CN221750745U

CN221750745U - Nail extractor

Info

Publication number: CN221750745U
Application number: CN202323177471.3U
Authority: CN
Inventors: 李觅; 王岩松
Original assignee: Harbin Medical University
Current assignee: Harbin Medical University
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-09-24
Anticipated expiration: 2033-11-24

Abstract

The utility model relates to the field of bone surgery nail taking, in particular to a nail taking device, which has the technical scheme that: the novel rotary type rotary frame comprises a fixing frame and a driving motor, wherein a fixing outer frame is arranged in the fixing frame, a fixing inner frame is arranged in the fixing outer frame, a through hole is formed in the center of the fixing inner frame, and a rotary assembly is arranged at the rear ends of the fixing outer frame and the fixing inner frame, and the novel rotary type rotary frame has the beneficial effects that: if the steel nail is located the front top of arm or leg portion, micro motor can drive sleeve, connecting screw rod and get the pin fin and take out the steel nail and take off, if need take off the steel nail of patient's arm or shank side, driving motor can drive driving gear and rotatory fluted disc through the pivot and rotate, when rotatory fluted disc takes place rotatory, will be synchronous through the drive of locating connecting rod get the nail subassembly and rotate, make to get the nail subassembly left or right rotatory slope and align with the steel nail of patient's arm or shank side, the steel nail of patient's arm or shank side is taken off to the reuse is got the nail subassembly at last can.

Description

Nail extractor

Technical Field

The utility model relates to the field of nail taking in orthopedic surgery, in particular to a nail taking device.

Background

When orthopedics doctor treats the condition of patient's arm or shank fracture, probably can throw into the steel nail at the position of fracture, the steel nail mainly used is fixed the bone piece to resume better, and after the treatment reaches a period, still need take out the steel nail, the in-process of taking out can all select to use the nail extractor to take off the steel nail mostly.

However, when driving in steel nails, some steel nails can be driven in from the front of the arm or leg, and some steel nails can be driven in from the side of the arm or leg, when taking nails in the prior art, the clamping device is used for clamping and fixing the parts of a patient needing to take nails, and then the nail taking device is used for taking out the steel nails in bones, however, when the upper part of the front of the arm or leg of the patient and the side of the arm or leg need to take nails, the clamped and fixed parts cannot be used for effectively taking nails, at the moment, the clamping device is required to be loosened, and then the positions of limbs or the nail taking device are adjusted, so that the nail taking device is inconvenient to use.

Therefore, it is necessary to invent a staple remover.

Disclosure of utility model

The present utility model is directed to solving the problems set forth in the background art.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a nail extractor, includes mount and driving motor, driving motor installs in the mount upper end, mount internally mounted has fixed frame, fixed frame internally mounted has fixed inside casing, the through-hole has been seted up at fixed inside casing center, fixed frame is provided with rotating assembly with the rear end of fixed inside casing, rotating assembly's one end is connected with gets the nail subassembly, it is positive with fixed inside casing to get the nail subassembly to be located fixed frame, rotating assembly upper end meshing is connected with the driving gear, the driving gear rotates with driving motor's output and is connected.

Based on the above characteristics: the fixing frame can be placed on a table top or a patient bed, when steel nails on arms or legs of a patient are required to be taken down, the arms or legs of the patient can be inserted into the through holes, parts needing to be taken out of the steel nails are aligned with the nail taking assembly, because the steel nails are different in drilling-in positions during operation, some steel nails are located on the front sides of the arms or legs of the patient, some steel nails are located on the side edges of the arms or legs of the patient, when the steel nails on the front sides of the arms or legs of the patient are required to be taken down, the heights of the nail taking assembly can be adjusted in advance, the steel nails are required to be taken down by the nail taking assembly, and when the steel nails on the side edges of the arms or legs of the patient are required to be taken down, the driving motor can drive the driving gear to rotate through the rotating shaft, and the driving gear can drive the rotating assembly to rotate.

Preferably, the outer wall of the fixed outer frame is fixedly provided with a fixed column, and a limit groove is formed between the fixed outer frame and the fixed inner frame.

