CN216777159U - Screw tap and tapping device for orthopedics department - Google Patents

Abstract

The application discloses a screw tap and a tapping device for orthopedics department, the screw tap includes tapping portion, and tapping portion includes drill bit end and the screw thread section that is connected, and the surface of screw thread section is provided with screw thread and chip groove, and the chip groove is the spiral and distributes, and the chip groove is close to the one end of drill bit end is equipped with the opening, and the drill bit end is equipped with first cutting edge and second cutting edge, and the blade of first cutting edge is configured into the edge of chip groove, and the blade of second cutting edge is configured into the edge of opening, the screw tap has trompil and drilling function concurrently, has labour saving and time saving, convenient operation, is favorable to reducing the advantage of operation cost; tapping unit include the screw tap and install in the driving piece of screw tap has tapping efficiency height, convenient operation's advantage.

Description

Screw tap and tapping device for orthopedics department

Technical Field

The application relates to the technical field of medical equipment, in particular to a screw tap and tapping device for orthopedics.

Background

In an orthopedic surgery, a steel plate is generally required to be used for positioning a damaged bone, and the steel plate is often used in cooperation with a bone screw, i.e., the bone screw penetrates through the steel plate and is fixed in the damaged bone. Before the steel plate is fixed at the injured bone, a hole needs to be formed at the injured bone, an internal thread is processed and formed in the hole, and a bone screw with matched specification is selected according to the depth of the hole to fix the steel plate.

The screw tap has the advantages of simple structure and convenience in operation as an internal thread machining tool, and can be manually operated to form internal threads and can also be used for forming the internal threads by using external driving equipment for auxiliary machining. The existing screw tap generally has no or weak tapping capability, when a screw hole matched with a bone screw is drilled at an injured bone, a drilling tool is required to tap a hole, and then a screw tap is used for drilling a hole to form an internal thread, so that the defects of inconvenience in operation, time consumption and low efficiency are caused.

Therefore, how to provide a tap with the functions of tapping and drilling so as to improve the tapping efficiency and the convenience of the orthopedic surgery is of great significance.

Disclosure of Invention

In view of the above, the present application provides a tap and a tapping device for orthopedics, which overcome the disadvantages that the existing tap has no or weak hole-forming capability.

The technical scheme of the application is as follows:

in a first aspect, the application provides a screw tap for orthopedics department, the screw tap comprises a tapping part, the tapping part comprises a drill bit end and a thread section which are connected, the outer surface of the thread section is provided with threads and chip removal grooves, the chip removal grooves are distributed spirally, and one ends of the chip removal grooves, which are close to the drill bit end, are provided with notches; the drill bit end is provided with a first cutting edge and a second cutting edge, the cutting edge of the first cutting edge is configured to be the edge of the chip groove, and the cutting edge of the second cutting edge is configured to be the edge of the notch.

Further, the edge of the first cutting edge is connected with the edge of the second cutting edge.

Further, the cutting edge of the first cutting edge is arc-shaped, and the cutting edge of the second cutting edge is linear.

Further, the surface of the tapping part is provided with a coating layer, and the material of the coating layer comprises titanium nitride.

Further, the screw tap still include with the body of rod portion that the tapping portion is connected, body of rod portion is including relative first end and the second end that sets up, first end with the screw thread section is kept away from the one end of drill bit end is connected.

Further, the rod body is cylindrical, and the diameter of the rod body is smaller than the outer diameter of the thread section; or the rod body is in a round table shape, the diameter of the rod body is gradually reduced in the axial direction close to the tapping part, and the diameter of the first end is smaller than the outer diameter of the thread section.

Further, the tap further comprises a tail portion, and the second end of the shank portion is connected to the tail portion.

Further, the rod body part comprises a first connecting rod section and a second connecting rod section which are connected, the first connecting rod section is connected with the tapping part, and the second connecting rod section is connected with the tail part.

Further, the first connecting rod section is cylindrical, and the diameter of the first connecting rod section is smaller than the outer diameter of the thread section.

