Expandable channel of cold light source

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a cold light source expandable channel, which comprises a retractor body and a downward pressing mechanism arranged on the retractor body, and is characterized in that the retractor body consists of two symmetrically distributed retractor sheets, a connecting arm fixedly arranged at the upper ends of the retractor sheets, and a connecting rod arranged at the lower end of the connecting arm; the pressing mechanism is fixedly arranged on the connecting arm on one side; the connecting handle is fixedly arranged on the connecting arm on the other side; an arc-shaped hook foot is arranged at the lower part of the retraction sheet, a plurality of grooves are formed in the inner wall of the retraction sheet at equal intervals, and light assemblies are arranged in the grooves; the downward pressing mechanism comprises a box body fixedly mounted on the connecting arm and a pressure structure mounted on the lower side of the box body; a light source is arranged in the retractor, a special structure is adopted to ensure that the lighting effect is good and no blind area exists when the retractor is used, a special pressing structure is adopted to ensure that the retractor can control the distraction angle and can be rapidly distraction and fixed after being inserted, and the whole retractor is simple to use, rapid to fix and sufficient in lighting.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a cold light source expandable channel. Background Art

[0002] The working channel technology for minimally invasive spine surgery is a representative technology in minimally invasive spine surgery. The soft tissues at the percutaneous incision are expanded through a tubular retractor to create a surgical channel and form a surgical space, so that surgical devices can extend from the incision into the target area for surgical operations. The surgical channels established by the currently used retractors are narrow, and it is difficult to perform surgical operations such as tying knots inside the channel. The light source device needs to be held separately, which limits the effective surgical field of view and operating space, and cannot achieve rapid expansion or fixation of the expansion angle, greatly affecting surgical operations and increasing the surgical difficulty. Content of the Utility Model

[0003] The purpose of the utility model is to provide a cold light source expandable channel. The utility model has a built-in light source and uses a special structure to ensure good lighting effect during use without blind spots; the utility model adopts a special pressing-down structure to ensure that the expansion angle can be controlled, rapidly expanded and fixed after the retractor is inserted, and the overall use is simple, the fixation is rapid, and the lighting is sufficient.

[0004] To achieve the above technical effects, the utility model is realized through the following technical solutions: A cold light source expandable channel, comprising a retractor body and a pressing-down mechanism installed on the retractor body, characterized in that: the retractor body is composed of two symmetrically distributed retractor blades, a connecting arm fixedly installed at the upper end of the retractor blades, a pressing-down mechanism fixedly installed on one connecting arm, and a connecting handle fixedly installed on the other connecting arm; the two symmetrically distributed retractor blades are connected through a hinge mechanism, and an arc-shaped hook foot is arranged at the lower part of the retractor blade. A plurality of grooves are equidistantly arranged on the inner wall of the retractor blade, and a lighting component is arranged in the grooves.

[0005] The pressing-down mechanism includes a box body fixedly installed on the connecting arm and a pressure structure installed on the lower side of the box body; a rotating rod is arranged inside the box body, the end of the rotating rod is meshed with a rack, and the lower end of the rack is fixedly connected with the pressure structure.

[0006] Furthermore, a lighting control component, a second gear and a first gear are respectively arranged at the front end, middle part and rear end of the rotating rod; the first gear is meshed with the rack; a first slider is arranged on the outer side of the box body, and a dial is fixedly installed at the outer end of the first slider; the first slider is slidably installed in a first chute arranged on the outer side of the box body, and a spring is arranged in the first chute; one end of the spring is fixedly connected with the inner wall of the first chute, and the other end is fixedly connected with the outer wall of the first slider. A fixed block is arranged on the inner side of the box body, and the dial is rotatably connected to the fixed block.

[0007] Further, the pressure structure includes a fixed rod fixedly installed outside the hinge mechanism, a pair of telescopic pressure rods cross-hinged on the fixed rod, and an intermediate pressing plate slidably installed in the second chute at the upper part of the telescopic pressure rod; the telescopic pressure rod is provided with a second chute, and the intermediate pressing plate is slidably installed inside the second chute; the upper end of the pressing plate is fixedly connected to a rack; a third chute is provided at the lower part of the box body; the upper end of the telescopic pressure rod is slidably installed in the third chute, and the lower end is fixedly connected to the side end of the connecting arm.

