavity rod passes through the outer tool handle; the inner tool cavity rod passes through the outer tool cavity rod, and the soft drill is arranged at one end of the inner tool cavity rod.

[0006] In some embodiments, the telescopic adjustment mechanism includes a button, a cam block, a cam platform, a spring baffle, a spring member and an annular baffle, wherein the outer wall of the outer knife handle is provided with a movable through hole, and the outer wall of the button is fitted with the inner wall of the movable through hole; the button cooperates with the first sealing buckle rolling groove, and the outer wall of the button is respectively provided with a first movable groove and a second movable groove; the first movable groove and the second movable groove are connected, and the outer knife cavity rod passes through the first movable groove and the second movable groove; the outer knife cavity rod passes through the cam platform, and the outer knife cavity rod is fixedly connected to the cam platform, and the cam block is in contact with the cam platform; the spring baffle is arranged on the outer wall of the cam platform, and the spring baffle is fixedly connected to the cam platform, and the outer wall of the spring baffle is fitted with the inner wall of the outer knife handle; the annular baffle is arranged on the inner wall of the outer knife handle, and the inner knife cavity rod passes through the annular baffle; one end of the spring member is arranged on the outer wall of the spring baffle, and the other end of the spring member is arranged on the outer wall of the annular baffle.

[0007] In some embodiments, an arc-shaped groove is formed on a side of the first sealing buckle close to the cam block, and an inner wall of the arc-shaped groove fits with an outer wall of the cam block.

[0008] In some embodiments, the outer wall of the outer knife handle is evenly provided with a first card groove, and the outer wall of the second sealing buckle is evenly provided with a first card tooth, and the first card tooth is in contact with the first card groove.

[0009] In some embodiments, an annular limit block is provided on the outer wall of the power connector, and the annular limit block is fixedly connected to the power connector. The inner wall of the second sealing buckle is evenly provided with limit protrusions, and the second sealing buckle is fixedly connected to the limit protrusions, and the annular limit block is fitted with several of the limit protrusions.

[0010] In some embodiments, the outer wall of the outer knife handle is evenly provided with a second card groove, the outer wall of the first sealing buckle is evenly provided with a second card tooth, and the second card tooth is in contact with the second card groove.

[0011] In some embodiments, the head end of the outer knife cavity rod is made of soft material.

[0012] In some embodiments, a gap is provided at the head end of the soft drill.

[0013] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0014] The utility model is used for hiding the soft drill by operating the telescopic adjustment mechanism to drive the outer knife cavity rod to move, so that the soft drill can be smoothly put into the expected position, so that the telescopic adjustment mechanism can drive the outer knife cavity rod to move in the opposite direction again, so that the soft drill can be extended to punch a hole, and the soft drill can be prevented from being hooked by free soft tissue, which is beneficial to clinical application.

[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a side structural diagram of the utility model;

[0019] Figure 3 For this utility model Figure 2 AA side cross-sectional structure diagram;

[0020] Figure 4 For this utility model Figure 3 A magnified structural diagram of area B;

[0021] Figure 5 For this utility model Figure 3 The enlarged structure diagram of the C region;

[0022] Figure 6 For this utility model Figure 3 A magnified structural diagram of the D region;

[0023] Figure 7 For this utility model Figure 3 A magnified structural diagram of the E region;

[0024] Figure 8 This is a front structural diagram of the present utility model;

[0025] Figure 9 For this utility model Figure 8 FF side cross-sectional structure diagram;

[0026] Figure 10This is a structural diagram of the connection between the cam block and the cam platform of the utility model;

[0027] Figure 11 This is a structural diagram of the outer knife cavity rod and soft drill in use state of the utility model.

[0028] Figure numerals: 1. telescopic drill bit assembly; 2. flushing channel; 3. first clamping groove; 4. first clamping tooth; 5. second clamping groove; 6. second clamping tooth; 7. movable through hole; 8. first movable groove; 9. second movable groove; 10. outer tool handle; 11. telescopic adjustment mechanism; 12. first sealing buckle; 13. second sealing buckle; 14. power connecting block; 15. outer tool cavity rod; 16. soft drill; 17. inner tool cavity rod; 20. arc groove; 21. limiting protrusion; 22. annular limiting block; 110. button; 111. cam block; 112. cam platform; 113. spring baffle; 114. spring member; 115. annular baffle. DETAILED DESCRIPTION

[0029] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0030] It should be noted that the terms "first," "second," "symmetrical," "array," etc. are used only to distinguish descriptions from positional descriptions and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of the number of features.

