Medical grinding tool bit and medical grinding tool

Abstract

The utility model discloses a medical grinding tool bit and a medical grinding cutter, and relates to the technical field of medical instruments, and the medical grinding tool bit comprises a cutter bar part, a first end and a second end, the rotating part is provided with a center part and an expansion part, the center part is connected with the second end of the cutter bar part, and the expansion part extends from the center part to the first end of the cutter bar part around the peripheral wall of the cutter bar part and tends to be far away from the peripheral wall in the radial direction; and the blade part is arranged at the end part, facing the first end of the cutter bar part, of the expansion part. According to the technical scheme, the medical grinding tool bit meets the use requirement for grinding soft tissue.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of medical grinding cutter head and medical grinding cutter. BACKGROUND

[0002] Medical grinding cutter is a kind of widely used surgical instrument, and the tissue is ground by the high-speed rotation of cutter head.

[0003] The cutter head of the medical grinding cutter generally used in market is designed as ellipsoid, and the grinding cutter head is mainly used to support vertical or lateral grinding action in operation, and is generally used to grind hard bone tissue.

[0004] However, when grinding soft tissue, the ellipsoid grinding cutter head is pushed or side-pushed, and the soft tissue is deformed or moved, so that grinding operation is difficult to realize, and use requirement cannot be met. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of medical grinding cutter head and medical grinding cutter, to provide a kind of medical grinding cutter head satisfying the use requirement of grinding soft tissue.

[0006] To achieve the above-mentioned purpose, the medical grinding cutter head provided by the utility model comprises:

[0007] The cutter bar portion has opposite first and second ends.

[0008] The rotation portion has a central portion and an expansion portion, the central portion is connected to the second end of the cutter bar portion, the expansion portion extends from the central portion to the first end of the cutter bar portion around the outer peripheral wall of the cutter bar portion, and shows a trend of radially away from the outer peripheral wall; and

[0009] The cutting edge portion is provided at the end of the expansion portion towards the first end of the cutter bar portion.

[0010] In an embodiment, the rotation portion is coaxially arranged with the cutter bar portion.

[0011] In an embodiment, the rotation portion is in the shape of a circular arc, and the convex surface of the circular arc faces away from the second end; or the rotation portion is in the shape of a hollow hemisphere.

[0012] In an embodiment, the outer surface of the rotation portion away from the cutter bar portion is a smooth curved surface.

[0013] In an embodiment, the end of the expansion portion towards the first end is provided with a chamfer structure to form the cutting edge portion.

[0014] The chamfer structure is arranged on one side of the expansion part facing the blade rod part, or the chamfer structure is arranged on one side of the expansion part away from the blade rod part.

[0015] In an embodiment, the blade rod part comprises a first section and a second section connected to each other, the diameter of the first section is smaller than the diameter of the second section, the first end of the first section away from the second section is the first end, and the second end of the second section away from the first section is the second end.

[0016] The utility model discloses still propose a kind of medical grinding tool, including:

[0017] The medical grinding tool described above;

[0018] Outer cutter tube assembly;And

[0019] Inner cutter rod assembly, rotatably and being arranged in outer cutter tube assembly, one end of the inner cutter rod assembly is connected with the first end of the blade rod part, and the other end of the inner cutter rod assembly is connected with the driving mechanism.

[0020] In an embodiment, the medical grinding tool further comprises a support sleeve, which is arranged in the outer cutter tube assembly and surrounds the outside of the blade rod part.

[0021] In an embodiment, the inner cutter rod assembly is provided with a flexible section, the outer cutter tube assembly is provided with a curved section, and the flexible section is correspondingly arranged in the curved section.

[0022] In an embodiment, the medical grinding tool further comprises:

[0023] Handle body, the outer cutter tube assembly is fixed to the handle body;And

[0024] Rotating shaft assembly, which is rotatably arranged in the handle body and drivingly connected with the inner cutter rod assembly, and the inner cutter rod assembly is connected with the driving mechanism through the rotating shaft assembly.

