An iris hook

Abstract

The utility model provides an iris drag hook belongs to iris drag hook field, including loading fixer, the inside cooperation of loading fixer is provided with contraction subassembly, the left side lower extreme cooperation of contraction subassembly is provided with the drag subassembly, when needing to use iris drag hook, left pull drag hook head, make it drive telescopic link to slide to telescopic groove, drive pull block to slide left, thereby drive the embedded ring to slide to the inside of the embedded groove, drive the limiting ring to slide in the limiting groove, directly loosen the pulling force to drag hook head, spring rod directly promotes the limiting ring to slide to the outside of the embedded groove, through the pull block of connection drive telescopic link to slide to telescopic groove right end, when the fixed effect under the pull down iris dilator ring slightly contracts when withdrawing drag hook inserts and embeds in the positioning small hole, the iris dilator ring of contraction is through the upper and lower clamping edge of four corners and iris edge clamping, can realize to the quick installation use of to iris dilator ring, improved the practicability of iris drag hook.

Description

Technical Field

[0001] This utility model relates to the field of iris retractors, and more specifically, to an iris retractor. Background Technology

[0002] In cataract surgery, for small pupils caused by various reasons, if preoperative mydriatic agents fail to dilate the pupil, instruments are needed during surgery to retract the iris and dilate the pupil to facilitate successful cataract surgery. The iris retractor is an L-shaped, vertical, single hook, and a fixing sleeve is fitted onto the hook handle. Existing fixing sleeves have relatively large holes to facilitate hook handle movement. After the hook hooks the iris, the fixing sleeve lies flat, with its two ends abutting against the upper and lower sides of the hook handle to prevent slippage.

[0003] A search revealed that Chinese patent CN216365127U discloses "An Iris Retractor," which includes a retractor handle, a retractor body, and a fixing sleeve. The retractor body is connected to the first end of the retractor handle. The fixing sleeve has an adjustment hole, and the retractor handle passes through the adjustment hole. A blocking head is connected to the second end of the retractor handle. The diameter of the blocking head is larger than the diameter of the adjustment hole to prevent the fixing sleeve from slipping off the retractor handle. This reduces the step of putting the fixing sleeve on the retractor handle before inserting the retractor body into the pupil, avoids repeated operations, improves surgical efficiency, and enhances the stability of the surgical procedure. However, it still has the following drawbacks: (1) The existing iris puller pulls the iris on one side by a single hook, which results in uneven force and requires multiple pulls to adjust the position of the iris dilation ring, thus reducing the ease of use of the iris puller.

[0004] (2) The existing iris hook body is always exposed, and the hook body is made of a material that is easy to break or bend. Once bent or broken, it cannot be restored, which will cause damage to the hook.

[0005] Therefore, we made improvements to this by proposing an iris retractor. Utility Model Content

[0006] The purpose of this utility model is to address the problems of existing iris pullers, which use a single hook to pull the iris on one side, resulting in uneven force application and requiring multiple pulls to adjust the position of the iris dilation ring. This reduces the ease of use of the iris puller, and the existing iris puller body is always exposed. Furthermore, the hook body is made of a material that is easily broken or bent, and once bent or broken, it cannot be restored, which will cause damage to the puller.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: An iris retractor to improve the above-mentioned problems.

[0008] The present invention is as follows: The system includes a loading and securing device, which has a retractable assembly inside, and a pulling assembly is provided at the lower left end of the retractable assembly. The retraction assembly includes a telescopic groove inside the loading fixture, and a telescopic rod is telescopically installed inside the telescopic groove. A hook head is connected to the left end of the telescopic rod. The pulling component includes an iris dilation ring fitted at the lower end of the hook head, and the edges of the iris dilation ring are fitted with retaining edges at the top and bottom.

[0009] As a preferred technical solution of this utility model, the shrinking component further includes a groove opened inside the right side wall of the loading fixer, and a locking ring is slidably disposed inside the groove.

[0010] As a preferred technical solution of this utility model, the outer wall of the right end of the telescopic rod is provided with a pull block that is fixedly connected to the embedded ring.

[0011] As a preferred technical solution of this utility model, the side wall of the groove is provided with a limiting groove, and the side wall of the ring is provided with a limiting ring that cooperates with the limiting groove.