[0031] In this utility model, unless otherwise specified or limited, terms such as "installation," "connection," and "fixation" should be understood in a broad sense; for example, they may refer to fixed connection, detachable connection, or integral molding; they may refer to mechanical connection, direct connection, welding, or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in this utility model based on the specification and drawings in combination with specific circumstances.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-11As shown, the embodiment of the present invention provides a telescopic drill bit, including a telescopic drill bit assembly 1, the telescopic drill bit assembly 1 includes an outer tool handle 10, a telescopic adjustment mechanism 11, a first sealing buckle 12, a second sealing buckle 13, a power connection block 14, an outer tool cavity rod 15, a soft drill 16 and an inner tool cavity rod 17, wherein the telescopic adjustment mechanism 11 is arranged in the outer tool handle 10, and the first sealing buckle 12 is clamped in the outer tool handle 10, and the second sealing buckle 13 is clamped in the outer tool handle 10, and The power connecting block 14 is movably connected to the second sealing buckle 13, and a flushing channel 2 is opened on the outer wall of the power connecting block 14. The inner knife cavity rod 17 passes through the power connecting block 14 and is connected to the interior of the flushing channel 2. The inner knife cavity rod 17 and the power connecting block 14 are fixedly connected. The outer knife cavity rod 15 is arranged on the telescopic adjustment mechanism 11, and one end of the outer knife cavity rod 15 passes through the outer knife handle 10. The inner knife cavity rod 17 passes through the outer knife cavity rod 15, and the soft drill 16 is arranged at one end of the inner knife cavity rod 17.

[0034] In the present embodiment, specifically, the telescopic adjustment mechanism 11 includes a button 110, a cam block 111, a cam platform 112, a spring baffle 113, a spring member 114 and an annular baffle 115, wherein the outer wall of the outer knife handle 10 is provided with a movable through hole 7, and the outer wall of the button 110 is fitted with the inner wall of the movable through hole 7, the button 110 is matched with the first sealing buckle 12 rolling groove, and the outer wall of the button 110 is respectively provided with a first movable groove 8 and a second movable groove 9, the first movable groove 8 and the second movable groove 9 are connected, and the outer knife cavity rod 15 passes through the first movable groove 8 and the second movable groove 9, the outer knife cavity rod 15 passes through the cam platform 112, and the outer knife cavity rod 15 is fixedly connected to the cam platform 112, the cam block 111 is in contact with the cam platform 112, the spring baffle 113 is arranged on the outer wall of the cam platform 112, and the spring baffle 113 It is fixedly connected to the cam platform 112, and the outer wall of the spring baffle 113 is attached to the inner wall of the outer tool handle 10. The annular baffle 115 is arranged on the inner wall of the outer tool handle 10, and the inner tool cavity rod 17 passes through the annular baffle 115. One end of the spring member 114 is arranged on the outer wall of the spring baffle 113, and the other end of the spring member 114 is arranged on the outer wall of the annular baffle 115. The button 110 is set above to drive the cam block 111 to rotate in the arc groove 20 on the first sealing buckle 12, so that the protrusion of the cam block 111 is separated from the protrusion of the cam platform 112. The elastic potential energy of the spring member 114 drives the spring baffle 113 to move, and the spring baffle 113 drives the cam platform 112 to move. The cam platform 112 drives the outer tool cavity rod 15 to move, so that the outer tool cavity rod 15 wraps the soft drill 16 and the inner tool cavity rod 17.

[0035] In this embodiment, specifically, an arcuate groove 20 is provided on the side of the first sealing buckle 12 close to the cam block 111, and the inner wall of the arcuate groove 20 is in contact with the outer wall of the cam block 111. The arcuate groove 20 is provided to assist the cam block 111 in rotating while limiting the position of the cam block 111.