[0008] Further, the lighting assembly includes a light strip, a lens and a transparent partition. The light strip is arranged on the upper wall of the groove, the lens is arranged on the lower wall, and the transparent partition is fixedly installed outside the groove; the groove is a V-shaped groove.

[0009] Further, the lighting control assembly includes a battery and a lighting button, and the light strip, the battery and the lighting button are electrically connected to the lighting control assembly.

[0010] Further, a thread adapted to an existing external handle is provided at the tail of the connecting handle.

[0011] The beneficial effects of the present utility model are as follows:

[0012] Through a special structure, the present utility model ensures the convergence of the lamp tubes in the retractor channel, ensuring sufficient lighting. Since the light strips are arranged in stages on the inner wall of the retractor blade, each light strip can be controlled to illuminate alone or together through the lighting button, providing more choices for different surgical occasions.

[0013] Through a special pressing-down structure and a self-locking mechanism, the present utility model ensures that the inserted retractor can be quickly opened to the required angle and can be quickly locked after opening, reducing the operation of the doctor. An arc-shaped hook foot is provided at the lower part of the retractor to further expand the field of view at the bottom of the retractor. The overall use is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a perspective view of the present utility model;

[0016] Figure 2 is an axonometric view of the present utility model;

[0017] Figure 3 is a sectional view of the present utility model;

[0018] Figure 4 It is the side view of the present utility model;

[0019] Figure 5 is the present utility model Figure 4 the enlarged schematic view of part A in it;

[0020] Figure 6 is the present utility model Figure 3 the enlarged schematic view of part B in it;

[0021] Figure 7 is the present utility model Figure 3 the cross-sectional view at C-C in it;

[0022] Figure 8 is the present utility model Figure 7 the enlarged schematic view of part D in it;

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Retractor body; 2. Pressing-down mechanism; 11. Retracting piece; 12. Connecting arm; 13. Hinge mechanism; 14. Groove; 141. Light strip; 142. Lens; 143. Transparent partition; 15. Arc-shaped hook foot; 16. Connecting handle; 21. Pressure mechanism; 211. Intermediate pressing plate; 212. Second chute; 213. Telescopic pressing rod; 214. Fixed rod; 215. Third chute; 22. Rack; 23. Rotating rod; 231. First gear; 232. Second gear; 233. Light control component; 24. Box body; 241. Paddle; 242. Chute; 243. Spring; 244. First slider; 245. Fixed block. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] A cold light source expandable channel includes a retractor body 1 and a pressing-down mechanism 2 installed on the retractor body 1, and is characterized in that: the retractor body 1 is composed of two symmetrically distributed retracting pieces 11, a connecting arm 12 fixedly installed at the upper end of the retracting piece 11, a pressing-down mechanism 2 fixedly installed on one connecting arm 12, and a connecting handle fixedly installed on the other connecting arm 12

[0028] 16 Structure: Two symmetrically distributed retractor blades 11 are connected by a hinge mechanism 13. An arc-shaped hook foot 15 is provided at the lower part of the retractor blade 11. A number of grooves 14 are equidistantly arranged on the inner wall of the retractor blade 11, and a lighting assembly is arranged in the grooves 14; The pressing mechanism 2 includes a box body 24 fixedly installed on the connecting arm 12 and a pressure structure 21 installed on the lower side of the box body 24; A rotating rod 23 is arranged inside the box body 24. The end of the rotating rod 23 is meshed and connected with a rack 22, and the lower end of the rack 22 is fixedly connected to the pressure structure 21.

