Medical power osteotome
By designing a medical powered bone knife with a disposable blade and tool sheath, the problems of infection and heat damage caused by repeated use of traditional bone knives are solved, and safe and efficient bone cutting and cooling protection are achieved.
Patent Information
- Application Number
- CN202422622188.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Repeated use of traditional bone knives is prone to infection, and the heat generated during the cutting process can damage the nerves around the bone, increasing medical costs and wasting resources.
A medical powered bone knife is designed. The knife head and knife sheath are disposable products. The connecting shaft is driven to rotate by a power mobile phone. The reciprocating motion of the knife head is achieved by combining a cylindrical cam and a cam connection assembly. Heat is removed through an inner sleeve and a liquid flow channel.
It effectively avoids cross infection, reduces medical costs, and protects the nerves around bones while cooling during the cutting process.
Smart Images
Figure CN223438602U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bone knife, in particular to a medical power bone knife. BACKGROUND
[0002] In surgical operation, power bone knife is usually used to cut bone, but the traditional bone knife needs to be repeatedly used, which increases the risk of infection. The disposable bone knife increases the medical cost and wastes resources. In addition, the power bone knife generates a large amount of heat under the driving of the motor during the cutting process of the bone knife, which causes local high temperature of the bone and damages the nerves around the bone, causing unpredictable risks in the operation. SUMMARY
[0003] The utility model aims at providing a medical power bone knife to solve the technical problems in the prior art, which can effectively reduce the use cost and solve the problem of heat generation during work.
[0004] The utility model provides a medical power bone knife, including electric saw rod outer cover, one end of electric saw rod outer cover is connected with one end of electric saw rod assembly, the other end of electric saw rod assembly is installed with tool shroud, the rotation of being installed with drive shaft in electric saw rod assembly, one end of drive shaft is equipped with cam connection component, the connection axle is installed in electric saw rod outer cover, be equipped with cylindrical cam on the connection axle, the cam connection component is connected with the cylindrical cam, the other end of drive shaft is installed with tool bit.
[0005] Preferably, the electric saw rod outer cover is a cylindrical structure, the outer wall of the electric saw rod outer cover has an anti-skid convex ring, the outer wall of the end of the electric saw rod outer cover away from the electric saw rod assembly forms a connecting boss, and the connecting boss is provided with a connecting groove.
[0006] Preferably, the electric saw rod assembly includes an electric saw outer sleeve, an electric saw inner sleeve and a connecting head, the electric saw outer sleeve is sleeved on the electric saw inner sleeve, and the two are fixedly connected, one end of the connecting head is fixedly connected with one end of the electric saw outer sleeve, and the other end of the connecting head is inserted into and fixedly connected with the electric saw rod outer sleeve.
[0007] Preferably, the pipe wall of the electric saw inner sleeve is provided with an opening, the pipe wall of one end of the electric saw outer sleeve connected with the connecting head is provided with a second liquid inlet hole, the connecting head is formed with a liquid flow channel, the electric saw rod outer sleeve is provided with a first liquid inlet hole, the first liquid inlet hole is connected with one end of the liquid flow channel, the other end of the liquid flow channel is connected with the second liquid inlet hole, and the second liquid inlet hole is connected with the opening on the electric saw inner sleeve.
[0008] Preferably, a bearing fixing plate is fixedly arranged in the electric saw rod outer sleeve, a bearing is fixedly arranged on the bearing fixing plate, and the connecting shaft penetrates through the bearing and is in interference fit with an inner ring surface of the bearing.
[0009] Preferably, the cam connecting assembly comprises a long strip plate, a connecting pipe, a connecting rod and a roller, the connecting head is formed with a long strip plate mounting groove, the long strip plate mounting groove is in the same shape and size as the long strip plate, the long strip plate is slidingly mounted in the long strip plate mounting groove, the connecting pipe and the connecting rod are arranged on both sides of the long strip plate, the connecting pipe is located at the center of the long strip plate, the connecting rod is perpendicular to the long strip plate and located at one end of the long strip plate, the roller is rotatably mounted on the end of the long strip plate through a rotating shaft, and the roller is located in the track groove of the cylindrical cam.