[0036] In this embodiment, specifically, the outer wall of the outer tool handle 10 is evenly provided with a first card groove 3, and the outer wall of the second sealing buckle 13 is evenly provided with a first card tooth 4, and the first card tooth 4 is in contact with the first card groove 3. The above arrangement of the first card tooth 4 and the first card groove 3 are used in conjunction to movably fix the second sealing buckle 13 on the outer tool handle 10.

[0037] In this embodiment, specifically, the outer wall of the power connecting block 14 is provided with an annular limit block 22, the annular limit block 22 is fixedly connected to the power connecting block 14, the inner wall of the second sealing buckle 13 is evenly provided with limiting protrusions 21, the second sealing buckle 13 and the limiting protrusion 21 are fixedly connected, and the annular limit block 22 is fitted with several limiting protrusions 21. By setting the annular limit block 22 and the several limiting protrusions 21 in combination, the position of the power connecting block 14 can be limited while assisting the power connecting block 14 to rotate.

[0038] In this embodiment, specifically, the outer wall of the outer handle 10 is evenly provided with a second card groove 5, and the outer wall of the first sealing buckle 12 is evenly provided with a second card tooth 6, and the second card tooth 6 is in contact with the second card groove 5. The second card tooth 6 is used in conjunction with the second card groove 5 to movably fix the first sealing buckle 12 on the outer handle 10.

[0039] In this embodiment, specifically, the head end of the outer knife cavity rod 15 is made of soft material (not shown in the figure). By setting the head end of the outer knife cavity rod 15 to be made of soft material, it is convenient to adjust the head end characteristics of the outer knife cavity rod 15. The head end characteristics of the outer knife cavity rod 15 include left bend, right bend, upward bend and downward bend. The head bend angle of the head end of the outer knife cavity rod 15 can be designed to be 0°-90°.

[0040] In this embodiment, specifically, a gap (not shown in the figure) is provided at the head end of the soft drill 16 , and the gap provided in the soft drill 16 is used to facilitate the discharge of the joint cavity and tissue debris.

[0041] When the present invention is in operation: the relevant personnel connects the power connecting block 14 to the equipment (not shown in the figure), and when it is necessary to extend the outer knife cavity rod 15 and the soft drill 16 into the expected working position, the relevant personnel pushes the button 110 to rotate backward, and the button 110 drives the cam block 111 to rotate in the arc groove 20 on the first sealing buckle 12, so that the raised portion of the cam block 111 is separated from the raised portion of the cam platform 112, and the elastic potential energy of the spring member 114 drives the spring baffle 113 to move, and the spring baffle 113 drives the cam platform 112 to move, and the cam platform 112 drives the outer knife cavity rod 15 to move, so that the outer knife cavity rod 15 wraps the soft drill 16 and the inner knife cavity rod 17, so that the outer knife cavity rod 15 and the soft drill 16 are extended into the expected working position, preventing the soft drill 16 from being hooked by free soft tissue.

[0042] When the soft drill 16 needs to rotate, the relevant personnel pushes the button 110 forward and rotates it. The button 110 drives the cam block 111 to rotate in the arc groove 20 on the first sealing buckle 12, so that the raised part of the cam block 111 contacts the raised part of the cam platform 112, so that the cam block 111 squeezes the cam platform 112 to move, and the cam platform 112 drives the outer knife cavity rod 15 to move and limit, so that the outer knife cavity rod 15 moves on the soft drill 16, so that the soft drill 16 is exposed to the outside, and the access equipment drives the power connection block 14 to rotate, and the power connection block 14 drives the soft drill 16 to rotate through the inner knife cavity rod 17, so that the soft drill 16 performs drilling work.

