Bone drill for traumatic orthopedics department

Abstract

The bone drill comprises a main body and a holding part, a drill bit is installed on a clamping part at the output end of the main body, a power switch is installed on the holding part, the holding part is of a hollow structure, the bottom end of the holding part is movably connected with a cover plate, and a power source in the holding part is electrically connected with the main body. A clamping assembly is installed at the end, close to the main body, in the holding part, and the power source is detachably installed in the clamping assembly through a plugging assembly at the top end. The clamping assembly comprises a clamping block, a center hole is formed in the end, close to the power source, of the clamping block, two blind holes are symmetrically formed in the position, close to an opening, of the interior of the center hole, wedge blocks are installed in the two blind holes, and springs are installed between the wedge blocks and the longitudinal wall of the clamping block. The plugging assembly comprises a plugging rod, the plugging rod is in threaded connection with the top end of the power supply, the plugging rod is slidably sleeved with a second frustum, and the end, away from the power supply, of the plugging rod is fixedly provided with a first frustum; the top of the power supply and the holding part are quickly limited and mounted through clamping, so that the outside of the disinfected bone drill is prevented from being polluted by the power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a bone drill used in trauma orthopedics. Background Art

[0002] Bone treatment is a rather thorny issue both at home and abroad. In the orthopedics department of a hospital, an orthopedic electric drill (bone drill for short) is one of the commonly used surgical instruments. However, the manufacturing cost of a bone drill is relatively high, and it is difficult to use one instrument per person. The bone drill will come into contact with the patient's body and blood during use, and the used bone drill needs to be disinfected and sterilized before reuse.

[0003] Chinese patent document CN206867259U discloses a double-chamber bone drill, and the utility model relates to a double-chamber bone drill, and in particular to the technical field of medical surgical instruments. The double-chamber bone drill includes: a motor, a back cover, a shell, a main shaft, a hook machine component, a switch component, a battery component, a bottom cover component, a control component, and a drive system. The upper part of the shell is divided into an upper chamber and a lower chamber. The upper chamber is equipped with a motor, and the lower chamber is equipped with a drive system and a control component. The middle part of the shell is provided with a switch component, one side is provided with a hook machine component, the lower part of the shell is provided with a battery component, and the bottom of the shell is a bottom cover component. The double-chamber bone drill provided by the utility model adopts a double-chamber structure, which fully utilizes the effective space of the drill body, brings convenience to the installation of the bone drill, reduces weight, and reduces volume.

[0004] The above documents disclose the power structure of the bone drill, but do not record the components for avoiding contamination when installing the power supply; the power supply part in the bone drill is specially composed and cannot adapt to the relevant disinfection environment, such as high temperature, high pressure, etc. During installation and use, in order to avoid the power supply that has not been sterilized to high standards from contaminating the body and other components of the bone drill, in actual applications, an isolation guide tube is required to install the power supply to the bone drill, and the cooperation of two people is required, which increases the tediousness and labor requirements of the work, resulting in low work efficiency and high labor costs. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a bone drill for trauma orthopedics, by installing a locking assembly inside a gripping portion and installing a plug-in assembly on top of a power supply, and when the plug-in assembly cooperates with the locking assembly to be connected to a limit position, the cover is closed in time to achieve isolation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bone drill for trauma orthopedics, comprising a main body and a gripping part, a drill bit is installed in the clamping part at the output end of the main body, a power switch is installed in the gripping part, the gripping part is a hollow structure, a cover plate is movably connected to the bottom end of the gripping part, a power supply inside the gripping part is electrically connected to the main body, a clamping assembly is installed at one end of the gripping part close to the main body, and the power supply is detachably installed in the clamping assembly through a plug-in assembly at the top; the clamping assembly comprises a clamping block, a center hole is provided on the end of the clamping block close to the power supply, two blind holes are symmetrically provided near the opening inside the center hole, wedge blocks are installed in both blind holes, and springs are installed between the wedge blocks and the longitudinal walls of the clamping block; the plug-in assembly comprises a plug-in rod, the plug-in rod is screwed to the top end of the power supply, a second cone is slidably sleeved on the plug-in rod, and a first cone is fixedly provided at the end of the plug-in rod away from the power supply;

