High-rigidity super-long precision shaft for medical equipment

Abstract

The invention discloses a high-rigidity super-long precision shaft for medical equipment, which belongs to the field of precision shafts and comprises a mounting head, a self-lubricating mechanism is mounted on the surface of the mounting head, a connecting mechanism is mounted on one side of the mounting head, and a stress adjusting mechanism is mounted on the surface of the connecting mechanism. The connecting mechanism comprises a mounting seat fixedly connected to one side of the mounting head, and a strong magnetic block is fixedly connected to the interior of the mounting seat; according to the high-rigidity ultra-long precision shaft for the medical instrument, through cooperative use of all the devices, a fixing rod and a connecting sleeve are pulled, so that a connecting piece is separated from a mounting base, and therefore, an independent rotating shaft assembly is replaced; the rigidity of the high-rigidity super-long precision shaft for the medical instrument is improved, part of the position of the high-rigidity super-long precision shaft for the medical instrument can be independently replaced, and waste of the high-rigidity super-long precision shaft for the medical instrument caused by overall replacement is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision shafts, and particularly relates to a high-rigidity super-long precision shaft for medical equipment. BACKGROUND

[0002] Medical equipment refers to instruments, devices, appliances, in-vitro diagnostic reagents and calibrators, materials and other similar or related articles directly or indirectly used for the human body, including the required computer software, medical equipment includes medical devices and medical consumables, the utility is mainly obtained through physical means, not through pharmacology, immunology or metabolic means, or although these means are involved, only play a supporting role.

[0003] The high-rigidity super-long precision shaft for medical equipment is a cylindrical or cylindrical mechanical transmission or support component designed and manufactured to meet the harsh requirements of specific medical equipment, with extremely high bending and torsional deformation resistance (high rigidity), length much greater than diameter (super long), and machining and assembly precision reaching microns or even sub-microns (precision), which is used in various medical devices requiring precision motion, positioning, support or transmission.

[0004] The existing high-rigidity super-long precision shaft for medical equipment generally uses a fixed head, a limiting head and a protective shell during use. The fixed head and the limiting head can limit the protective shell during use, and the protective shell can improve the rigidity of the precision shaft body during use, preventing deformation or breakage of the precision shaft body during use. However, after long-term use of the high-rigidity super-long precision shaft for medical equipment, cracks may exist in the area where the stress is concentrated, which may cause the high-rigidity super-long precision shaft for medical equipment to break during use due to the existence of cracks. Therefore, the high-rigidity super-long precision shaft for medical equipment needs to be replaced as a whole to avoid the possibility of breakage.

[0005] However, the replacement of the high-rigidity super-long precision shaft for medical equipment as a whole may cause the uncracked parts to be replaced synchronously, resulting in waste of the high-rigidity super-long precision shaft for medical equipment and increasing the use cost of the high-rigidity super-long precision shaft for medical equipment.

[0006] Therefore, the present application provides a high-rigidity super-long precision shaft for medical equipment to solve the above problems. SUMMARY

[0007] (I) Technical problems solved

[0008] The present application provides a high-rigidity super-long precision shaft for medical equipment, which aims to solve the problems raised in the background art.

[0009] (II) Technical solutions

[0010] To achieve the above object, the present application provides the following technical scheme: a high-rigidity super-long precision shaft for medical devices, comprising a mounting head, a self-lubricating mechanism is mounted on the surface of the mounting head, a connecting mechanism is mounted on one side of the mounting head, and a stress adjusting mechanism is mounted on the surface of the connecting mechanism;

[0011] The connecting mechanism comprises a mounting seat fixedly connected to one side of the mounting head, a strong magnetic block fixedly connected in the mounting seat, a abutting sleeve fixedly connected in the mounting seat, a connecting piece inserted in the abutting sleeve, a permanent magnet fixedly connected to one end of the connecting piece corresponding to the strong magnetic block, a support sleeve fixedly connected to the other end of the connecting piece, a hollow tube slidingly connected to the surface of the support sleeve, a rotating shaft assembly fixedly connected to one end of the hollow tube, and a mounting sleeve identical to the mounting seat fixedly connected to the rotating shaft assembly.