[0025] The medical grinding tool in the technical scheme of the utility model comprises a blade rod part, a rotary part and a blade edge part, the blade rod part drives the rotary part to rotate, so that the blade edge part on the expansion part rotates to realize the grinding function. The center part of the rotary part is connected with the second end of the blade rod part, the expansion part of the rotary part extends towards the first end of the blade rod part, so that the rotary part extends towards the back of the medical grinding tool, and the blade edge part faces the back. In use, the user can hook the soft tissue by lifting the medical grinding tool, so that the soft tissue is not easy to deform and move, and the grinding treatment is facilitated, thereby meeting the use requirement of grinding soft tissue, ensuring the accuracy of grinding position, and improving the operation efficiency and safety. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creative labor.

[0027] Figure 1 A sectional view of one embodiment of the medical grinding tool bit provided by the present application;

[0028] Figure 2 A sectional view of one embodiment of the medical grinding tool bit provided by the present application;

[0029] Figure 3 A sectional view of one embodiment of the medical grinding tool provided by the present application;

[0030] Figure 4 A sectional view of part of the structure of one embodiment of the medical grinding tool provided by the present application;

[0031] Figure 5 A sectional view of another embodiment of the medical grinding tool bit provided by the present application;

[0032] Figure 6 A sectional view of still another embodiment of the medical grinding tool bit provided by the present application.

[0033] Explanation of the reference signs:

[0034] 100, medical grinding tool bit; 110, tool shank part; 111, first section; 112, second section; 120, rotary part; 1201, smooth curved surface; 121, center part; 122, expansion part; 130, cutting edge part;

[0035] 200, outer tool tube assembly; 210, curved section;

[0036] 300, inner tool shank assembly; 310, flexible section;

[0037] 400, support sleeve;

[0038] 500, handle body;

[0039] 600, rotating shaft assembly.

[0040] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present utility model.

[0042] It should be noted that if the embodiments of the present utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0043] In the present utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; "connection" can be mechanical connection, or electrical connection, can be direct connection, or indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. Unless otherwise explicitly limited, the above terms in the present utility model can be understood in the specific meaning according to the specific circumstances by those skilled in the art.

[0044] In addition, if the embodiments of the present utility model involve "first", "second" and the like, the "first", "second" and the like are only for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present utility model.

[0045] The present utility model provides a medical grinding tool bit.

[0046] Please refer to Figures 1 to 2 , Figure 1 The present utility model provides a medical grinding tool bit one embodiment of sectional view, Figure 2 The present utility model provides a medical grinding tool bit one embodiment of structural schematic view.

[0047] In an embodiment of the utility model, the medical grinding tool bit 100 comprises:

[0048] The tool bar part 110 has opposite first and second ends.

[0049] The rotary part 120 has a central part 121 and an expansion part 122, the central part 121 is connected with the second end of the tool bar part 110, the expansion part 122 extends from the central part 121 to the first end direction of the tool bar part 110 around the outer peripheral wall of the tool bar part 110 and presents the trend of radially away from the outer peripheral wall.

[0050] The cutting edge part 130 is arranged at the end of the expansion part 122 towards the first end of the tool bar part 110.

[0051] The medical grinding tool bit 100 in the technical scheme of the utility model comprises the tool bar part 110, the rotary part 120 and the cutting edge part 130, the tool bar part 110 rotates and drives the rotary part 120 to rotate, so that the cutting edge part 130 on the expansion part 122 rotates, and the grinding function is realized.The central part 121 of the rotary part 120 is connected with the second end of the tool bar part 110, the expansion part 122 of the rotary part 120 extends towards the first end of the tool bar part 110, so that the rotary part 120 extends towards the back of the medical grinding tool bit 100, the cutting edge part 130 faces the back, and in use, the user can make the medical grinding tool bit 100 hook the soft tissue through the lifting action, so that the soft tissue is not easy to deform and move, the grinding treatment is facilitated, thereby meeting the use requirement of grinding the soft tissue, ensuring the accuracy of the grinding position, and improving the operation efficiency and safety.

[0052] The distance between the expansion part 122 and the outer peripheral wall of the tool bar part 110 presents the increasing trend, so that the cutting edge part 130 has a certain interval from the outer peripheral wall of the tool bar part 110, and the cutting edge part 130 is prevented from being too close to the outer peripheral wall of the tool bar part 110 and causing the failure to hook the soft tissue.