[0008] As a preferred technical solution of the utility model, the blind hole includes a first blind hole and a second blind hole, and the first blind hole and the second blind hole are connected to the central hole;

[0009] As a preferred technical solution of the utility model, the wedge block includes a first wedge block and a second wedge block, the wedge ends of the first wedge block and the second wedge block are both located in the center hole, and the plane end of the wedge is adjacent to the main body, and the inclined end of the wedge is adjacent to the power supply;

[0010] As a preferred technical solution of the utility model, the spring includes a first spring and a second spring, the first spring is installed at one end of the first wedge away from the center hole, and the second spring is installed at one end of the second wedge away from the center hole;

[0011] As a preferred technical solution of the utility model, a first screw hole and a second screw hole are provided on the end surface of the engaging block close to the power supply, the first screw hole is located at an end away from the opening of the first blind hole, and the two are connected to each other; the second screw hole is located at an end away from the opening of the second blind hole, and the two are connected to each other;

[0012] As a preferred technical solution of the utility model, a first screw is installed in the first screw hole, and one end of the first spring away from the center hole is sleeved on the first screw; a second screw is installed in the second screw hole, and one end of the second spring away from the center hole is sleeved on the second screw;

[0013] As a preferred technical solution of the utility model, the bottom of the grip portion extends outwardly in a direction perpendicular to the center line to form a base, and the hollow size of the internal cross section of the base is larger than the hollow size of the grip portion;

[0014] As a preferred technical solution of the utility model, an arc-shaped opening is formed at the connection between the inside of the base and the gripping part, and a conical head is provided at the end of the power supply adjacent to the main body;

[0015] As a preferred technical solution of the utility model, an electrical interface is provided on the end of the power supply close to the main body, an electrical connector is provided in the main body, and the electrical interface is electrically connected to the electrical connector;

[0016] As a preferred technical solution of the utility model, a groove is provided at the end of the power source away from the main body, and an elastic ring is installed in the groove.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. A locking block is installed on the top of the hollow cavity of the gripping part, a center hole is provided at the bottom of the locking block, two holes are symmetrically provided inside the center hole near the opening, wedges are installed in the two holes, and a spring is installed at the end of the wedge away from the center hole; the plug-in rod is screwed on the top of the power supply, a second cone is slidably sleeved on the plug-in rod, and a first cone is fixed on the top of the plug-in rod; when the gripping part is vertically sleeved on the power supply, the first cone is inserted into the center hole and squeezes the two wedges until the first cone is located at the top of the wedge, and the two wedges are reset and clamped to the first cone under the action of the spring, and the bone drill is turned 90 degrees to 180 degrees, so that the power supply squeezes the two wedges due to its own gravity, and then the cover is closed to achieve internal and external isolation, so as to avoid the power supply that has not been sterilized to high standards from contaminating the body and other components of the bone drill, thereby ensuring the safety of the operation. The entire installation process does not require the help of external objects and can be completed by one person independently, which simplifies the installation equipment and improves work efficiency.

[0019] 2. A base is provided at the bottom of the gripping part. The base is formed by extending outward from the bottom of the gripping part in a direction perpendicular to the longitudinal center line. The hollow size of the internal cross section of the base is larger than the hollow size of the gripping part. An arc-shaped opening is formed at the connection between the inside of the base and the gripping part, and a conical head is provided at the end of the power supply adjacent to the main body. During installation, the conical head of the power supply enters the inside of the base. The size of the cavity opening inside the base is large, and the size of the conical head is small, so it is not easy to collide and contact. The conical head enters the inside of the base and slides along the inner wall. It is quickly installed and fixed, so that the outside of the sterilized bone drill is prevented from being contaminated by the power supply that is not sterilized to a high standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the power supply splitting of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the conical head and arc-shaped mouth of the utility model;