Based on the above characteristics: the fixed outer frame is fixedly arranged in the fixed frame through the fixed column, and the provided limiting groove is convenient for the rotating assembly to rotate at the rear end of the fixed outer frame and the rear end of the fixed inner frame, so that the fixed outer frame and the nail taking assembly on the front face of the fixed inner frame can be synchronously driven to rotate and incline.

Preferably, the inner wall of the through hole is provided with a positioning groove, an electric telescopic rod is arranged in the positioning groove, and the movable end of the electric telescopic rod is connected with a rubber plate.

Based on the above characteristics: the electric telescopic rod can drive the rubber plate to stretch out and draw back and adjust, so that the arm or leg of a patient can be clamped and fixed conveniently, and the arm or leg is prevented from moving in the process of taking nails.

Preferably, the rotating assembly comprises a rotating fluted disc, a central hole is formed in the center of the rotating fluted disc, a positioning connecting rod is fixedly arranged on the front surface of the rotating fluted disc, and two sides of the rotating fluted disc are connected with the anti-falling assembly in a meshed mode.

Based on the above characteristics: when the rotary fluted disc rotates, the nail taking assembly can be synchronously driven to rotate through the positioning connecting rod.

Preferably, the central hole is the same as the through hole diameter.

Based on the above characteristics: when the arm or the leg of the patient passes through the through hole, the arm or the leg of the patient also passes through the rotary fluted disc synchronously through the central hole, and the rotary fluted disc can rotate without being influenced.

Preferably, the anti-drop assembly comprises an auxiliary gear and a connecting shaft arranged in the middle of the auxiliary gear, wherein a bearing is arranged at one end, far away from the auxiliary gear, of the connecting shaft, and the bearing is arranged at the side edge of the fixing frame.

Based on the above characteristics: when the rotary fluted disc is driven to rotate, the rotary fluted disc can synchronously drive the auxiliary gear to rotate in situ, and when the rotary fluted disc is not driven to rotate, the auxiliary gear can be limited and fixed on two sides of the rotary fluted disc, so that the situation that the rotary fluted disc moves downwards and falls off is prevented.

Preferably, the nail taking assembly comprises a mounting plate and a micro motor arranged at the upper end of the mounting plate, a sleeve is arranged at the output end of the micro motor, the sleeve is positioned at the lower end of the mounting plate, a connecting screw is connected with the lower end of the sleeve in a threaded manner, and a nail taking head is arranged at the bottom of the connecting screw.

Based on the above characteristics: when the nail head is connected with the end part of the steel nail, the miniature motor can drive the sleeve, the connecting screw rod and the nail head to rotate so as to take down the steel nail.

The beneficial effects of the utility model are as follows:

1. The arm or leg part that needs to get the nail with the patient inserts inside the through-hole, if the steel nail is located the positive top of arm or leg part, micro motor can drive sleeve, connecting screw and get the pin fin take place to rotate take off the steel nail, if need take off the steel nail of patient's arm or shank side, driving motor can drive the driving gear rotation through the pivot, driving gear will drive its synchronous revolution with rotatory fluted disc meshing this moment, when rotatory fluted disc takes place to rotate, will be synchronous through the drive of location connecting rod get the nail subassembly and rotate, make to get the nail subassembly left or right rotatory slope and align with the steel nail of patient's arm or shank side, at last reuse get the nail subassembly with the steel nail of patient's arm or shank side take off can, need not to remove whole device, also need not adjust the position of patient's arm or shank, it is simple convenient.

2. When the arm or leg of a patient is inserted into the inner side of the through hole, the electric telescopic rod can drive the rubber plate to stretch and retract to adjust according to the thickness of the arm or leg, so that the arm or leg of the patient can be clamped and fixed conveniently, and the arm or leg is prevented from moving in the process of taking nails.