[0010] Preferably, the driving shaft is inserted into and slidingly connected with the electric saw inner sleeve, one end of the driving shaft is inserted into and fixed with the connecting pipe, and the other end of the driving shaft is formed with a threaded hole.
[0011] Preferably, the cutter comprises a threaded column, a round rod and a blade, the threaded column is fixedly arranged at one end of the round rod, the blade is fixedly arranged at the other end of the round rod, the threaded column is in threaded connection with the threaded hole on the driving shaft, and the round rod is inserted into and slidingly connected with the cutter sleeve.
[0012] Preferably, the blade is a right-angled trapezoidal blade, and the oblique side of the blade is provided with sawteeth.
[0013] Compared with the prior art, the utility model discloses electric saw rod outer sleeve, electric saw rod assembly one end with electric saw rod outer sleeve one end is connected, electric saw rod assembly the other end installs cutter sleeve, electric saw rod assembly rotatably installs driving shaft, driving shaft one end is equipped with cam connecting component, electric saw rod outer sleeve installs connecting shaft, connecting shaft is equipped with cylindrical cam, cam connecting component with cylindrical cam connects, driving shaft the other end installs cutter head.
[0014] The cutter sleeve and the electric saw rod assembly are also in threaded connection, the cutter sleeve and the cutter head can be made into disposable products, a new cutter head and cutter sleeve can be replaced after each operation, the problem of cross infection caused by incomplete disinfection in the prior art is effectively solved, and medical costs are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is an isometric view of the utility model;
[0016] Figure 2 is an isometric view of the utility model;
[0017] Figure 3 is a half cutaway view of the utility model;
[0018] Figure 4 is a half cutaway view of the utility model;
[0019] Figure 5 is a half cutaway view of the utility model;
[0020] Figure 6 is a half cutaway view of the utility model.
[0021] Explanation of reference signs: electric saw rod sleeve 1, cutter sheath 2, drive shaft 3, connecting shaft 4, cylindrical cam 5, cutter head 6, anti-skid convex ring 7, connecting groove 8, electric saw outer sleeve pipe 9, electric saw inner sleeve pipe 10, connecting head 11, liquid flow channel 12, second liquid inlet hole 13, bearing fixing plate 14, bearing 15, long strip plate 16, connecting pipe 17, connecting rod 18, roller 19, long strip plate mounting groove 20, track groove 21, threaded hole 22, threaded column 23, round rod 24, blade 25, sawtooth 26, character-shaped connecting convex block 27, first liquid inlet hole 28, opening 29, connecting convex platform 30. DETAILED DESCRIPTION
[0022] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be explained as the limitation of the utility model.
[0023] Embodiment of the utility model: as Figures 1-6 shown, a medical power bone cutter, including electric saw rod sleeve 1, one end of electric saw rod sleeve 1 is connected with one end of electric saw rod assembly, another end of electric saw rod assembly is installed with cutter sheath 2, drive shaft 3 is rotatably installed in electric saw rod assembly, one end of drive shaft 3 is equipped with cam connecting assembly, connecting shaft 4 is installed in electric saw rod sleeve 1, and cylindrical cam 5 is equipped on connecting shaft 4, cam connecting assembly is connected with cylindrical cam 5, and another end of drive shaft 3 is installed with cutter head 6.
[0024] In the embodiment, cutter sheath 2 and cutter head 6 are disposable products, and new ones are replaced after use once, so that the cross infection problem caused by incomplete disinfection can be effectively solved.
[0025] The utility model uses with the power mobile phone in the prior art, the power mobile phone and power system host computer are all prior art, its structure is not in the utility model, the electric saw rod outer cover 1 is cylindrical structure, the outer wall of electric saw rod outer cover 1 has anti -skid convex ring 7, the outer wall of electric saw rod outer cover 1 is formed with the connecting boss 30 away from electric saw rod assembly, and a connecting groove 8 is formed in the connecting boss 30.
[0026] The connecting groove 8 is used for the connecting block on the power mobile phone, and the connecting block on the power mobile phone is rotated after passing through the connecting groove 8, the connecting block is connected with the connecting boss 30, the electric saw rod outer cover 1 is fixed with the power mobile phone. The end of connecting shaft 4 has a character-shaped connecting block 27, and the end of the rotating shaft of the power mobile phone has a groove, when the electric saw rod outer cover 1 is connected with the power mobile phone, the character-shaped connecting block 27 of connecting shaft 4 is inserted into the groove of the rotating shaft of the power mobile phone, and effective connection is realized.