[0012] As a preferred technical scheme of the present application, the connecting mechanism further comprises a sliding groove opened on the surface of the hollow tube, a fixed rod fixedly connected to the support sleeve and slidingly connected in the sliding groove, two insertion rods fixedly connected to the surface of the fixed rod, and an abutting spring fixedly connected to the fixed rod in the sliding groove.

[0013] As a preferred technical scheme of the present application, the connecting mechanism further comprises an annular groove opened on one side of the hollow tube, pressure sensors fixedly connected in the annular groove in an annular array, connecting rods fixedly connected to the support sleeve and fixedly connected to the surface of the pressure sensors in an annular array, and an insertion groove corresponding to the insertion rod opened on the surface of the hollow tube.

[0014] As a preferred technical scheme of the present application, the stress adjusting mechanism comprises a flow-through groove opened in the support sleeve and the connecting piece, a magnetorheological fluid provided in the flow-through groove, mounting plates fixedly connected to both edges of one side of the mounting head and the rotating shaft assembly, and electromagnetic plates fixedly connected to the surface of the mounting plates in an annular array corresponding to the magnetorheological fluid.

[0015] As a preferred technical scheme of the present application, a friction block fixedly connected to the connecting piece is attached to the surface of the support sleeve in an annular array, a reset spring fixedly connected to the insertion rod and the fixed rod is sleeved on the surface of the insertion rod, and a supplementary pipeline corresponding to the flow-through groove is fixedly connected to the surface of the support sleeve.

[0016] As a preferred technical scheme of the present application, the self-lubricating mechanism comprises a mounting groove opened on the surface of the mounting head, a sliding plate magnetically attracted in the mounting groove, a clamping rod fixedly connected to the surface of the sliding plate, and a solid lubricant sleeved on the surface of the clamping rod corresponding to the sliding plate and the mounting groove.

[0017] As a preferred technical solution of the present application, the two sides of the mounting plate surface are sleeved with protective sleeves corresponding to the support sleeves, the two sides of the protective sleeves are fixedly connected with magnetic attraction blocks, the two magnetic attraction blocks correspond to the mounting head and the shaft assembly respectively, and the protective sleeves are used for protecting the connection between the mounting head and the shaft assembly.

[0018] As a preferred technical solution of the present application, the mounting plate is in sliding connection with the corresponding shaft assembly, the material of the high-rigidity super-long precision shaft component for medical equipment is alloy structural steel, which has high strength, high toughness and good hardenability.

[0019] (Three) beneficial effects

[0020] Based on the cooperation of the plurality of components in the connecting mechanism, the connecting piece and the permanent magnet are inserted into the mounting seat, the permanent magnet is attracted to the strong magnet, and the friction between the connecting piece and the mounting seat is increased through the cooperation of the abutting sleeve and the friction block, so that the connecting piece and the mounting seat are connected more tightly, and the support sleeve and the connecting piece are limited through the cooperation of the fixing rod and the insertion rod. When a crack occurs in a shaft assembly, the connecting piece and the mounting seat are separated by pulling the fixing rod and the connecting sleeve, so that the single shaft assembly can be replaced. This not only improves the rigidity of the high-rigidity super-long precision shaft for medical equipment based on the material of alloy structural steel, but also allows the high-rigidity super-long precision shaft for medical equipment to be replaced individually in some positions, avoiding the waste of the high-rigidity super-long precision shaft for medical equipment caused by overall replacement;