[0053] The rotary part 120 can be hollow hemispherical as shown in the figure, bowl-shaped as shown in the figure, hollow conical as shown in the figure, hollow circular table-shaped, etc. Figure 1 Figure 5 Figure 6

[0054] In an embodiment, the rotary part 120 is coaxially arranged with the tool bar part 110.

[0055] In the embodiment of the utility model, the rotary part 120 is coaxially arranged with the tool bar part 110, so that the rotation tracks of each point on the cutting edge part 130 are same, the uniformity and balance of the rotary part 120 when rotating are improved, thereby improving the stability of the grinding force of the cutting edge part 130 applied to the soft tissue, and improving the precision and safety of the operation.

[0056] ​​​In an embodiment, the rotary part 120 is in the shape of a circular arc, and the convex surface of the circular arc faces away from the second end; or the rotary part 120 is in the shape of a hollow hemisphere.

[0057] With reference to Figure 1 and Figure 2 In the embodiment of the utility model, the rotary part 120 is in the shape of a circular arc, for example, a hemisphere, a bowl and the like, so that the rotary part 120 has a smooth arc-shaped outer surface, which on the one hand reduces the sharp parts on the medical grinding tool bit 100, reduces the possibility of injuring other tissues of the patient, and improves the safety of the operation; on the other hand, the circular arc-shaped shape is relatively smooth, and when the cutting edge part 130 grinds the bone tissue, the peripheral wall of the rotary part 120 can contact other tissues, and the smooth shape makes the rotary part 120 receive smaller resistance, thereby improving the working efficiency of the medical grinding tool bit 100.

[0058] With reference to Figure 1 and Figure 2 In the embodiment of the utility model, the rotary part 120 is in the shape of a hollow hemisphere, and the shape is more smooth, which further reduces the possibility of injuring other tissues, in addition, the regular shape is beneficial to reduce the processing difficulty and ensure the processing precision.

[0059] In an embodiment, the outer surface of the rotary part 120 away from the tool shank part 110 is a smooth curved surface 1201.

[0060] With reference to Figure 1 and Figure 2 In the embodiment of the utility model, the outer surface of the rotary part 120 away from the tool shank part 110 is a smooth curved surface 1201, which further reduces the possibility of scratching other tissues of the patient and improves the safety of the operation.

[0061] In an embodiment, the end of the rotary part 120 toward the first end is provided with a chamfer structure to form the cutting edge part 130.

[0062] The chamfer structure is arranged on the side of the expansion part 122 toward the tool shank part 110, or the chamfer structure is arranged on the side of the expansion part 122 away from the tool shank part 110.

[0063] With reference to Figure 1 In the embodiment of the utility model, the end of the rotary part 120 is provided with a chamfer structure to form the cutting edge part 130, which is simple in structure and easy to process, and the chamfer structure can be arranged on the side of the expansion part 122 toward the tool shank part 110 or on the side of the expansion part 122 away from the tool shank part 110. In the embodiment, the chamfer structure is arranged on the side of the expansion part 122 toward the tool shank part 110, so that the ground tissue is more easily entered into the groove surrounded by the rotary part 120, and the ground tissue at the operation site is conveniently cleaned.

[0064] In an embodiment, the tool bar portion 110 includes a first section 111 and a second section 112 connected together, the first section 111 has a smaller diameter than the second section 112, the first section 111 has a first end away from the second section 112, and the second section 112 has a second end away from the first section 111.

[0065] With reference to Figure 2 In the embodiment of the utility model, the tool bar portion 110 includes a first section 111 and a second section 112 connected together, the rotary portion 120 is arranged at the second end of the second section 112 away from the first section 111, the first section 111 has a smaller diameter than the second section 112, and the smaller diameter makes the first section 111 convenient to connect with the inner tool bar assembly 300, and in the embodiment, after the first section 111 is aligned and abuts against the inner tool bar assembly 300, the sleeve is sleeved outside the first section 111 and the inner tool bar assembly 300 and is welded with the first section 111 and the inner tool bar assembly 300 respectively, so that the connection of the first section 111 and the inner tool bar assembly 300 is realized.