[0029] A lighting control component 233, a second gear 232 and a first gear 231 are respectively arranged at the front end, middle end and rear end of the rotating rod 23; The first gear 231 is meshed and connected with the rack 22; A first slider 244 is arranged on the outer side of the box body 24, and a dial 241 fixedly installed at the outer end of the first slider 244; The first slider 244 is slidably installed in a first chute 242 arranged on the outer side of the box body 24, and a spring 243 is arranged in the first chute 242; One end of the spring 243 is fixedly connected to the inner wall of the first chute 242, and the other end is fixedly connected to the outer wall of the first slider 244. A fixed block 245 is arranged on the inner side of the box body 24, and the dial 241 is rotatably connected to the fixed block 245;

[0030] The pressure structure 21 includes a fixed rod 214 fixedly installed on the outer side of the hinge mechanism 13, a pair of telescopic pressure rods 213 cross-hinged on the fixed rod 214 and an intermediate pressing plate 2111 slidably installed in a second chute 212 on the upper part of the telescopic pressure rod 213; A second chute 212 is arranged on the telescopic pressure rod 213, and the intermediate pressing plate 2111 is slidably installed inside the second chute 212; The upper end of the intermediate pressing plate 2111 is fixedly connected to the rack 22; A third chute 215 is arranged at the lower part of the box body 24; The upper end of the telescopic pressure rod 213 is slidably installed in the third chute 215, and the lower end is fixedly connected to the side end of the connecting arm 12.

[0031] The lighting assembly includes a light strip 141, a lens 142 and a transparent partition 143. The light strip 141

[0032] is arranged on the upper wall of the groove 14, the lens 142 is arranged on the lower wall, and the transparent partition 143 is fixedly installed on the outside of the groove 14; The groove 14 is a V-shaped groove.

[0033] The lighting control component 233 includes a battery and a lighting button. The light strip 141, the battery and the lighting button are electrically connected to the lighting control component 233.

[0034] A thread adapted to an existing external handle is provided at the tail of the connecting handle 16.

[0035] Embodiment 2

[0036] Working principle:

[0037] S1. When performing minimally invasive spinal surgery, a surgical channel needs to be established. At this time, the doctor needs to use a retractor to retract the epidermal tissue to establish the surgical channel, thereby exposing the surgical field for the doctor to perform surgical operations.

[0038] S2. Insert the retractor into the patient's incision. When it reaches a certain position, the doctor rotates the rotating rod 23 counterclockwise. The first gear 231 fixedly installed on the rotating rod 23 drives the rack 22 to move downward. The middle pressing plate 211 fixedly installed with the rack 22 moves downward simultaneously. The middle pressing plate 211 slides along the second chute 212 to press the telescopic pressure rod 213 to expand towards both ends. The upper end of the telescopic pressure rod 213 slides towards both sides along the third chute 215. The middle part of the telescopic pressure rod 213 rotates around the central fixed rod 214, driving the lower fixedly connected connecting arm 12 to expand outward. Therefore, when the middle pressing plate 211 moves downward, it will drive the connecting arm 12 to expand outward around the hinge mechanism 13. The arc-shaped hook feet 15 at the bottom of the retracting piece 11 will hook the end of the muscle, thereby driving the muscle to be stretched, ensuring the vision of the middle channel of the retractor, facilitating the operation. After the stretching is completed, the dial 241 locks the second gear 232 to prevent the second gear 232 from rotating back, avoiding the retraction of the retractor and affecting the operation.

[0039] S3. At this time, the doctor turns on the illumination by pressing the lighting button 2332. The

[0040] Specific operation: Press the button for the first time, and the first-layer light strip 141 lights up; press the button for the second time, the first-layer light strip 141 goes out, and the second-layer light strip 141 lights up; press the button for the third time, the second-layer light strip 141 goes out, and the third-layer light strip 141 lights up; press the button for the fourth time, the third-layer light strip 141 goes out, and the bottommost light strip 141 located on the inner wall of the arc-shaped hook foot 15 lights up; press the button for the fifth time, the bottommost light strip 141 goes out, and all the light strips 141 light up; press the button for the sixth time, all the light strips 141 go out.