[0012] As a preferred technical solution of this utility model, a spring rod is provided on the side wall of the limiting ring away from the pull block.

[0013] As a preferred technical solution of this utility model, the iris dilation ring has a positioning hole through which it cooperates with the hook head.

[0014] As a preferred technical solution of this utility model, the cross-sectional dimensions of the telescopic rod and the cross-sectional dimensions of the telescopic groove are consistent with each other.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solution of this utility model: 1. The iris pull hook, consisting of a telescopic rod, hook head, pull block, insert ring, limiting ring, and spring rod, allows for easy operation. To use the iris pull hook, pull the hook head to the left, causing the telescopic rod to slide into the telescopic groove. This, in turn, causes the pull block to slide to the left, leading to the insert ring sliding into the groove and the limiting ring sliding within the groove. This compresses the spring rod, causing it to contract. When the hook head is inserted into the positioning hole, the iris dilator ring diameter needs to be reduced. Simply release the tension on the hook head, and the spring rod will push the limiting ring to the right, causing the insert ring to slide out of the groove. The pull block will then slide the telescopic rod to the right end of the telescopic groove, causing the hook head to retract into the groove. This effectively reduces the size of the iris dilator ring. After adjusting the iris dilator ring position, removing the hook head from the positioning hole allows the spring rod to push the insert ring to the right again, causing the hook head to retract directly into the telescopic groove for convenient storage and improved usability. 2. By using the iris dilation ring, positioning hole, and locking edge, the iris dilation ring is slightly contracted when the pull hook is inserted into the positioning hole for fixation. The contracted iris dilation ring is then engaged with the edge of the iris through the upper and lower locking edges at the four corners, thus enabling the quick installation and use of the iris dilation ring and improving the practicality of the iris pull hook. Attached Figure Description

[0016] Figure 1 A schematic diagram of an iris retractor provided by this utility model; Figure 2 A schematic diagram of a retractable component for an iris retractor provided by this utility model; Figure 3 A partial bottom view of the retraction component of an iris retractor provided by this utility model; Figure 4 A schematic diagram of an iris puller assembly provided by this utility model.

[0017] The image shows: 1. Loading fixture; 201. Telescopic groove; 202. Telescopic rod; 203. Hook head; 204. Pull block; 205. Embedded groove; 206. Embedded ring; 207. Limiting groove; 208. Limiting ring; 209. Spring rod; 301. Iris dilation ring; 302. Positioning hole; 303. Edge clamp. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0019] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] like Figure 1-4 As shown, this embodiment proposes an iris pull hook, including a loading and fixing device 1, a retraction component is provided inside the loading and fixing device 1, and a pulling component is provided at the lower left end of the retraction component; The retraction assembly includes a telescopic groove 201 inside the loading fixture 1, and a telescopic rod 202 is telescopically provided inside the telescopic groove 201. A hook head 203 is connected to the left end of the telescopic rod 202. The pulling component includes an iris dilation ring 301 fitted at the lower end of the hook head 203, and the edges of the iris dilation ring 301 are fitted with retaining edges 303.

[0023] like Figure 2 As shown, the shrinking assembly also includes a groove 205 opened inside the right side wall of the loading fixture 1. A ring 206 is slidably disposed inside the groove 205. The ring 206 slides into the groove 205, causing the limiting ring 208 to slide in the limiting groove 207, which compresses the spring rod 209 to shrink it.

[0024] like Figure 3 As shown, the outer wall of the right end of the telescopic rod 202 is provided with a pull block 204 that is fixedly connected to the embedded ring 206. By connecting the pull block 204, the telescopic rod 202 is driven to slide towards the right end of the telescopic groove 201, which can drive the hook head 203 to retract into the telescopic groove 201, thereby directly causing the iris dilation ring 301 to contract on all four sides.

[0025] like Figure 2As shown, the side wall of the groove 205 has a limiting groove 207, and the side wall of the ring 206 is provided with a limiting ring 208 that cooperates with the limiting groove 207. The limiting ring 208 slides in the limiting groove 207 and squeezes the spring rod 209 to make it contract. When the hook head 203 is inserted into the positioning hole 302, the diameter of the iris dilation ring 301 needs to be reduced to a smaller size. Then, the pulling force on the hook head 203 is released directly, and the spring rod 209 pushes the limiting ring 208 to the right, causing the ring 206 to slide out of the groove 205. Through the connected pull block 204, the telescopic rod 202 is driven to slide towards the right end of the telescopic groove 201, which can drive the hook head 203 to retract into the telescopic groove 201.