[0023] Figure 4 The cross-section diagram of the utility model is shown as follows: Figure 1 ;

[0024] Figure 5 It is a cross-sectional schematic diagram of the connection between the plug-in assembly and the locking assembly of the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of the utility model when the plug-in assembly and the locking assembly are separated;

[0026] Figure 7 The cross-section diagram of the utility model is shown as follows: Figure 2 ;

[0027] In the figure: 11, main body; 12, gripping part; 13, base; 14, power switch; 15, clamping part; 16, conversion component; 17, drill bit; 18, cover plate; 19, power supply; 20, elastic ring; 21, plug-in assembly; 22, first cone; 23, second cone; 24, plug-in rod; 25, electrical connector; 26, snap assembly; 27, snap block; 28, fixing hole; 29, first blind hole; 30, second blind hole; 31, first wedge block; 32, second wedge block; 33, first spring; 34, second spring; 35, first screw hole; 36, second screw hole; 37, first screw rod; 38, second screw; 39, center hole; 40, electrical interface; 41, arc-shaped mouth; 42, conical head. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1-Figure 7As shown, a bone drill for trauma orthopedics is provided, comprising a main body 11 and a gripping portion 12, a drill bit 17 is installed on a clamping portion 15 at the output end of the main body 11, a power switch 14 is installed on the gripping portion 12, the gripping portion 12 is a hollow structure, a cover plate 18 is movably connected to the bottom end of the gripping portion 12, a power supply 19 inside the gripping portion 12 is electrically connected to the main body 11, a clamping assembly 26 is installed at one end of the gripping portion 12 adjacent to the main body 11, and the power supply 19 is detachably installed on the card through a plug-in assembly 21 at the top. The engaging assembly 26 comprises a engaging block 27, a center hole 39 is formed on the end of the engaging block 27 close to the power source 19, two blind holes are symmetrically formed near the opening of the center hole 39, wedges are installed in the two blind holes, and springs are installed between the wedges and the longitudinal walls of the engaging block 27; the plug-in assembly 21 comprises a plug-in rod 24, the plug-in rod 24 is screwed on the top of the power source 19, a second cone 23 is slidably sleeved on the plug-in rod 24, and a first cone 22 is fixedly provided on the end of the plug-in rod 24 away from the power source 19.

[0031] Among them, the output end of the main body 11 is transmitted to the clamping part 15 through the rotating shaft, and the clamping part 15 is installed with a drill bit 17 of appropriate size according to the needs of use; a conversion component 16 is installed at the end of the main body 11 away from the drill bit 17, and the conversion component 16 adjusts the direction of the rotation output to realize the forward or reverse rotation of the drill bit 17.

[0032] Figure 1-Figure 2 In the embodiment, a power switch 14 is disposed on the upper portion of the grip portion 12, and the power switch 14 and the drill bit are in the same direction, so that when the grip portion 12 is operated with one hand, the rotation speed of the drill bit 17 can be adjusted by pressing the power switch 14 with a finger to a certain depth.

[0033] The bone drill is a reusable medical device and will come into contact with the patient's body and blood during use. After use, the bone drill needs to remove the internal power supply 19 and then undergo high-temperature and high-pressure sterilization. The parts that withstand high-temperature and high-pressure sterilization are made of high-strength stainless steel. When installing the power supply 19 of the sterilized bone drill, it is necessary to avoid contact between the outside of the bone drill and the power supply 19 to avoid bacterial contamination.

[0034] Figure 4 In the embodiment, the power supply 19 is inserted into the hollow cavity of the holding portion 12. An electrical interface 40 is provided on the end of the power supply 19 adjacent to the main body 11. An electrical connector 25 is installed at a position inside the main body 11 corresponding to the electrical interface 40. The electrical interface 40 is electrically connected to the electrical connector 25 to realize power supply to the main body 11.