[0066] With reference to Figure 1 The utility model also proposes a medical grinding tool, including:

[0067] The medical grinding tool 100 described above;

[0068] The outer tool tube assembly 200; and

[0069] The inner tool bar assembly 300 is rotatably arranged in the outer tool tube assembly 200, one end of the inner tool bar assembly 300 is connected to the first end of the tool bar portion 110, and the other end of the inner tool bar assembly 300 is connected to the driving mechanism.

[0070] The specific structure of the medical grinding tool 100 is referred to the above-mentioned embodiments, since the medical grinding tool adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The inner tool bar assembly 300 is rotatably arranged in the outer tool tube assembly 200, the inner tool bar assembly 300 is connected to the power handle and the medical grinding tool 100, the inner tool bar assembly 300 rotates with the power handle and drives the medical grinding tool 100 to rotate, so that the medical grinding tool 100 grinds the bone tissue. The inner tool bar assembly 300 rotates in the outer tool tube assembly 200, the outer tool tube assembly 200 supports and protects the inner tool bar assembly 300, and improves the stability and safety in the grinding process.

[0071] In an embodiment, the medical grinding tool further includes a support sleeve 400, which is arranged in the outer tool tube assembly 200 and sleeved outside the tool bar portion 110.

[0072] With reference to Figure 2In the embodiment of the utility model, the medical grinding tool further comprises a supporting sleeve 400, which is arranged between the tool bar part 110 and the outer tool tube assembly 200, and specifically, the supporting sleeve 400 is sleeved outside the second section 112. On the one hand, the supporting sleeve 400 plays a supporting role for the tool bar part 110, reduces the runout of the medical grinding tool head 100, and improves the grinding precision; on the other hand, the supporting sleeve 400 is generally made of wear-resistant materials, such as copper, copper alloy, etc., so that the supporting sleeve 400 has good wear resistance, avoids direct friction between the medical grinding tool head 100 and the outer tool tube assembly 200, and prolongs the service life of the medical grinding tool head 100.

[0073] In an embodiment, the inner tool bar assembly 300 is provided with a flexible section 310, and the outer tool tube assembly 200 is provided with a curved section 210, and the flexible section 310 is correspondingly arranged in the curved section 210.

[0074] In the embodiment of the utility model, the outer tool tube assembly 200 is provided with a curved section 210, which on the one hand provides more operation angles, so that the medical grinding tool can be applied to surgical sites with complex angles, and on the other hand provides a more convenient surgical field for the user, thereby improving the precision and safety of the operation. The inner tool bar assembly 300 is provided with a flexible section 310, so that the inner tool bar assembly 300 can be bent at any angle, and when the inner tool bar assembly 300 is arranged in the outer tool tube assembly 200, the flexible section 310 is arranged in the curved section 210, so that the inner tool bar assembly 300 can rotate in the outer tool tube assembly 200.

[0075] Specifically in the embodiment, the inner tool bar assembly 300 is designed to be flexible as a whole, so that the same inner tool bar assembly 300 can be applied to outer tool tube assemblies 200 with different curved positions and different curved angles, thereby widening the adaptation range of the inner tool bar assembly 300 and improving the interchangeability of the medical grinding tool. The inner tool bar assembly 300 comprises a flexible member and a protective sleeve, and the flexible member can be made of metal wires, such as steel wires or copper wires, etc., which not only ensures the flexibility of the inner tool bar assembly 300, but also makes the inner tool bar assembly 300 have a certain strength, thereby reducing the possibility of breakage of the inner tool bar assembly 300 during rotation. The protective sleeve is sleeved outside the flexible member and plays a protective role for the flexible member. On the one hand, the protective sleeve avoids direct friction between the flexible member and the inner wall of the outer tool tube assembly 200, reduces the possibility of breakage of the flexible member, and prolongs the service life of the flexible member; on the other hand, even if the flexible member breaks, the broken flexible member is also wrapped inside the protective sleeve, which avoids the medical grinding tool head 100 from falling into the surgical site due to breakage of the inner tool bar assembly 300, thereby improving the safety of the operation; on the other hand, the protective sleeve is made of wear-resistant and self-lubricating materials, such as polyvinyl fluoride, polyvinylidene fluoride, etc., which reduces the friction between the inner wall of the outer tool tube assembly 200 and the inner tool bar assembly 300 during rotation, thereby reducing the heat generated during grinding.

