CN221013832U

CN221013832U - Adjustable forearm rotary drafting device

Info

Publication number: CN221013832U
Application number: CN202322651466.5U
Authority: CN
Inventors: 陈跃伟; 李盛村; 陆俊宏
Original assignee: Wenzhou Medical University
Current assignee: Wenzhou Medical University
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-28
Anticipated expiration: 2033-09-28

Abstract

The utility model discloses an adjustable forearm rotary drafting device which comprises a big arm fixing ring, wherein one side, far away from an opening, of the big arm fixing ring is provided with a mounting seat, the mounting seat is transversely fixed with a connecting rod, one end, far away from the big arm fixing ring, of the connecting rod is transversely provided with an adjusting rod, fastening bolts for fixing are arranged between the adjusting rod and the connecting rod, fastening bolts for fixing are arranged between the connecting rod and the mounting seat, one end, far away from the big arm fixing ring, of the adjusting rod is provided with a right-angle connecting seat, one side, far away from the adjusting rod, of the right-angle connecting seat is provided with an arc-shaped rack, the arc-shaped rack is provided with an arc-shaped through groove, the lower part of the arc-shaped rack is provided with a hand fixing plate, and the hand fixing plate is provided with a hand fixing plate. According to the utility model, through the arranged adjusting assembly, the steering of the hand can be synchronously adjusted by using the steering of the adjusting knob, and the worm is used for driving the worm wheel to drive the torque to be large, so that the automatic fixing can be realized after the adjustment, the use is simple and convenient, and the drafting effect is more.

Description

Adjustable forearm rotary drafting device

Technical Field

The utility model relates to the technical field of clinical rehabilitation engineering, in particular to an adjustable forearm rotary drafting device.

Background

The realization of forearm rotation requires joint participation of the upper ulnar joint and the lower ulnar joint. When the head is screwed, the spin of the radius head is screwed from the radial side to the ulnar side, and the lower end of the radius head is screwed to the ulnar side by taking the ulnar head as the axis, and the palm direction comprises the rotation head and the rotation back. Supination is opposite, with the palm facing outward. The front and back rotation is the main function of the forearm, and has the significance of enabling the wrist to complete rotation, enabling the hands to be more coordinated, having more functions and playing an important role in daily life and production work.

Clinically, the forearm is fixed for a long time due to various reasons such as forearm fracture, so that the phenomena such as joint stiffness, soft tissue contracture and the like are generated. After removal of the fixation, forearm rotation is significantly limited.

The stretching technique is to stretch the soft tissue of contracture or contracture by external force, make the motion slightly exceeding the resistance of the soft tissue in the joint movement range, recover the extensibility of the soft tissue around the joint, reduce the muscular tension and improve the joint movement range. The stretching technique is one of the common techniques and methods for clinically treating various soft tissue contractures or contractures resulting in joint function. Including passive draft and active draft, wherein passive draft includes manual draft, mechanical draft and self draft. The utility model belongs to the category of mechanical drafting.

Mechanical stretching is usually used for continuously giving small-strength external force by mechanical devices such as weight stretching, pulley systems and splints in clinic in view of the limitations of strength and time of manual stretching, so as to act on shortened soft tissues for a long time and improve curative effect. Draft for at least 20 minutes, even hours, the strength of draft varies depending on the patient.

At present, the existing forearm rotary drafting device has the defects of incapability of switching the forearm to use by fixing left and right hands, incapability of adjusting the length or difficulty in adjusting, complex structure or high price of the device, poor drafting effect and the like, and therefore, the adjustable forearm rotary drafting device is provided.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides an adjustable forearm rotary drafting device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a forearm rotation drafting arrangement with adjustable, includes the big arm solid fixed ring, big arm solid fixed ring is kept away from its opening one side and is equipped with the mount pad, the mount pad transversely is fixed with the connecting rod, big arm solid fixed ring one end is kept away from to the connecting rod transversely is equipped with the regulation pole, all be equipped with the fastening bolt who is used for fixing between regulation pole and the connecting rod, all be equipped with the fastening bolt who is used for fixing between connecting rod and the mount pad, it is equipped with right angle connecting seat to keep away from big arm solid fixed ring one end to adjust the pole, right angle connecting seat is kept away from regulation pole one side and is equipped with the arc rack, the arc is worn the groove has been seted up to the arc, arc rack lower part is equipped with the hand fixed plate, the arc is worn the groove and is transversely symmetrically slidingly inserted and is equipped with the slide bar, the equal symmetry cover in slide bar outer peripheral face is equipped with the baffle ring, the baffle ring all slides with arc rack both sides and offsets, the slide bar is close to regulation pole one end all vertically is equipped with the dead lever, dead lever all with right angle connecting seat fixed connection, right angle connecting seat one side is equipped with the regulation subassembly that is used for controlling arc rack pivoted.