[0021] Based on the cooperation of the connecting sleeve and the magnetorheological fluid, the connecting sleeve connects the connecting piece and the hollow pipe. When there is no external magnetic field, the magnetorheological fluid remains in liquid state, and the overall rigidity of the high-rigidity super-long precision shaft for medical equipment is relatively low compared to when there is an external magnetic field. Therefore, when the high-rigidity super-long precision shaft for medical equipment is used and subjected to stress, it will slightly deform to absorb the stress and reduce the impact of the stress on the high-rigidity super-long precision shaft for medical equipment. When the stress exceeds the threshold set by the pressure sensor, the electromagnetic plate is powered to generate a magnetic field, which controls the magnetorheological fluid to solidify, instantaneously increases the rigidity of the local position of the shaft assembly, disperses the stress, and avoids stress concentration that may cause cracks in the local position of the high-rigidity super-long precision shaft for medical equipment and lead to the fracture of the high-rigidity super-long precision shaft for medical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of a high-rigidity super-long precision shaft for medical equipment.

[0023] Figure 2This is a schematic diagram of the structure of a high-rigidity, ultra-long precision shaft mounting head and a rotating shaft assembly for medical devices;

[0024] Figure 3 This is a structural diagram of a high-rigidity, ultra-long precision shaft mounting head, a rotating shaft assembly, and a connecting mechanism for medical devices;

[0025] Figure 4 This is a schematic diagram of the structure of a connecting mechanism and a protective sleeve in a high-rigidity, ultra-long precision shaft for medical devices;

[0026] Figure 5 This is a schematic diagram of the structure of a stress adjustment mechanism in a high-rigidity, ultra-long precision shaft for medical devices;

[0027] Figure 6 This is a schematic diagram of the structure of a high-rigidity, ultra-long precision shaft support sleeve, hollow tube, and pressure sensor for medical devices;

[0028] Figure 7 This is a structural schematic diagram of a high-rigidity, ultra-long precision shaft mounting head and a self-lubricating mechanism for medical devices.

[0029] In the picture:

[0030] 1. Mounting head; 2. Mounting seat; 3. Strong magnetic block; 4. Tightening sleeve; 5. Connector; 6. Support sleeve; 7. Hollow tube; 8. Rotating shaft assembly; 9. Sliding groove; 10. Fixing rod; 11. Connecting rod; 12. Annular groove; 13. Pressure sensor; 14. Tightening spring; 15. Circulation groove; 16. Mounting plate; 17. Electromagnetic plate; 18. Mounting groove; 19. Sliding plate; 20. Clamping rod; 21. Protective sleeve; 22. Magnetic block; 23. Permanent magnet; 24. Reset spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The present invention provides a high-rigidity ultra-long precision shaft for medical devices, such as Figures 1-7 As shown, the high-rigidity ultra-long precision shaft for medical devices includes a mounting head 1. The material of the high-rigidity ultra-long precision shaft component for medical devices is alloy structural steel, which has high strength, high toughness and good hardenability;

[0033] Based on the setting of alloy structural steel material, the overall rigidity of the high-rigidity ultra-long precision shaft used in medical devices is improved;

[0034] The surface of the mounting head 1 is provided with a self-lubricating mechanism, which comprises a mounting groove 18 opened on the surface of the mounting head 1, a sliding plate 19 magnetically attracted in the mounting groove 18, a clamping rod 20 fixedly connected to the surface of the sliding plate 19, and a solid lubricant corresponding to the sliding plate 19 and the mounting groove 18 sleeved on the surface of the clamping rod 20;

[0035] The sliding plate 19 and the clamping rod 20 are used to fix the solid lubricant;

[0036] The solid lubricant generates heat based on the rotation of the high-rigidity super-long precision shaft for medical devices, so that the solid lubricant melts, so that the lubricant adheres to the mounting head 1, and the mounting head 1 is lubricated;

[0037] One side of the mounting head 1 is provided with a connecting mechanism, which comprises a mounting seat 2 fixedly connected to one side of the mounting head 1, a strong magnetic block 3 fixedly connected in the mounting seat 2, a abutting sleeve 4 fixedly connected in the mounting seat 2, a connecting piece 5 inserted in the abutting sleeve 4, a permanent magnet 23 fixedly connected to one end of the connecting piece 5 corresponding to the strong magnetic block 3, and a supporting sleeve 6 fixedly connected to the other end of the connecting piece 5;