[0027] When the rotating shaft of the power mobile phone rotates, the connecting shaft 4 is rotated, the cylindrical cam 5 at the end of the connecting shaft 4 is connected with the cam connecting assembly on the driving shaft 3, the driving shaft 3 is reciprocated along the axial direction, so that the cutter head 6 is reciprocated, and the cutting of bone is realized.
[0028] In a specific embodiment, the electric saw rod assembly includes an electric saw outer sleeve pipe 9, an electric saw inner sleeve pipe 10 and a connecting head 11, the electric saw outer sleeve pipe 9 is sleeved on the electric saw inner sleeve pipe 10, and the two are fixedly connected, one end of the connecting head 11 is fixedly connected with one end of the electric saw outer sleeve pipe 9, and the other end of the connecting head 11 is inserted and fixedly connected with the electric saw rod outer cover 1.
[0029] The outer diameter of the electric saw inner sleeve pipe 10 is equal to the inner diameter of the electric saw outer sleeve pipe 9, and the two are fixedly connected, the pipe wall of the electric saw inner sleeve pipe 10 is provided with an opening 29, the pipe wall of one end of the electric saw outer sleeve pipe 9 connected with the connecting head 11 is provided with a second liquid inlet hole 13, the connecting head 11 is formed with a liquid flow channel 12, the electric saw rod outer cover 1 is provided with a first liquid inlet hole 28, the first liquid inlet hole 28 is connected with one end of the liquid flow channel 12, the other end of the liquid flow channel 12 is connected with the second liquid inlet hole 13, and the second liquid inlet hole 13 is connected with the opening 29 on the electric saw inner sleeve pipe 10.
[0030] When the inner sleeve 10 is assembled in the outer sleeve 9, the second liquid inlet 13 is communicated with the interior of the inner sleeve 10 through the opening 29. During operation, the flushing pipe of the flushing device is connected to the first liquid inlet 28 on the outer sleeve 1, water is injected into the first liquid inlet 28 through the flushing pipe, and the water flows into the inner sleeve 10 along the liquid channel 12 and the second liquid inlet 13, and then flows into the tool sheath 2 from the end of the inner sleeve 10, and finally flows out from the end of the tool sheath 2. The water can take away the heat generated by the driving shaft 3 and the tool head 6 during operation, and can protect the nerves around the bone.
[0031] Further, the bearing fixing plate 14 is fixed in the outer sleeve 1, the bearing 15 is fixed on the bearing fixing plate 14, and the connecting shaft 4 penetrates through the bearing 15 and is in interference fit with the inner ring surface of the bearing 15.
[0032] The bearing 15 cannot be axially displaced after being installed on the bearing fixing plate 14, and the connecting shaft 4 cannot be axially displaced relative to the bearing 15 after being assembled with the bearing 15, and the connecting shaft 4 can only rotate. The bearing 15 plays a role in smooth rotation of the connecting shaft 4, and also plays a role in preventing the connecting shaft 4 from being axially displaced.
[0033] The cam connecting assembly includes a long strip plate 16, a connecting pipe 17, a connecting rod 18, and a roller 19. The connecting head 11 is formed with a long strip plate mounting groove 20, the cross-sectional shape and size of the long strip plate mounting groove 20 are the same as those of the long strip plate 16, the long strip plate 16 is slidingly installed in the long strip plate mounting groove 20, the long strip plate 16 is fixed with the connecting pipe 17 on one side thereof, and the long strip plate 16 is fixed with the connecting rod 18 on the other side thereof, wherein the connecting pipe 17 is located at the center of the long strip plate 16, i.e., the connecting pipe 17 is coaxial with the long strip plate 16, the connecting rod 18 is perpendicular to the long strip plate 16 and located at one end of the long strip plate 16, and the roller 19 is rotatably installed on the end of the long strip plate 16 through a rotating shaft and located in the track groove 21 of the cylindrical cam 5.