3. When the rotary fluted disc is driven to rotate, the rotary fluted disc can synchronously drive the auxiliary gear to rotate in situ, and when the rotary fluted disc is not driven to rotate, the auxiliary gear can be limited and fixed on two sides of the rotary fluted disc, so that the situation that the rotary fluted disc moves downwards and falls off is prevented.

Drawings

FIG. 1 is a schematic view of the overall structure of a nail extractor according to the present utility model;

FIG. 2 is a schematic view of the structure of a fixing outer frame and a fixing inner frame of the nail extractor;

FIG. 3 is a view showing a state of connection between a nail extractor rotating assembly and a nail extractor assembly;

FIG. 4 is a view showing a state before rotation of a staple remover staple removing assembly according to the present utility model;

Fig. 5 is a state diagram of the nail extractor after the nail extractor assembly is rotated.

In the figure: 1. a fixing frame; 2. a driving motor; 3. fixing the outer frame; 31. fixing the column; 32. a limit groove; 4. fixing the inner frame; 5. a through hole; 51. a positioning groove; 52. an electric telescopic rod; 53. a rubber plate; 6. a rotating assembly; 61. rotating the fluted disc; 62. a central bore; 63. positioning a connecting rod; 64. an anti-drop assembly; 641. an auxiliary gear; 642. a connecting shaft; 643. a bearing; 7. a staple taking assembly; 71. a mounting plate; 72. a micro motor; 73. a sleeve; 74. a connecting screw; 75. taking a nail head; 8. a driving gear.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1-5, the nail extractor provided by the utility model comprises a fixing frame 1 and a driving motor 2, wherein the driving motor 2 is arranged at the upper end of the fixing frame 1, a fixed outer frame 3 is arranged in the fixing frame 1, a fixed inner frame 4 is arranged in the fixed outer frame 3, a through hole 5 is formed in the center of the fixed inner frame 4, a rotating assembly 6 is arranged at the rear ends of the fixed outer frame 3 and the fixed inner frame 4, one end of the rotating assembly 6 is connected with a nail extracting assembly 7, the nail extracting assembly 7 is positioned at the front surfaces of the fixed outer frame 3 and the fixed inner frame 4, a driving gear 8 is connected at the upper end of the rotating assembly 6 in a meshed manner, and the driving gear 8 is in rotary connection with the output end of the driving motor 2.

The fixing frame 1 can be placed on a table top or a patient bed, when steel nails on arms or legs of a patient are required to be taken down, the arms or legs of the patient can be inserted into the through holes 5, parts needing to be taken out of the steel nails are aligned with the nail taking assembly 7, because the steel nails are different in drilling-in positions during surgery, some steel nails are positioned on the front sides of the arms or legs of the patient, some steel nails are positioned on the side edges of the arms or legs of the patient, when the steel nails on the front sides of the arms or legs of the patient are required to be taken down, the height of the nail taking assembly 7 can be adjusted in advance, the steel nails are required to be taken down by the nail taking assembly 7, when the steel nails on the side edges of the arms or legs of the patient are required to be taken down, the driving motor 2 can drive the driving gear 8 to rotate through the rotating shaft, and the driving gear 8 can drive the rotating assembly 6 to rotate at the moment, the nail taking assembly 7 can be synchronously driven to rotate, the nail taking assembly 7 is enabled to be inclined to be aligned with the steel nails on the side edges of the arms or legs of the patient to the left or the right, finally, the nail taking assembly 7 is not required to be taken down, the whole device is not required to be moved, and the position of the arms or legs of the patient is not required to be adjusted simply or conveniently.

Further, the outer wall of the fixed outer frame 3 is fixedly provided with a fixed column 31, and a limit groove 32 is formed between the fixed outer frame 3 and the fixed inner frame 4.

The fixed outer frame 3 is fixedly arranged in the fixed frame 1 through the fixed column 31, and the opened limit groove 32 facilitates the rotation of the rotating assembly 6 when the fixed outer frame 3 and the rear end of the fixed inner frame 4 rotate, so that the fixed outer frame 3 and the front nail taking assembly 7 of the fixed inner frame 4 can be synchronously driven to rotate and incline.