[0038] The strong magnetic block 3 and the permanent magnet 23 are magnetically attracted to each other, and are used to connect the connecting piece 5 and the mounting seat 2;

[0039] The supporting sleeve 6 is connected to the mounting seat 2 based on the connecting piece 5;

[0040] The material of the abutting sleeve 4 is elastic, and based on the elastic setting, the surface of the abutting sleeve 4 is tightly attached to the surface of the connecting piece 5, further improving the tightness of the installation of the connecting piece 5 and the mounting seat 2;

[0041] The surface of the supporting sleeve 6 is fixedly connected with a supplement pipeline corresponding to the flow-through groove 15, the surface of the supporting sleeve 6 is annularly arrayed with a friction block fixedly connected with the connecting piece 5, the surface of the supporting sleeve 6 is slidingly connected with a hollow tube 7, one end of the hollow tube 7 is fixedly connected with a rotating shaft assembly 8, and the rotating shaft assembly 8 is fixedly connected with an installation sleeve same as the mounting seat 2;

[0042] The supplement pipeline is used to supplement and replace the magnetorheological fluid;

[0043] The friction block is used to increase the friction force between the abutting sleeve 4 and the connecting piece 5;

[0044] The hollow tube 7 is used to accommodate and support the supporting sleeve 6;

[0045] The rotating shaft assembly 8 and the mounting head 1 form the outer shape of the high-rigidity super-long precision shaft for medical devices.

[0046] The connecting mechanism further comprises a sliding groove 9 formed on the surface of the hollow pipe 7, the inside of the sliding groove 9 is slidably connected with a fixed rod 10 fixedly connected with the supporting sleeve 6, both sides of the surface of the fixed rod 10 are fixedly connected with a plug-in rod 11, the surface of the plug-in rod 11 is sleeved with a reset spring 24 fixedly connected with the plug-in rod 11 and the fixed rod 10 at both ends, and the inside of the sliding groove 9 is fixedly connected with a pressing spring 14 fixedly connected with the fixed rod 10;

[0047] The sliding groove 9 is used for guiding the fixed rod 10;

[0048] The fixed rod 10 and the plug-in rod 11 are used for limiting the supporting sleeve 6;

[0049] The reset spring 24 is used for resetting the plug-in rod 11;

[0050] The pressing spring 14 is used for resetting the fixed rod 10;

[0051] The connecting mechanism further comprises an annular groove 12 formed on one side of the hollow pipe 7, the inside of the annular groove 12 is fixedly connected with a pressure sensor 13 in an annular array, the surface of the pressure sensor 13 is fixedly connected with a connecting rod fixedly connected with the supporting sleeve 6 in an annular array, and the surface of the hollow pipe 7 is provided with a plug-in groove corresponding to the plug-in rod 11;

[0052] The annular groove 12 and the pressure sensor 13 cooperate with each other, when stress is concentrated on the supporting sleeve 6, the supporting sleeve 6 deforms to a certain extent, so that the supporting sleeve 6 and the connecting rod drive the pressure sensor 13 and the inner wall of the annular groove 12 to abut tightly, thereby detecting the pressure borne by the supporting sleeve 6 based on the pressure sensor 13;

[0053] The plug-in groove is used for limiting the plug-in rod 11;

[0054] The surface of the connecting mechanism is provided with a stress adjusting mechanism, the stress adjusting mechanism comprises a flow-through groove 15 formed in the inside of the supporting sleeve 6 and the connecting piece 5, the inside of the flow-through groove 15 is provided with a magneto-rheological fluid, both edges of one side of the mounting head 1 and the shaft assembly 8 are fixedly connected with a mounting plate 16, the mounting plate 16 is slidably connected with the corresponding shaft assembly 8, and the surface of the mounting plate 16 is fixedly connected with an electromagnetic plate 17 corresponding to the magneto-rheological fluid in an annular array;

[0055] The flow-through groove 15 is used for storing the magneto-rheological fluid;

[0056] The magneto-rheological fluid is used for improving the rigidity of the supporting sleeve 6 and the connecting piece 5;

[0057] The mounting plate 16 is used for mounting the electromagnetic plate 17;

[0058] The electromagnetic plate 17 is used for forming a magnetic field outside the supporting sleeve 6 to control the magneto-rheological fluid.