[0043] When it is necessary to flush the joint cavity and tissue debris during the punching process, the relevant personnel first connect the external negative pressure equipment (not shown in the figure) to the flushing channel 2. The negative pressure generated in the flushing channel 2 is used to suction and flush the joint cavity and tissue debris through the inner knife cavity rod 17 and the soft drill 16. The soft drill 16 is provided with a gap to facilitate the discharge of the joint cavity and tissue debris.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A telescopic drill bit, comprising a telescopic drill bit assembly (1), characterized in that: The telescopic drill bit assembly (1) comprises an outer tool handle (10), a telescopic adjustment mechanism (11), a first sealing buckle (12), a second sealing buckle (13), a power connection block (14), an outer tool cavity rod (15), a soft drill (16) and an inner tool cavity rod (17), wherein: The telescopic adjustment mechanism (11) is arranged in the outer knife handle (10), and the first sealing buckle (12) is clamped in the outer knife handle (10); The second sealing buckle (13) is clamped in the outer knife handle (10), and the power connecting block (14) is movably connected to the second sealing buckle (13); The outer wall of the power connecting block (14) is provided with a flushing channel (2), the inner knife cavity rod (17) passes through the power connecting block (14) and is communicated with the interior of the flushing channel (2), and the inner knife cavity rod (17) and the power connecting block (14) are fixedly connected; The outer knife cavity rod (15) is arranged on the telescopic adjustment mechanism (11), and one end of the outer knife cavity rod (15) passes through the outer knife handle (10); The inner knife cavity rod (17) passes through the outer knife cavity rod (15), and the soft drill (16) is arranged at one end of the inner knife cavity rod (17).

2. The telescopic drill bit according to claim 1, characterized in that: The telescopic adjustment mechanism (11) comprises a button (110), a cam block (111), a cam platform (112), a spring baffle (113), a spring member (114) and an annular baffle (115), wherein: The outer wall of the outer knife handle (10) is provided with a movable through hole (7), and the outer wall of the button (110) is attached to the inner wall of the movable through hole (7); The button (110) is matched with the first sealing buckle (12) in a rolling groove, and the outer wall of the button (110) is respectively provided with a first movable groove (8) and a second movable groove (9); The first movable groove (8) and the second movable groove (9) are connected, and the outer knife cavity rod (15) passes through the first movable groove (8) and the second movable groove (9); The outer knife cavity rod (15) passes through the cam platform (112), and the outer knife cavity rod (15) is fixedly connected to the cam platform (112), and the cam block (111) is in contact with the cam platform (112); The spring baffle (113) is arranged on the outer wall of the cam platform (112), and the spring baffle (113) is fixedly connected to the cam platform (112), and the outer wall of the spring baffle (113) is in contact with the inner wall of the outer shank (10); The annular baffle (115) is arranged on the inner wall of the outer knife handle (10), and the inner knife cavity rod (17) passes through the annular baffle (115); One end of the spring member (114) is arranged on the outer wall of the spring baffle (113), and the other end of the spring member (114) is arranged on the outer wall of the annular baffle (115).

3. The telescopic drill bit according to claim 2, characterized in that: An arcuate groove (20) is provided on one side of the first sealing buckle (12) close to the cam block (111), and the inner wall of the arcuate groove (20) is in contact with the outer wall of the cam block (111).

4. The telescopic drill bit according to claim 1, characterized in that: The outer wall of the outer knife handle (10) is evenly provided with first clamping grooves (3), and the outer wall of the second sealing buckle (13) is evenly provided with first clamping teeth (4), and the first clamping teeth (4) are in contact with the first clamping grooves (3).

5. The telescopic drill bit according to claim 1, characterized in that: The outer wall of the power connecting block (14) is provided with an annular limiting block (22), and the annular limiting block (22) is fixedly connected to the power connecting block (14). The inner wall of the second sealing buckle (13) is evenly provided with limiting protrusions (21), and the second sealing buckle (13) is fixedly connected to the limiting protrusions (21). The annular limiting block (22) is in contact with a plurality of the limiting protrusions (21).

6. The telescopic drill bit according to claim 1, characterized in that: The outer wall of the outer knife handle (10) is evenly provided with second clamping grooves (5), and the outer wall of the first sealing buckle (12) is evenly provided with second clamping teeth (6), and the second clamping teeth (6) and the second clamping grooves (5) are in contact with each other.

7. The telescopic drill bit according to claim 1, characterized in that: The head end of the outer knife cavity rod (15) is made of soft material.

8. The telescopic drill bit according to claim 1, characterized in that: A gap is provided at the head end of the soft drill (16).

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