Preferably, the adjusting component comprises a gear meshed with the tooth surface inside the arc-shaped rack, a rotating rod is transversely inserted into the gear, the rotating rod rotates to penetrate through the right-angle connecting seat, a worm wheel is sleeved at one end of the rotating rod away from the gear, a worm is transversely meshed with the bottom of the worm wheel, the worm rotates to penetrate through the right-angle connecting seat, and a knob is coaxially arranged at one end of the worm, away from the worm wheel.

The technical scheme is as follows: the worm is utilized to drive the worm wheel to rotate, so that the gear is driven, the gear drives the arc-shaped rack to rotate, and then the hand fixing plate is driven to synchronously rotate, and the hand is synchronously rotated and adjusted.

Preferably, a waist-shaped hole is transversely formed in the intersection position of the adjusting rod and the connecting rod, and the fastening bolt penetrates through the waist-shaped hole in a sliding mode.

The technical scheme is as follows: the waist-shaped holes are used for conveniently adjusting the fixed positions of the adjusting rods, and patients with different arm lengths can be matched for use.

Furthermore, the arm belt is symmetrically arranged on one side of the opening of the large arm fixing ring, and the pull ring is symmetrically arranged on one side of the large arm fixing ring away from the fixing point of the arm belt.

The technical scheme is as follows: utilize arm area and pull ring cooperation, tighten the arm through pulling the arm area and fix, fixed quick and simple high-efficient.

Still further, hand fixed plate is close to regulation pole one end side symmetry and is equipped with the wrist strap, hand fixed plate is kept away from regulation pole one end side and is equipped with the finger area.

The technical scheme is as follows: the wrist is fixed by the wrist strap, the finger strap is used for fixing the wrist, and the wrist strap and the finger strap are separated and fixed, so that the fixing effect is effectively improved.

Preferably, the inner concave surface of the large arm fixing ring and the side surface of the hand fixing plate are respectively provided with a foaming sponge layer.

The technical scheme is as follows: utilize the foaming sponge layer to carry out high-efficient protection to the arm and the hand of contact, prevent friction damage.

The beneficial effects of the utility model are as follows:

1. Through the adjusting component, the worm is utilized to drive the worm wheel to rotate, so that the gear is driven to rotate, the gear is used to drive the arc-shaped rack to rotate, so that the hand fixing plate is driven to rotate synchronously, the hand is adjusted to rotate synchronously, the hand can be adjusted synchronously through the steering of the adjusting knob, the worm is utilized to drive the worm wheel to drive the torque to be large, the worm wheel can be automatically fixed after adjustment, and the use is simple and convenient, so that the drafting effect is better;

2. the fixed position of the adjusting rod can be conveniently adjusted through the waist-shaped holes, so that patients with different arm lengths can be matched for use, and the practicability of the device is greatly improved;

3. Through the cooperation of the big arm fixing ring and the hand fixing plate, the hand fixing device can be used for fixing the hand arms and the hands rapidly, the hands do not need to be independently customized, the left hand and the right hand can be used, and the use cost is greatly reduced.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model, as well as the preferred embodiments thereof, together with the following detailed description of the utility model, given by way of illustration only, together with the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of an adjustable forearm rotary drafting device according to the present utility model;

FIG. 2 is a schematic view of a large arm fixing ring of an adjustable forearm rotary drafting device according to the present utility model;

FIG. 3 is a schematic diagram showing a connection structure between a connecting rod and a mounting base of an adjustable forearm rotary drafting device according to the present utility model;

FIG. 4 is a schematic view of an adjusting assembly of an adjustable forearm rotary drafting device according to the present utility model;

Fig. 5 is an enlarged schematic view of a part of the structure of fig. 1 of an adjustable forearm rotary drawing device according to the present utility model.