[0076] In an embodiment, the medical grinding tool further comprises:

[0077] a handle body 500, the outer cutter tube assembly 200 is fixed to the handle body 500; and

[0078] a rotating shaft assembly 600, which is rotatably arranged in the handle body 500 and drivingly connected to the inner cutter rod assembly 300, and the inner cutter rod assembly 300 is connected to the driving mechanism through the rotating shaft assembly 600.

[0079] With reference to Figure 1 Figure 2 Figure 1 Figures 2 to 4 Figures 3 to 4 Figure 4 Figure 3 In the embodiment of the present application, the medical grinding tool further comprises a handle body 500 and a rotating shaft assembly 600, the outer cutter tube assembly 200 is fixed to the handle body 500, the rotating shaft assembly 600 is rotatably arranged in the handle body 500, the handle body 500 supports and protects the rotating shaft assembly 600, the rotating shaft assembly 600 drivingly connects the power handle and the inner cutter rod assembly 300, and in the embodiment, the rotating shaft assembly 600 comprises a connecting shaft and a bearing, the bearing is sleeved on the outer part of the connecting shaft and arranged in the handle body 500, one end of the connecting shaft is provided with a connector for connecting the power handle, the other end of the rotating shaft assembly 600 is provided with a slot, the flexible part of the inner cutter rod assembly 300 is inserted into the slot and welded and fixed, the connecting shaft facilitates the connection of the medical grinding tool and the power handle, and reduces the disassembly and assembly difficulty of the medical grinding tool.

[0080] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application and the content of the present application are included in the patent protection scope of the present application.

Claims

1. A medical burr head, characterized by The utility model relates to a medical grinding tool, comprising: a blade rod part having opposite first and second ends; a swivel part having a central part connected to the second end of the blade rod part and an expansion part extending from the central part towards the first end of the blade rod part and tending to be radially away from the outer peripheral wall of the blade rod part; and a blade edge part provided at the end of the expansion part towards the first end of the blade rod part. The swivel part is coaxially arranged with the blade rod part.

2. The medical burr head of claim 1, wherein, The swivel part is in the shape of a circular arc with the convex surface of the circular arc facing away from the second end, or the swivel part is in the shape of a hollow hemisphere.

3. The medical burr head of claim 1, wherein, The outer surface of the swivel part facing away from the blade rod part is a smooth curved surface.

4. The medical grinding burr head of claim 3, wherein, The end of the expansion part towards the first end is provided with a chamfer structure to form the blade edge part.

5. The medical burr head of claim 1, wherein, The chamfer structure is provided on the side of the expansion part facing the blade rod part, or the chamfer structure is provided on the side of the expansion part facing away from the blade rod part. The blade rod part comprises a first segment and a second segment connected to each other, the diameter of the first segment is smaller than the diameter of the second segment, the end of the first segment away from the second segment is the first end, and the end of the second segment away from the first segment is the second end.

6. The medical burr head of claim 1, wherein The utility model relates to a medical grinding tool, comprising:

7. A medical grinding tool, characterized by a medical grinding tool as claimed in any one of claims 1 to 6; an outer tube assembly; and an inner rod assembly rotatably arranged in the outer tube assembly, one end of the inner rod assembly being connected to the first end of the blade rod part, and the other end of the inner rod assembly being connected to a driving mechanism. The medical grinding tool further comprises a support sleeve arranged in the outer tube assembly and sleeved on the outside of the blade rod part.

8. The medical grinding tool according to claim 7, wherein The inner rod assembly is provided with a flexible segment, the outer tube assembly is provided with a curved segment, and the flexible segment is correspondingly arranged in the curved segment.

9. The medical grinding tool according to claim 7, wherein The medical grinding tool further comprises:

10. The medical grinding tool according to claim 7, wherein a handle body, the outer tube assembly being fixed to the handle body; and a rotating shaft assembly rotatably arranged in the handle body and drivingly connected to the inner rod assembly, the inner rod assembly being connected to the driving mechanism through the rotating shaft assembly. ​

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