[0059] The mounting plate 16 is sleeved with a protective sleeve 21 corresponding to the supporting sleeve 6 on both sides, and the protective sleeve 21 is fixedly connected with a magnetic block 22 on both sides. The two magnetic blocks 22 correspond to the mounting head 1 and the shaft assembly 8 respectively, and the protective sleeve 21 is used for protecting the connection between the mounting head 1 and the shaft assembly 8.

[0060] The protective sleeve 21 is used for protecting the connecting piece 5 and the supporting sleeve 6.

[0061] The magnetic block 22 is used for being adsorbed on the surface of the mounting head 1 and the corresponding shaft assembly 8 to install the protective sleeve 21.

[0062] Specifically, when the high-rigidity super-long precision shaft for medical instruments is used, the connecting piece 5 is inserted into the inside of the mounting seat 2, so that the strong magnetic block 3 is attached to the permanent magnet 23, thereby adsorbing the two and limiting the connecting piece 5 and the mounting seat 2 to complete the connection of the connecting piece 5 and the mounting seat 2. Through the fixed connection of the supporting sleeve 6 and the connecting piece 5 and the limiting of the supporting sleeve 6 by the insertion rod 11, the supporting sleeve 6, the hollow tube 7 and the shaft assembly 8 are connected with the mounting seat 2. Based on the splicing of the plurality of shaft assemblies 8 and the two mounting heads 1, the high-rigidity super-long precision shaft for medical instruments is obtained.

[0063] When the pressure detected by the pressure sensor 13 does not exceed the threshold value, no magnetic field is generated outside the supporting sleeve 6, the magneto-rheological fluid remains in a liquid state, and the overall rigidity of the high-rigidity super-long precision shaft for medical instruments is relatively low when a magnetic field exists outside. Therefore, when the high-rigidity super-long precision shaft for medical instruments is used, a slight deformation occurs when a certain stress is applied, the stress is absorbed, and the influence of the stress on the high-rigidity super-long precision shaft for medical instruments is reduced.

[0064] When the pressure exceeds the threshold value, the electromagnetic plate 17 is powered to generate a magnetic field to control the magneto-rheological fluid, so that the magneto-rheological fluid solidifies, the rigidity of the local position of the shaft assembly 8 instantaneously increases, the stress is dispersed, and stress concentration is avoided to prevent cracks in part of the high-rigidity super-long precision shaft for medical instruments and breakage of the high-rigidity super-long precision shaft for medical instruments.

[0065] When the high-rigidity super-long precision shaft part of the medical instrument has a crack, the plug-in rod 11 is lifted to be separated from the plug-in groove, the fixed rod 10 is no longer limited, the fixed rod 10 is pulled to drive the supporting sleeve 6 to be accommodated in the hollow tube 7, so that the supporting sleeve 6 drives the connecting piece 5 and the permanent magnet 23 to be separated from the mounting seat 2, the part with the crack is disassembled, the high-rigidity super-long precision shaft part of the medical instrument is replaced, and the waste of the high-rigidity super-long precision shaft part of the medical instrument is avoided.

[0066] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-rigidity, ultra-long precision shaft for medical equipment, characterized by: It comprises a mounting head (1), a self-lubricating mechanism being mounted on the surface of the mounting head (1), a connecting mechanism being mounted on one side of the mounting head (1), and a stress regulating mechanism being mounted on the surface of the connecting mechanism; The connecting mechanism comprises a mounting seat (2) fixedly connected to one side of the mounting head (1); a strong magnetic block (3) is fixedly connected to the interior of the mounting seat (2); a pressing sleeve (4) is fixedly connected to the interior of the mounting seat (2); a connecting piece (5) is inserted into the interior of the pressing sleeve (4); one end of the connecting piece (5) is fixedly connected to a permanent magnet (23) corresponding to the strong magnetic block (3); the other end of the connecting piece (5) is fixedly connected to a supporting sleeve (6); the surface of the supporting sleeve (6) is slidably connected to a hollow tube (7); one end of the hollow tube (7) is fixedly connected to a rotating shaft assembly (8); and the rotating shaft assembly (8) is fixedly connected to a mounting sleeve identical to the mounting seat (2).