Further, a positioning groove 51 is formed in the inner wall of the through hole 5, an electric telescopic rod 52 is installed in the positioning groove 51, and a rubber plate 53 is connected to the movable end of the electric telescopic rod 52.

When the arm or the leg of a patient is inserted into the inner side of the through hole 5, the electric telescopic rod 52 can drive the rubber plate 53 to stretch and retract according to the thickness of the arm or the leg, so that the arm or the leg of the patient can be clamped and fixed conveniently, the arm or the leg is prevented from moving in the process of taking nails, and the arranged rubber plate 53 has a good anti-abrasion buffer effect, and damage to the arm or the leg of the patient in the process of clamping is avoided.

Further, the rotating assembly 6 comprises a rotating fluted disc 61, a central hole 62 is formed in the center of the rotating fluted disc 61, a positioning connecting rod 63 is fixedly arranged on the front surface of the rotating fluted disc 61, and two sides of the rotating fluted disc 61 are connected with an anti-falling assembly 64 in a meshed manner.

The side interval of rotatory fluted disc 61 installs a plurality of dogteeth, when driving gear 8 is driven corotation or reverse rotation and adjusts, can drive rotatory fluted disc 61 simultaneously and rotate left or right, rotatory positive location connecting rod 63 of fluted disc 61 runs through with get nail subassembly 7 through spacing groove 32 and is connected fixedly, because spacing messenger driving gear 8 of spacing groove 32 and get nail subassembly 7 can not the back-and-forth movement and adjust, when rotatory fluted disc 61 takes place rotatory, can drive through location connecting rod 63 and get nail subassembly 7 and take place the rotation simultaneously.

Further, the center hole 62 has the same aperture as the through hole 5.

When the arm or leg of the patient passes through the through hole 5, the arm or leg of the patient passes through the rotary fluted disc 61 through the central hole 62 synchronously, and the rotary fluted disc 61 can be rotated without being influenced.

Further, the anti-drop assembly 64 includes an auxiliary gear 641 and a connecting shaft 642 installed in the middle of the auxiliary gear 641, a bearing 643 is installed at one end of the connecting shaft 642 far away from the auxiliary gear 641, and the bearing 643 is installed at the side of the fixing frame 1.

The connecting shaft 642 in the middle of the auxiliary gear 641 is fixedly connected with the bearing 643 at the side edge of the fixing frame 1, the auxiliary gear 641 is in meshed connection with the two sides of the rotary fluted disc 61, when the rotary fluted disc 61 is driven to rotate, the rotary fluted disc 61 can synchronously drive the auxiliary gear 641 to rotate in situ, and when the rotary fluted disc 61 is not driven to rotate, the auxiliary gear 641 can be limited and fixed at the two sides of the rotary fluted disc 61, so that the rotary fluted disc 61 is prevented from falling down.

Further, the nail taking assembly 7 comprises a mounting plate 71 and a micro motor 72 arranged at the upper end of the mounting plate 71, a sleeve 73 is arranged at the output end of the micro motor 72, the sleeve 73 is positioned at the lower end of the mounting plate 71, a connecting screw 74 is connected with the lower end of the sleeve 73 in a threaded manner, and a nail taking head 75 is arranged at the bottom of the connecting screw 74.

One end of the positioning connecting rod 63, which is far away from the rotary fluted disc 61, is fixedly connected with the mounting plate 71, a hole is formed in the middle of the mounting plate 71, a driving shaft at the output end of the micro motor 72 penetrates through the hole to be connected and fixed with the upper end of the sleeve 73, the sleeve 73 is of a cylindrical structure with the upper end sealed and the lower end open, internal threads are formed in the sleeve 73, the connecting screw 74 is conveniently inserted into the sleeve 73 from the bottom and is in threaded connection with the sleeve 73, the height of the screw head 75 can be conveniently adjusted according to the position of a steel nail, meanwhile, the screw head 75 is conveniently and movably detached to be conveniently replaced, and when the screw head 75 is connected with the end of the steel nail, the micro motor 72 can drive the sleeve 73, the connecting screw 74 and the screw head 75 to rotate to take down the steel nail.