Furthermore, the second connecting rod section is in a circular truncated cone shape, and the diameter of the second connecting rod section is gradually reduced in the axial direction of the tail portion pointing to the first connecting rod section.

Further, the tail part is provided with a driving piece installation groove.

In a second aspect, the present application provides a tapping device for orthopedics comprising a driver and a tap according to any one of the first aspect, the driver being adapted to be mounted to the tap.

Further, the drive member includes a drill and/or driver.

The application provides a screw tap and chasing bar for orthopedics has following technological effect:

a screw tap for orthopedics has trompil and drilling function concurrently in this application, has overcome the defect that current screw tap does not have trompil ability or the trompil ability is relatively weak for need not to accomplish the trompil and form the internal screw thread operation at downthehole processing with the help of the drilling tool among the orthopedic operation, have labour saving and time saving, be favorable to reducing the advantage of operation cost. The tap for orthopedics department both can artifical manual completion tapping, also can accomplish the tapping under the effect of driving piece, and the flexible operation is convenient.

The tapping device of this application include the driving piece and be used for orthopedic screw tap, wherein, the driving piece adaptation is installed in the screw tap, and the drive effect via the driving piece makes the screw tap accomplish the trompil and in downthehole processing formation internal thread's operation, has tapping efficiency height, convenient operation's advantage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective view of a tap for orthopedics according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a tap for orthopedics according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a tapping part in a tap for orthopedics according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of the dashed box of FIG. 3;

fig. 5 is a schematic view showing the distribution of the gaps in the view angle of the direction G in fig. 2.

The reference numbers are as follows:

1: a screw tap; 11: a tapping section; 12: a lever portion; 13: a tail portion; 111: drilling a head end; 112: a threaded segment; 113: opening the gap; 114: a first cutting edge; 115: a second cutting edge; 121: a first end; 122: a second end; 123: a first link section; 124: a second link section; 1121: a thread; 1122: a chip groove.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the application provides a tap for orthopedics department, as shown in fig. 1 to 4, the tap 1 comprises a tapping portion 11, the tapping portion 11 comprises a drill bit end 111 and a threaded section 112 which are connected, a thread 1121 and a chip discharging groove 1122 are arranged on the outer surface of the threaded section 112, the chip discharging groove 1122 is spirally distributed, a notch 113 is arranged at one end of the chip discharging groove 1122 close to the drill bit end 111, and the drill bit end 111 is provided with a first cutting edge 114 and a second cutting edge 115, wherein the cutting edge of the first cutting edge 114 is configured as the edge of the chip discharging groove 1122, and the cutting edge of the second cutting edge 115 is configured as the edge of the notch 113.

The surface of the tapping part 11 is provided with a coating layer, the coating layer is made of titanium nitride, the coating layer can enhance the hardness of the tapping part 11 and endow the tapping part 11 with lubricity, so that the screw tap 1 can easily enter a bone, the pain of a patient is reduced, the hole opening and drilling capacity of the screw tap 1 is improved, and the problem that the screw tap 1 deforms, twists or breaks in the tapping process is effectively avoided; in addition, be favorable to reducing the frictional force between the inside wall of tapping portion 11 and skeleton trompil, avoid the heat that the friction produced to lead to the internal thread deformation of processing to influence the tapping quality, be unfavorable for follow-up connection therapeutic equipment.

The shape of the thread 1121 is not particularly limited, and may be, for example, a triangular thread, a right-angled thread, a zigzag thread, etc., and an appropriate thread shape may be selected according to the machining requirements of the actual internal thread.