[0035] Figure 2 , Figure 4In the figure, a groove is provided at the end of the power source 19 away from the main body 11, and an elastic ring 20 is installed in the groove. Under normal circumstances, the elastic ring 20 is in an expanded state, and pressure needs to be applied to push the elastic ring 20 into the groove; when the power source 19 is installed, the cover 18 is closed, and the cover 18 squeezes the elastic ring 20, and the reverse tension of the elastic ring 20 makes it itself in a stable state.

[0036] Under normal conditions, when the power supply 19 is placed vertically on a plane, the self-weight of the power supply 19 can compress the elastic ring 20 into the groove at the bottom of the power supply 19 .

[0037] Figure 2 , Figure 4 , Figure 7 In the figure, a cover plate 18 is provided on the base 13 of the grip portion 12; the cover plate 18 is connected to the bottom of the base 13 by a hinged manner, and the two are opened and closed by a snap connection, and a seal is provided at the connection between the two to cut off the flow inside and outside and prevent the leakage of bacteria on the power supply 19 that has not been disinfected to a high standard.

[0038] Figure 3 In the embodiment, a base 13 is provided at the bottom of the gripping portion 12. The base 13 is formed by extending the bottom of the gripping portion 12 outward in a direction perpendicular to the longitudinal center line. The hollow size of the internal cross section of the base 13 is larger than the hollow size of the gripping portion 12. An arc-shaped opening 41 is formed at the connection between the base 13 and the gripping portion 12, and a conical head 42 is provided at the end of the power supply 19 adjacent to the main body 11. During installation, the conical head 42 of the power supply 19 enters the base 13. The size of the cavity opening inside the base 13 is large, and the size of the conical head 42 is small, so it is not easy to collide and contact. The conical head 42 enters the base 13 and slides along the inner wall. It is quickly installed and fixed, so that the outside of the bone drill after disinfection is prevented from being contaminated by the power supply that has not been disinfected at high temperature.

[0039] Figure 7 In the figure, a snap-fit ​​assembly 26 is installed at one end of the gripping portion 12 adjacent to the main body 11. The snap-fit ​​assembly 26 includes a snap-fit ​​block 27. Two or four fixing holes 28 are opened on the end surface of the snap-fit ​​block 27 away from the main body 11. The fixing holes 28 are countersunk holes. During installation, a long-handled screwdriver is inserted into the opening of the base 13 for installation.

[0040] Figure 5-Figure 6 In the embodiment, a center hole 39 is formed on the end of the engaging block 27 close to the power source 19 , and a first blind hole 29 and a second blind hole 30 are symmetrically formed near the opening inside the center hole 39 , and the first blind hole 29 and the second blind hole 30 are connected to the center hole 39 .

[0041] The wedge block includes a first wedge block 31 and a second wedge block 32. The first wedge block 31 is installed inside the first blind hole 29, and a first spring 33 is installed between the first wedge block 31 and the bottom of the first blind hole 29; the second wedge block 32 is installed inside the second blind hole 30, and a second spring 34 is installed between the second wedge block 32 and the bottom of the second blind hole 30.

[0042] The wedge ends of the first wedge block 31 and the second wedge block 32 are both located in the central hole 39 , and the planar ends of the wedges are adjacent to the main body 11 , and the inclined ends of the wedges are adjacent to the power source 19 .

[0043] A first screw hole 35 and a second screw hole 36 are provided on the end surface of the engaging block 27 close to the power source 19. The first screw hole 35 is located at the end away from the opening of the first blind hole 29, and the first screw hole 35 and the first blind hole 2 are connected to each other; the second screw hole 36 is located at the end away from the opening of the second blind hole 30, and the second screw hole 36 and the second blind hole 30 are connected to each other. A first screw rod 37 is installed in the first screw hole 35, and a ring body (not shown in the figure) is provided at the end of the first spring 33 away from the center hole 39, and the ring body is sleeved on the first screw rod 37 to achieve fixation; a second screw rod 38 is installed in the second screw hole 36, and a ring body (not shown in the figure) is provided at the end of the second spring 34 away from the center hole 39, and the ring body is sleeved on the second screw rod 38 to achieve fixation. Both the first screw hole 35 and the second screw hole 36 are provided with countersunk heads.