2. The high-rigidity, ultra-long precision shaft for medical devices according to claim 1, characterized in that: The connecting mechanism further comprises a sliding groove (9) provided on the surface of the hollow tube (7); a fixing rod (10) fixedly connected to the support sleeve (6) is slidably connected inside the sliding groove (9); plug-in rods (11) are fixedly connected to both sides of the surface of the fixing rod (10); and a pressing spring (14) fixedly connected to the fixing rod (10) is fixedly connected inside the sliding groove (9).

3. The high-rigidity, ultra-long precision shaft for medical devices according to claim 2, characterized in that: The connecting mechanism further comprises an annular groove (12) provided on one side of the hollow tube (7); a pressure sensor (13) is fixedly connected to the inside of the annular groove (12) in an annular array; a connecting rod fixedly connected to the support sleeve (6) is fixedly connected to the surface of the pressure sensor (13) in an annular array; and a plug-in groove corresponding to the plug-in rod (11) is provided on the surface of the hollow tube (7).

4. The high-rigidity, ultra-long precision shaft for medical devices according to claim 2, characterized in that: The stress adjustment mechanism comprises a flow groove (15) opened inside the support sleeve (6) and the connecting member (5), and magnetorheological fluid is arranged inside the flow groove (15).

5. The high-rigidity, ultra-long precision shaft for medical devices according to claim 4, characterized in that: The mounting head (1) and the two edges of one side of the rotating shaft assembly (8) are fixedly connected with mounting plates (16), and the surface of the mounting plate (16) is fixedly connected with electromagnetic plates (17) corresponding to the magnetorheological fluid in a circular array.

6. The high-rigidity, ultra-long precision shaft for medical equipment according to claim 4, characterized in that: The surface of the support sleeve (6) is fitted with friction blocks fixedly connected to the connecting piece (5) in an annular array, and the surface of the plug rod (11) is sleeved with a return spring (24) with two ends respectively fixedly connected to the plug rod (11) and the fixed rod (10).

7. The high-rigidity, ultra-long precision shaft for medical devices according to claim 1, characterized in that: The self-lubricating mechanism comprises a mounting groove (18) provided on the surface of the mounting head (1); a sliding plate (19) is magnetically attracted inside the mounting groove (18); a clamping rod (20) is fixedly connected to the surface of the sliding plate (19); and a solid lubricant corresponding to the sliding plate (19) and the mounting groove (18) is sleeved on the surface of the clamping rod (20).

8. The high-rigidity, ultra-long precision shaft for medical equipment according to claim 5, characterized in that: Both sides of the surface of the mounting plate (16) are sleeved with protective sleeves (21) corresponding to the support sleeve (6), and the surface of the support sleeve (6) is fixedly connected with a supplementary pipeline corresponding to the circulation groove (15).

9. The high-rigidity, ultra-long precision shaft for medical equipment according to claim 7, characterized in that: Magnetic blocks (22) are fixedly connected to both sides of the protective sleeve (21), and the two magnetic blocks (22) correspond to the mounting head (1) and the rotating shaft assembly (8) respectively. The protective sleeve (21) is used to protect the connection between the mounting head (1) and the rotating shaft assembly (8).

10. The high-rigidity ultra-long precision shaft for medical equipment according to claim 5, characterized in that: The mounting plate (16) is slidably connected to the corresponding rotating shaft assembly (8). The high-rigidity ultra-long precision shaft component used in the medical device is made of alloy structural steel with high strength, high toughness and good hardenability.

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