The first cutting edge 114 and the second cutting edge 115 effectively improve the cutting ability of the tap 1, thereby giving the tap 1 a desired hole forming ability, and overcoming the defect that the existing tap has no hole forming ability or has a weak hole forming ability. The conventional screw tap used in the orthopedic surgery comprises the following steps: the hole is opened on the bone by using the drilling tool, and then the internal thread is processed and formed by drilling the hole by using the tap, so two instruments are required to be used in the process of processing and forming the threaded hole on the bone, the operation time is prolonged, and the operation cost is increased. Adopt the screw tap of this application embodiment to carry out bone surgery, only utilize the screw tap can realize trompil and the operation of processing formation internal thread, have labour saving and time saving, convenient operation's advantage.

Referring to fig. 3 and 4, the cutting edge of the first cutting edge 114 is connected to the cutting edge of the second cutting edge 115, so that the cutting area is effectively enlarged to enlarge a hole in the tapping process of the tap 1, the cutting efficiency is improved, and the tapping capability of the tap 1 is further improved. Further, the cutting edge of the first cutting edge 114 is arc-shaped, and the cutting edge of the second cutting edge 115 is linear, so that when the tapping difficulty of the tap 1 is reduced, bone chips formed by tapping conveniently enter the chip discharge groove 1122 through the cutting edge of the first cutting edge 114, and are discharged through the chip discharge groove 1122, and the tapping quality is effectively prevented from being influenced by excessive bone chips.

It should be noted that the shape and number of the opening 113 are not specifically limited, and may be selected according to actual needs, and it is only necessary to configure at least one edge of the opening 113 as the cutting edge of the second cutting edge 115. For example, referring to fig. 5, the number of the breaks 113 is three, and the three breaks 113 are uniformly distributed at the drill bit end.

Referring to fig. 1 and 2, the tap 1 further includes a rod 12 connected to the tapping portion 11, the rod 12 includes a first end 121 and a second end 122 opposite to each other, and the first end 121 is connected to an end of the threaded section 112 away from the bit end 111.

The shape of the rod body 12 is not particularly limited, and for example, the rod body 12 may have a regular shape such as a cylindrical shape or a circular truncated cone shape, or may have an irregular shape; the shaft 12 may be an integrally formed structure, or may be a combined structure formed by connecting multiple sections of shafts in sequence. When the rod body 12 is cylindrical, the diameter of the rod body 12 is preferably smaller than the thread outer diameter of the thread section 112, so as to reduce the resistance of the tap 1 in tapping, so that the tapping part 11 can more easily enter the bone, thereby reducing the difficulty of tapping; when the shank portion 12 is frustoconical, it is preferable that the diameter of the shank portion 12 gradually decreases in an axial direction adjacent to the tapping portion 11, and the diameter of the first end 121 is smaller than the external diameter of the threaded section 112, so as to reduce the resistance of the tap 1 to tapping, so that the tapping portion 11 can more easily enter the bone, thereby reducing the difficulty of tapping and the weight of the entire tap 1.

In the tap shown in fig. 1 to 4, the rod body 12 includes a first rod section 123 and a second rod section 124 connected to each other, the first rod section 123 has a cylindrical shape, and the diameter of the first rod section 123 is smaller than the outer diameter of the thread section 112; the second connecting rod section 124 is in a circular truncated cone shape, and the diameter of the second connecting rod section 124 gradually decreases in the axial direction near the first connecting rod section 123. Wherein the first end 121 is the end of the first connecting rod segment 123 close to the tapping portion 11, and the second end 122 is the end of the second connecting rod segment 124 far from the first connecting rod segment 123.

With continued reference to fig. 1 and 2, the tap 1 further comprises a tail portion 13 connected to the second connecting rod section 124, that is, the second end 122 of the rod portion 12 is connected to the tail portion 13, the tail portion 13 can be used for installing a driving member, such as a drill and/or a driver, including but not limited to a straight driver, a cross driver, a m-type driver, a quincunx driver, a hexagonal driver or a Y-type driver, and the tail portion 13 also has a handle-like function, and manual drilling and boring can be achieved by holding the tail portion 13 by hand.