[0044] When installing the wedge, first install the first spring 33 and the second spring 34 into the first blind hole 29 and the second blind hole 30 respectively;

[0045] Then, the first wedge block 31 is obliquely inserted into the first blind hole 29 from the center hole 39, and the second wedge block 32 is obliquely inserted into the second blind hole 30 from the center hole 39. The lengths of the first wedge block 31 and the second wedge block 32 are both equal to or slightly larger than the diameter of the center hole 39. If they are too long, they cannot be inserted from the center hole 39.

[0046] The first blind hole 29 and the second blind hole 30 can also be opened as through holes, and the wedge block and the spring can be installed from the hole away from the center hole 39, and then the spring end can be fixed by a screw rod to avoid the disadvantage of the wedge block being too long when installing from the center hole 39.

[0047] Figure 3 , Figure 5 , Figure 6 In the figure, the plug assembly 21 includes a plug rod 24, a first cone 22 and a second cone 23. The second cone 23 is slidably mounted on the plug rod 24, and the first cone 22 is fixedly mounted at the end of the plug rod 24 away from the power supply 19. The plug rod 24 is screwed to the top of the power supply 19. When the plug assembly 21 is not needed, it can be disassembled to charge the power supply 19.

[0048] The plug-in rod 24 and the center hole 39 are set to be relatively long, and a sleeve (not shown in the figure) is installed between the second cone 23 and the power supply 19. The sleeve is used to raise the position of the second cone 23 to facilitate the vertical placement of the power supply 19. When the grip portion 12 is placed, there is enough space at the bottom to ensure that the bone drill does not touch the table top.

[0049] When using the installed power supply 19, place the power supply 19 vertically on a horizontal table, place the hand-held grip portion 12 directly above the power supply 19, and slowly move it downward so that the grip portion 12 is sleeved on the outside of the power supply 19, and apply force downward to make the first cone 22 squeeze the first wedge block 31 and the second wedge block 32 to move to both sides. When the first cone 22 rises to above the first wedge block 31 and the second wedge block 32 and feels the spring rebound vibration, the hand-held grip portion 12 is flipped 90-180 degrees, and the cover 18 is closed to complete the sterile installation of the power supply 19 by one person.

[0050] When removing the power supply 19, open the cover 18 and apply external force along the longitudinal direction of the power supply 19 close to the main body 11, so that the power supply 19 is displaced and the second cone 23 squeezes the first wedge block 31 and the second wedge block 32, the second cone 23 squeezes the first wedge block 31 and the second wedge block 32 to move to both sides, and the second cone 23 moves in the direction close to the main body 11. When the large end surface of the truncated cone of the second cone 23 is displaced to above the first wedge block 31 and the second wedge block 32, the large end surfaces of the truncated cones of the first cone 22 and the second cone 23 coincide with each other (the spring rebound vibration can be felt), the elastic ring 20 at the bottom end of the handheld power supply 19 is dragged in the direction away from the main body 11, the second cone 23 squeezes the first wedge block 31 and the second wedge block 32 to move to both sides, the second cone 23 and the large end surfaces of the truncated cones of the first cone 22 are separated from the first wedge block 31 and the second wedge block 32 together, and the power supply 19 is taken out.

[0051] The utility model uses the above embodiments to illustrate the technical concept of the utility model, but the utility model is not limited to the above embodiments, that is, it does not mean that the utility model must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the utility model fall within the protection scope and disclosure scope of the utility model.