[0034] The cylindrical cam 5 is a prior art, which can be directly purchased. The size of the track groove 21 on the cylindrical cam 5 affects the amplitude of the reciprocating movement of the tool head 6, so if there is a different demand for the movement amplitude of the tool head 6, a cylindrical cam 5 with a suitable size of the track groove 21 can be replaced to achieve the demand.
[0035] The long strip plate mounting groove 20 is coaxial with the connecting head 11, and the long strip plate mounting groove 20 plays a role in limiting the degrees of freedom of the long strip plate 16, so that the long strip plate 16 can only move axially in the long strip plate mounting groove 20 and cannot move in other directions, thereby ensuring that the driving shaft 3 can only move axially.
[0036] The connecting rod 18 is not in contact with the cylindrical cam 5, and the connecting rod 18 is used to install the roller 19, which is used to move the long strip plate 16 by cooperating with the track groove 21. The length of the connecting rod 18 should be greater than the one-way movement distance of the long strip plate 16.
[0037] The connecting pipe 17 is used to be connected with one end of the driving shaft 3, and one end of the driving shaft 3 is inserted into the connecting pipe 17 and is fixed.
[0038] Further, the driving shaft 3 is inserted into the electric saw inner sleeve pipe 10 and is in sliding connection, one end of the driving shaft 3 is inserted into the connecting pipe 17 and is fixed, and the fixing mode can adopt bonding, welding or riveting, etc., and the other end of the driving shaft 3 is formed with the threaded hole 22.
[0039] The cutter 6 comprises a threaded column 23, a round rod 24 and a blade 25, the threaded column 23 is fixedly arranged at one end of the round rod 24, the blade 25 is fixedly arranged at the other end of the round rod 24, the threaded column 23 is in threaded connection with the threaded hole 22 on the driving shaft 3, and the round rod 24 is inserted into the cutter sheath 2 and is in sliding connection.
[0040] It should be noted that, since water needs to flow out from the end of the cutter sheath 2, the diameter of the round rod 24 should be slightly smaller than the hole diameter of the cutter sheath 2, and the outer diameter of the driving shaft 3 should be slightly smaller than the hole diameter of the electric saw inner sleeve pipe 10.
[0041] Preferably, the blade 25 is a right trapezoidal blade, and the blade 25 is provided with the sawtooth 26 on the inclined edge. It should be noted that the shape of the blade 25 in the embodiment is only a preferred scheme, and the blade 25 can also be designed into other shapes according to requirements, such as a rectangular blade, a triangular blade, a conical blade, etc.
[0042] The working principle of the utility model is as follows: when in use, the power electric saw rod outer sleeve 1 is installed on the power mobile phone, after installation, the character-shaped connecting lug 27 at the end of the connecting shaft 4 is inserted into the groove at the end of the rotating shaft of the power mobile phone in matched mode, the power system host is started, the rotating shaft of the power mobile phone drives the rotation of the connecting shaft 4, the cylindrical cam 5 on the connecting shaft 4 rotates, the track groove 21 on the cylindrical cam 5 cooperates with the roller 19, so that the long strip plate 16 does reciprocating motion in the long strip plate installation groove 20, the long strip plate 16 moves synchronously with the driving shaft 3 through the connecting pipe 17, the driving shaft 3 moves synchronously with the cutter head 6, and the cutter head 6 moves reciprocatingly and cuts the bone through the sawtooth 26 thereon.
[0043] During the operation, the flushing pipe of the flushing equipment is connected to the first liquid inlet hole 28 on the electric saw rod outer sleeve 1, and water flows through the first liquid inlet hole 28, the liquid flow channel 12, the second liquid inlet hole 13, the electric saw inner sleeve pipe 10 and the cutter sheath 2 in sequence, and then flows out from the end of the cutter sheath 2, along the round rod 24 to the blade 25, and cools the bone while cutting.
[0044] The above describes the structure, features and effects of the present application according to the embodiments shown in the drawings, and the above is only the preferred embodiments of the present application, but the present application is not limited to the embodiments shown in the drawings, any changes or modifications made according to the concept of the present application, or equivalent embodiments with equivalent changes, as long as they are within the scope of the present application.