It will be appreciated that when the drive member is a drill, the tail portion 13 is provided with a drive member mounting recess 131 which is adapted to an adapter of the drill, for example: the tail part 13 is provided with a clamping groove which is adaptive to and clamped with an adapter of the electric drill, the structure of the tail part 13 can be adaptively configured according to the structures of different adapters, and the tap 1 is driven to tap through the rotation of the electric drill. When the driving member is a driver, the tail portion 13 is provided with a driving member mounting groove adapted to the head portion of the driver, for example: the tail part 13 is provided with an inner hexagonal clamping groove matched with the head part of the hexagonal screwdriver, and the screwdriver is rotated to drive the screw tap 1 to tap.

The embodiment of the application also provides a tapping device for orthopedics department, which comprises a driving part and the screw tap, wherein the driving part is adapted to be installed on the screw tap, and the driving part comprises but is not limited to a drill and/or a screw driver.

In the tapping device of this application embodiment, under the driving action of driving piece, the tap accomplishes the trompil and forms the operation of internal thread at downthehole processing, has tapping efficiency height, convenient operation's advantage.

The tap and tapping device for orthopedics provided by the embodiments of the present application are described in detail, and the principle and the implementation manner of the present application are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (13)

1. The screw tap for the orthopaedics department is characterized by comprising a tapping part (11), wherein the tapping part (11) comprises a drill bit end (111) and a threaded section (112) which are connected, the outer surface of the threaded section (112) is provided with threads (1121) and chip flutes (1122), the chip flutes (1122) are distributed in a spiral shape, and one end, close to the drill bit end (111), of each chip flute (1122) is provided with a notch (113); the drill bit end (111) is provided with a first cutting edge (114) and a second cutting edge (115), the edge of the first cutting edge (114) is configured as the edge of the chip flute (1122), and the edge of the second cutting edge (115) is configured as the edge of the notch (113).

2. A tap according to claim 1, characterised in that the edge of the first cutting edge (114) is connected to the edge of the second cutting edge (115).

3. A tap according to claim 2, characterised in that the edge of the first cutting edge (114) is curved and the edge of the second cutting edge (115) is rectilinear.

4. The tap according to claim 1, wherein the surface of the tapping portion (11) is provided with a plating layer, and the material of the plating layer comprises titanium nitride.

5. The tap according to any one of claims 1 to 4, wherein said tap (1) further comprises a body portion (12) connected to said tapping portion (11), said body portion (12) comprising a first end (121) and a second end (122) arranged opposite each other, said first end (121) being connected to an end of said threaded section (112) remote from said bit end (111).

6. The tap according to claim 5, wherein said shank portion (12) is cylindrical, said shank portion (12) having a diameter smaller than the external diameter of said threaded segment (112); or the rod body part (12) is in a circular truncated cone shape, the diameter of the rod body part (12) is gradually reduced in the axial direction close to the tapping part (11), and the diameter of the first end (121) is smaller than the thread outer diameter of the thread section (112).

7. The tap according to claim 5, wherein said tap (1) further comprises a tail portion (13), said second end (122) of said shank portion (12) being connected to said tail portion (13).

8. The tap according to claim 7, wherein said shank portion (12) comprises a first connecting rod segment (123) and a second connecting rod segment (124) connected, said first connecting rod segment (123) being connected with said tapping portion (11) and said second connecting rod segment (124) being connected with said tail portion (13).

9. The tap according to claim 8, wherein said first rod segment (123) is cylindrical, said first rod segment (123) having a diameter smaller than the external diameter of said threaded segment (112).

10. The tap according to claim 8, wherein said second connecting rod segment (124) is frustoconical, said second connecting rod segment (124) having a decreasing diameter in an axial direction in which said tail portion (13) is directed towards said first connecting rod segment (123).

11. A tap according to claim 7, characterised in that said tail portion (13) is provided with a driver mounting groove (131).

12. Tapping device for orthopaedics, characterized by comprising a driver and a tap (1) according to any one of claims 1 to 11, wherein the driver is adapted to be mounted to the tap.

13. Tapping device according to claim 12 wherein the drive comprises a drill and/or driver.

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