Claims

1. A bone drill for trauma orthopedics, comprising a main body (11) and a gripping portion (12), wherein a drill bit (17) is mounted on a clamping portion (15) at an output end of the main body (11), and a power switch (14) is mounted on the gripping portion (12), characterized in that: The gripping portion (12) is a hollow structure. The bottom end of the gripping portion (12) is movably connected to a cover plate (18). The power supply (19) inside the gripping portion (12) is electrically connected to the main body (11). A snap-fit ​​assembly (26) is installed at one end of the gripping portion (12) adjacent to the main body (11). The power supply (19) is detachably installed in the snap-fit ​​assembly (26) via a plug-in assembly (21) at the top. The snap-fit ​​assembly (26) includes a snap-fit ​​block (27). The snap-fit ​​block (27) is adjacent to the power supply (19). A central hole (39) is provided at the end of the power source (19), two blind holes are symmetrically provided inside the central hole (39) near the opening, wedges are installed in the two blind holes, and springs are installed between the wedges and the longitudinal walls of the engaging blocks (27); the plug-in assembly (21) comprises a plug-in rod (24), the plug-in rod (24) is screwed to the top of the power source (19), a second cone (23) is slidably sleeved on the plug-in rod (24), and a first cone (22) is fixedly provided at the end of the plug-in rod (24) away from the power source (19).

2. The bone drill for trauma orthopedics according to claim 1, characterized in that: The blind hole comprises a first blind hole (29) and a second blind hole (30), and the first blind hole (29) and the second blind hole (30) are in communication with the central hole (39).

3. The bone drill for trauma orthopedics according to claim 1, characterized in that: The wedge block comprises a first wedge block (31) and a second wedge block (32), wherein the wedge ends of the first wedge block (31) and the second wedge block (32) are both located in the central hole (39), and the plane end of the wedge is adjacent to the main body (11), and the inclined end of the wedge is adjacent to the power source (19).

4. The bone drill for trauma orthopedics according to claim 1, characterized in that: The spring comprises a first spring (33) and a second spring (34). The first spring (33) is installed at one end of the first wedge block (31) away from the center hole (39), and the second spring (34) is installed at one end of the second wedge block (32) away from the center hole (39).

5. The bone drill for trauma orthopedics according to claim 4, characterized in that: A first screw hole (35) and a second screw hole (36) are provided on the end surface of the engaging block (27) close to the power source (19); the first screw hole (35) is located at an end away from the opening of the first blind hole (29), and the two are connected to each other; the second screw hole (36) is located at an end away from the opening of the second blind hole (30), and the two are connected to each other.

6. The bone drill for trauma orthopedics according to claim 5, characterized in that: A first screw rod (37) is installed in the first screw hole (35), and one end of the first spring (33) away from the center hole (39) is sleeved on the first screw rod (37); a second screw rod (38) is installed in the second screw hole (36), and one end of the second spring (34) away from the center hole (39) is sleeved on the second screw rod (38).

7. The bone drill for trauma orthopedics according to claim 1, characterized in that: The bottom of the gripping portion (12) extends outwardly in a direction perpendicular to the center line to form a base (13), and the hollow size of the internal cross section of the base (13) is larger than the hollow size of the gripping portion (12).

8. The bone drill for trauma orthopedics according to claim 7, characterized in that: An arc-shaped opening (41) is formed at the connection between the base (13) and the gripping portion (12), and a conical head (42) is provided at the end of the power source (19) adjacent to the main body (11).

9. The bone drill for trauma orthopedics according to claim 1, characterized in that: An electrical interface (40) is provided on the end of the power source (19) adjacent to the main body (11), an electrical connector (25) is provided inside the main body (11), and the electrical interface (40) is electrically connected to the electrical connector (25).

10. The bone drill for traumatology according to claim 1, characterized in that: The end of the power source (19) away from the main body (11) is provided with a groove, and an elastic ring (20) is installed in the groove.

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