In the figure: 1. a large arm fixing ring; 101. foaming the sponge layer; 2. an arm belt; 3. a pull ring; 4. a mounting base; 5. a connecting rod; 6. an adjusting rod; 7. a fastening bolt; 8. a waist-shaped hole; 9. a right-angle connecting seat; 10. a fixed rod; 11. an arc-shaped rack; 12. a slide bar; 13. a baffle ring; 14. arc-shaped through grooves; 15. a worm wheel; 16. a worm; 17. a knob; 18. a rotating rod; 19. a gear; 20. a hand fixing plate; 21. a finger band; 22. and (5) a wrist strap.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Embodiment 1, refer to fig. 1 through 5, an adjustable forearm rotary drafting device, including big arm solid fixed ring 1, big arm solid fixed ring 1 is kept away from its opening one side and is equipped with mount pad 4, mount pad 4 transversely is fixed with connecting rod 5, connecting rod 5 is kept away from big arm solid fixed ring 1 one end transversely and is equipped with regulation pole 6, all be equipped with the fastening bolt 7 that is used for fixing between regulation pole 6 and the connecting rod 5, all be equipped with the fastening bolt 7 that is used for fixing between connecting rod 5 and the mount pad 4, regulation pole 6 is kept away from big arm solid fixed ring 1 one end and is equipped with right angle connecting seat 9, right angle connecting seat 9 is kept away from regulation pole 6 one side and is equipped with arc rack 11, arc wearing groove 14 has been seted up to arc rack 11, arc rack 11 lower part is equipped with hand fixed plate 20, arc wearing groove 14 transversely symmetrically slides and inserts and is equipped with slide bar 12, slide bar 12 outer peripheral face equal symmetry cover is equipped with baffle ring 13, baffle ring 13 all slides with arc rack 11 and offsets with arc rack 11 both sides, it is close to adjust pole 6 all vertically to be equipped with dead lever 10, right angle connecting seat 9 fixedly connects 9, right angle connecting seat 9 one side is equipped with the regulation subassembly that is used for controlling arc rack 11 pivoted.

In the specific embodiment, please refer to fig. 4 and 5, the adjusting component includes a gear 19 meshed with the tooth surface inside the arc-shaped rack 11, a rotating rod 18 is transversely inserted into the gear 19, the rotating rod 18 rotates and penetrates through the right-angle connecting seat 9, one end of the rotating rod 18 far away from the gear 19 is sleeved with a worm wheel 15, the bottom of the worm wheel 15 is transversely meshed with a worm 16, the worm 16 rotates and penetrates through the right-angle connecting seat 9, one end of the worm 16 far away from the worm wheel 15 is coaxially provided with a knob 17, the worm 16 is utilized to drive the worm wheel 15 to rotate, the gear 19 is further driven, the gear 19 drives the arc-shaped rack 11 to rotate, and then a hand fixing plate 20 is driven to synchronously rotate, so that the hand is synchronously rotated and adjusted.

Specifically, referring to fig. 3, a waist-shaped hole 8 is transversely formed at the intersection position of the adjusting rod 6 and the connecting rod 5, the fastening bolt 7 penetrates through the waist-shaped hole 8 in a sliding manner, the fixing position of the adjusting rod 6 is conveniently adjusted by using the waist-shaped hole 8, and patients with different arm lengths can be matched for use.

Specifically, referring to fig. 2, an arm strap 2 is symmetrically arranged on one side of an opening of the large arm fixing ring 1, a pull ring 3 is symmetrically arranged on one side of the large arm fixing ring 1, which is far away from a fixing point of the arm strap 2, the arm is fastened and fixed by pulling the arm strap 2 by utilizing the cooperation of the arm strap 2 and the pull ring 3, and the fixing is fast, simple and efficient.

Specifically, referring to fig. 4, a wrist strap 22 is symmetrically arranged on a side surface of the hand fixing plate 20 near one end of the adjusting rod 6, a finger strap 21 is arranged on a side surface of the hand fixing plate 20 far away from one end of the adjusting rod 6, the wrist is fixed by the wrist strap 22, and the finger strap 21 is used for fixing the wrist, so that the two are fixed separately, and the fixing effect is effectively improved.

Specifically, referring to fig. 2, the concave surface of the large arm fixing ring 1 and the side surface of the hand fixing plate 20 are both provided with a foam sponge layer 101, and the foam sponge layer 101 is used for efficiently protecting the contacted arm and hand from friction damage.