Claims
1. A medical powered bone knife, comprising an electric saw rod outer sleeve (1), characterized in that: One end of the electric saw bar jacket (1) is connected to one end of the electric saw bar assembly, and a tool sheath (2) is installed at the other end of the electric saw bar assembly. A drive shaft (3) is rotatably installed in the electric saw bar assembly, and a cam connecting assembly is provided at one end of the drive shaft (3). A connecting shaft (4) is installed in the electric saw bar jacket (1), and a cylindrical cam (5) is provided on the connecting shaft (4). The cam connecting assembly is connected to the cylindrical cam (5), and a tool head (6) is installed at the other end of the drive shaft (3).
2. The medical powered osteotome according to claim 1, characterized in that: The electric saw rod jacket (1) is a cylindrical structure, and an anti-slip convex ring (7) is provided on the outer wall of the electric saw rod jacket (1). A connecting boss (30) is formed on the outer wall of one end of the electric saw rod jacket (1) away from the electric saw rod assembly, and a connecting groove (8) is provided on the connecting boss (30).
3. The medical powered osteotome according to claim 1, characterized in that: The electric saw rod assembly comprises an electric saw outer sleeve (9), an electric saw inner sleeve (10) and a connector (11); the electric saw outer sleeve (9) is sleeved on the electric saw inner sleeve (10), and the two are fixedly connected; one end of the connector (11) is fixedly connected to one end of the electric saw outer sleeve (9), and the other end of the connector (11) is plugged into and fixedly connected to the electric saw rod outer sleeve (1).
4. The medical powered osteotome according to claim 3, characterized in that: An opening (29) is provided on the wall of the inner sleeve (10) of the electric saw, a second liquid inlet hole (13) is provided on the wall of the end of the outer sleeve (9) of the electric saw connected to the connector (11), a liquid flow channel (12) is formed in the connector (11), a first liquid inlet hole (28) is provided on the outer sleeve (1) of the electric saw rod, the first liquid inlet hole (28) is connected to one end of the liquid flow channel (12), the other end of the liquid flow channel (12) is connected to the second liquid inlet hole (13), and the second liquid inlet hole (13) is connected to the opening (29) on the inner sleeve (10) of the electric saw.
5. The medical powered osteotome according to claim 1, characterized in that: A bearing fixing plate (14) is fixedly provided in the electric saw rod outer sleeve (1), a bearing (15) is fixedly provided on the bearing fixing plate (14), the connecting shaft (4) passes through the bearing (15), and the connecting shaft (4) is interference-fitted with the inner ring surface of the bearing (15).
6. The medical powered osteotome according to claim 3, characterized in that: The cam connection assembly includes a long strip plate (16), a connecting tube (17), a connecting rod (18) and a roller (19), a long strip plate installation groove (20) is formed in the connecting head (11), the cross-sectional shape and size of the long strip plate installation groove (20) are the same as the shape and size of the long strip plate (16), the long strip plate (16) is slidably installed in the long strip plate installation groove (20), the connecting tube (17) and the connecting rod (18) are arranged on both sides of the long strip plate (16), wherein the connecting tube (17) is located at the center of the long strip plate (16), the connecting rod (18) is perpendicular to the long strip plate (16) and is located at one end of the long strip plate (16), the roller (19) is rotatably installed at the end of the long strip plate (16) through a rotating shaft, and the roller (19) is located in the track groove (21) of the cylindrical cam (5).
7. The medical powered osteotome according to claim 6, characterized in that: The drive shaft (3) is plugged into and slidably connected to the inner sleeve (10) of the electric saw, one end of the drive shaft (3) is plugged into and fixed to the connecting pipe (17), and the other end of the drive shaft (3) is formed with a threaded hole (22).
8. The medical powered osteotome according to claim 7, characterized in that: The cutter head (6) comprises a threaded column (23), a round rod (24) and a blade (25), wherein the threaded column (23) is fixed to one end of the round rod (24), and the blade (25) is fixed to the other end of the round rod (24), the threaded column (23) is threadedly connected to the threaded hole (22) on the drive shaft (3), and the round rod (24) is plugged into and slidably connected to the tool sheath (2).
9. The medical powered osteotome according to claim 8, characterized in that: The blade (25) is a right-angled trapezoidal blade, and saw teeth (26) are provided on the oblique edge of the blade (25).