The application process of the utility model is as follows: the fixing frame 1 can be placed on a table top or a patient bed, then an arm or a leg part of a patient needing to be nailed is inserted into the through hole 5, when the part needing to be nailed is aligned with the nail taking component 7, the electric telescopic rod 52 can drive the rubber plate 53 to stretch and move to clamp and fix the arm or the leg part of the patient, if the steel nail is positioned above the front side of the arm or the leg part, the connecting screw 74 can be rotated to adjust the height of the nail taking head 75 to be connected with the steel nail, then the micro motor 72 can drive the sleeve 73, the connecting screw 74 and the nail taking head 75 to rotate to take down the steel nail, if the steel nail on the side edge of the arm or the leg part of the patient needs to be taken down, the driving motor 2 can drive the driving gear 8 to rotate through the rotating shaft, at the moment, the driving gear 8 is meshed with the rotating fluted disc 61 to drive the steel nail to rotate synchronously, and because one end of the positioning connecting rod 63 far away from the rotating fluted disc 61 is fixedly connected with the mounting plate 71, when the rotating fluted disc 61 rotates, the positioning connecting rod 63 drives the nail taking component 7 to rotate to tilt leftwards or rightwards to align the steel nail taking component 7 with the steel nail on the side edge of the arm or the leg part of the patient, and finally the steel nail on the side edge of the arm or the leg part 7 can be taken down.

The above description is of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model with the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims

1. The utility model provides a nail extractor, includes mount (1) and driving motor (2), driving motor (2) are installed in mount (1) upper end, its characterized in that: fixed frame (3) are installed to mount (1) internally mounted, fixed frame (3) internally mounted has fixed inside casing (4), through-hole (5) have been seted up at fixed inside casing (4) center, the rear end of fixed frame (3) and fixed inside casing (4) is provided with rotating assembly (6), the one end of rotating assembly (6) is connected with and gets nail subassembly (7), it is positive with fixed inside casing (4) to get nail subassembly (7) to be located fixed frame (3), rotating assembly (6) upper end meshing is connected with driving gear (8), driving gear (8) are connected with driving motor (2) output rotation.

2. A staple remover according to claim 1, wherein: the outer wall of the fixed outer frame (3) is fixedly provided with a fixed column (31), and a limit groove (32) is formed between the fixed outer frame (3) and the fixed inner frame (4).

3. A staple remover according to claim 1, wherein: the inner wall of the through hole (5) is provided with a positioning groove (51), an electric telescopic rod (52) is arranged in the positioning groove (51), and the movable end of the electric telescopic rod (52) is connected with a rubber plate (53).

4. A staple remover according to claim 1, wherein: the rotary assembly (6) comprises a rotary fluted disc (61), a central hole (62) is formed in the center of the rotary fluted disc (61), a positioning connecting rod (63) is fixedly arranged on the front surface of the rotary fluted disc (61), and anti-falling assemblies (64) are connected to the two sides of the rotary fluted disc (61) in a meshed mode.

5. The staple remover of claim 4, wherein: the central hole (62) and the through hole (5) have the same aperture.

6. The staple remover of claim 4, wherein: the anti-drop assembly (64) comprises an auxiliary gear (641) and a connecting shaft (642) arranged in the middle of the auxiliary gear (641), wherein a bearing (643) is arranged at one end, far away from the auxiliary gear (641), of the connecting shaft (642), and the bearing (643) is arranged at the side edge of the fixing frame (1).

7. A staple remover according to claim 1, wherein: the nail taking assembly (7) comprises a mounting plate (71) and a micro motor (72) mounted at the upper end of the mounting plate (71), a sleeve (73) is mounted at the output end of the micro motor (72), the sleeve (73) is located at the lower end of the mounting plate (71), a connecting screw (74) is connected with the lower end of the sleeve (73) in a threaded mode, and a nail taking head (75) is mounted at the bottom of the connecting screw (74).