The working principle of the embodiment is as follows: when the hand fixing device is used, the upper arm is inserted into the large arm fixing ring 1, the arm belt 2 passes through the pull ring 3 and is tensioned, the pasting surface of the arm belt 2 is attached, then the hand is placed on the side surface of the hand fixing plate 20, fingers and wrists are respectively fixed through the finger belt 21 and the wristband 22, when the length of the arm needs to be adjusted, the fastening bolt 7 is loosened, the adjusting rod 6 is adjusted in the horizontal direction along the waist-shaped hole 8, after the adjustment, the adjusting rod is fixed through the fastening bolt 7, when the hand needs to be controlled to rotate, the rotating knob 17 drives the worm 16 to rotate, at the moment, the worm 16 drives the worm wheel 15 to rotate, then drives the gear 19 to drive the arc-shaped rack 11 to rotate, the arc-shaped rack 11 is fixed and moves in a guiding manner through the cooperation of the arc-shaped through the rotating rod 18 and then drives the hand fixing plate 20 to synchronously rotate, the hand is synchronously rotated and adjusted, and the hand can be synchronously adjusted through the steering of the adjusting knob 17.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a forearm rotation drafting device with adjustable, includes big arm fixed ring (1), a serial communication port, big arm fixed ring (1) is kept away from its opening one side and is equipped with mount pad (4), mount pad (4) transversely are fixed with connecting rod (5), connecting rod (5) are kept away from big arm fixed ring (1) one end and are transversely equipped with regulation pole (6), all be equipped with between regulation pole (6) and connecting rod (5) and be used for fixed fastening bolt (7), all be equipped with between connecting rod (5) and mount pad (4) and be used for fixed fastening bolt (7), big arm fixed ring (1) one end is kept away from to regulation pole (6) one end is equipped with right angle connecting seat (9), right angle connecting seat (9) are kept away from regulation pole (6) one side and are equipped with arc rack (11), arc through groove (14) have been seted up to arc rack (11), arc rack (11) lower part is equipped with hand fixed plate (20), hand fixed plate (14) transversely slide and insert and be equipped with slide bar (12), slide bar (12) outer peripheral face all is equipped with symmetrical baffle ring (13) and all is equipped with baffle bar (12) and all is close to fixed with arc rack (12), the fixing rods (10) are fixedly connected with the right-angle connecting seat (9), and an adjusting assembly for controlling the arc-shaped rack (11) to rotate is arranged on one side of the right-angle connecting seat (9).

2. The adjustable forearm rotary drawing device according to claim 1, wherein the adjusting assembly comprises a gear (19) meshed with the tooth surface inside the arc-shaped rack (11), the gear (19) is transversely inserted with a rotating rod (18), the rotating rod (18) rotates to penetrate through the right-angle connecting seat (9), one end, far away from the gear (19), of the rotating rod (18) is sleeved with a worm wheel (15), the bottom of the worm wheel (15) is transversely meshed with a worm (16), the worm (16) rotates to penetrate through the right-angle connecting seat (9), and one end, far away from the worm wheel (15), of the worm (16) is coaxially provided with a knob (17).

3. An adjustable forearm rotary drawing device according to claim 2, characterized in that a waist-shaped hole (8) is transversely arranged at the intersection position of the adjusting rod (6) and the connecting rod (5), and the fastening bolt (7) is penetrated into the waist-shaped hole (8) in a sliding way.

4. An adjustable forearm rotary drafting device according to claim 3, characterized in that the big arm fixing ring (1) is symmetrically provided with an arm belt (2) on one side of the opening, and the big arm fixing ring (1) is symmetrically provided with a pull ring (3) on one side of the fixing point far away from the arm belt (2).

5. The adjustable forearm rotary drawing device according to claim 4, wherein the hand fixing plate (20) is symmetrically provided with a wrist strap (22) near one end side of the adjusting rod (6), the hand fixing plate (20) is provided with a finger strap (21) far away from one end side of the adjusting rod (6), and the wrist strap (22), the finger strap (21) and the arm strap (2) are self-adhesive magic tapes.

6. The adjustable forearm rotary drawing device according to claim 5, wherein the inner concave surface of the big arm fixing ring (1) and the side surface of the hand fixing plate (20) are both provided with foaming sponge layers (101).