[0041] S4. After the operation is completed, slide the slider 244 along the chute 242. The slider 244 drives the dial 241 to rotate around the fixed block 245 at the center of the dial 241, so that the tip of the dial 241 moves away from the second gear 232. After the second gear 232 is no longer clamped by the dial 241, due to the pressure of the muscle, the retracting piece 11 retracts, driving the connecting arm 12 to rotate, and then driving the middle pressing plate 211 to move upward. The rack 22 moves upward, driving the first gear 231 to rotate clockwise. The spring 243 in the chute 242 rebounds to press the slider 244 back to the starting position, and the dial 241 contacts the second gear 232 again. The retractor returns to the initial state; the doctor removes the retractor from the incision, and the whole process is completed.

[0042] Embodiment 3

[0043] The light strip 141 is electrically connected to the lighting control component 233, and the lighting control component 233 is installed on the rotating rod 23. The rotation angle of the rotating rod 23 is not large, and it needs to retract after use. Therefore, normal use will not cause problems such as curling or winding of the related equipment for electrical connection.

Claims

1. A cold light source expandable channel, comprising a retractor body (1) and a pressing mechanism (2) mounted on the retractor body (1), characterized in that: The retractor body (1) is composed of two symmetrically distributed retractor plates (11), a connecting arm (12) fixedly mounted on the upper end of the retractor plates (11), a pressing mechanism (2) fixedly mounted on one side of the connecting arm (12), and a connecting handle (16) fixedly mounted on the other side of the connecting arm (12); the two symmetrically distributed retractor plates (11) are connected by a hinge mechanism (13); the lower part of the retractor plates (11) is provided with an arc-shaped hook foot (15); the inner wall of the retractor plates (11) is provided with a plurality of grooves (14) at equal intervals, and a light assembly is provided in the groove (14); The pressing mechanism (2) comprises a box body (24) fixedly mounted on the connecting arm (12) and a pressure structure (21) mounted on the lower side of the box body (24); a rotating rod (23) is arranged inside the box body (24), the end of the rotating rod (23) is meshedly connected to a rack (22), and the lower end of the rack (22) is fixedly connected to the pressure structure (21).

2. The expandable channel of cold light source according to claim 1, characterized in that: The front end, middle part and rear end of the rotating rod (23) are respectively provided with a light control component (233), a second gear (232) and a first gear (231); the first gear (231) is meshedly connected with the rack (22); a first slider (244) is provided on the outside of the box body (24), and a paddle (241) is fixedly installed on the outer end of the first slider (244); the first slider (244) is slidably installed in a first slide groove (242) provided on the outside of the box body (24), and a spring (243) is provided in the first slide groove (242); one end of the spring (243) is fixedly connected to the inner wall of the first slide groove (242), and the other end is fixedly connected to the outer wall of the first slider (244); a fixed block (245) is provided on the inside of the box body (24), and the paddle (241) is rotatably connected to the fixed block (245).

3. The expandable channel of cold light source according to claim 1, characterized in that: The pressure structure (21) comprises a fixed rod (214) fixedly mounted on the outside of the hinge mechanism (13), a pair of telescopic pressure rods (213) cross-hinged on the fixed rod (214) and an intermediate pressure plate (211) slidably mounted on the second slide groove (212) at the upper part of the telescopic pressure rod (213); the telescopic pressure rod (213) is provided with a second slide groove (212), and the intermediate pressure plate (211) is slidably mounted inside the second slide groove (212); the upper end of the pressure plate (211) is fixedly connected to the rack (22); the lower part of the box body (24) is provided with a third slide groove (215); the upper end of the telescopic pressure rod (213) is slidably mounted in the third slide groove (215), and the lower end is fixedly connected to the side end of the connecting arm (12).

4. The expandable channel of cold light source according to claim 1, characterized in that: The lighting assembly comprises a light strip (141), a lens (142) and a transparent partition (143); the light strip (141) is arranged on the upper wall of the groove (14), the lens (142) is arranged on the lower wall, and the transparent partition (143) is fixedly mounted on the outside of the groove (14); the groove (14) is a V-shaped groove.

5. The expandable channel of cold light source according to claim 2, characterized in that: The light control component (233) comprises a battery and a light button, and the light strip (141), the battery and the light button are electrically connected to the light control component (233).

6. The expandable channel of cold light source according to claim 1, characterized in that: The rear part of the connecting handle (16) is provided with a thread which is compatible with an existing external handle.

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