[0026] like Figure 2 As shown, a spring rod 209 is fitted on the side wall of the limiting ring 208 away from the pull block 204. The spring rod 209 pushes the limiting ring 208 directly to the right, causing the insert ring 206 to slide outwards towards the groove 205. Through the connected pull block 204, the telescopic rod 202 slides towards the right end of the telescopic groove 201, which in turn causes the hook head 203 to retract into the telescopic groove 201, thus directly causing the iris dilation ring 301 to shrink on all four sides. After adjusting the position of the iris dilation ring 301, the hook head 203 is removed from the positioning hole 302. The spring rod 209 then pushes the insert ring 206 to the right again, causing the hook head 203 to retract directly into the telescopic groove 201, resulting in convenient storage.

[0027] like Figure 4 As shown, the iris dilation ring 301 has positioning holes 302 through its interior on both sides, which cooperate with the hook head 203. When the hook head 203 is inserted into the positioning hole 302, the diameter of the iris dilation ring 301 needs to be reduced. When the pulling force on the hook head 203 is released, the spring rod 209 pushes the limiting ring 208 to the right, causing the insert ring 206 to slide outwards towards the groove 205. Through the connected pull block 204, the telescopic rod 202 slides towards the right end of the telescopic groove 201, which can cause the hook head 203 to retract into the telescopic groove 201, thus directly causing the iris dilation ring 301 to shrink on all four sides.

[0028] like Figure 2 As shown, the cross-sectional dimensions of the telescopic rod 202 match the cross-sectional dimensions of the telescopic groove 201. When the iris hook is needed, the hook head 203 is pulled to the left, causing the telescopic rod 202 to slide into the telescopic groove 201, which in turn causes the pull block 204 to slide to the left, thereby causing the insert ring 206 to slide into the insert groove 205, thus improving the stability of the pull.

[0029] Specifically, when using this hook: When the iris dilation hook is needed, pull the hook head 203 to the left, causing it to slide the telescopic rod 202 into the telescopic groove 201, which in turn causes the pull block 204 to slide to the left, thereby causing the insert ring 206 to slide into the insert groove 205, and causing the limiting ring 208 to slide within the limiting groove 207, compressing the spring rod 209 to contract. When the hook head 203 is inserted into the positioning hole 302, the diameter of the iris dilation ring 301 needs to be reduced. Then, release the pulling force on the hook head 203. The spring rod 209 will directly push the limiting ring 208 to the right, causing the insert ring 206 to slide out of the insert groove 205. Through the connected pull block 204, the telescopic rod 202 will slide towards the right end of the telescopic groove 201, thus driving the iris dilation hook. When the hook head 203 is retracted into the telescopic groove 201, the iris dilation ring 301 will shrink on all four sides. After adjusting the position of the iris dilation ring 301, the hook head 203 is removed from the positioning hole 302. The spring rod 209 pushes the insert ring 206 to the right again, causing the hook head 203 to retract directly into the telescopic groove 201 for convenient storage, improving the ease of use of the iris hook. When the hook is retracted and fixed in the positioning hole 302, the iris dilation ring 301 is pulled to shrink slightly. The shrunken iris dilation ring 301 is then engaged with the edge of the iris by the upper and lower locking edges 303 at the four corners, enabling quick installation and use of the iris dilation ring 301, thus improving the practicality of the iris hook.

[0030] All technical features in this embodiment can be freely combined according to actual needs.

[0031] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An iris hook, comprising a loading fixator (1), characterized in that: The loading fixer (1) is equipped with a retractable component inside, and a pull component is equipped with a pull component at the lower left side of the retractable component; The retraction assembly includes a telescopic groove (201) inside the loading fixture (1), and a telescopic rod (202) is telescopically provided inside the telescopic groove (201). A hook head (203) is connected to the left end of the telescopic rod (202). The pulling component includes an iris dilation ring (301) fitted at the lower end of the hook head (203), and the edges of the iris dilation ring (301) are fitted with retaining edges (303) on the upper and lower sides.

2. The iris retractor according to claim 1, characterized in that, The shrinking assembly also includes a groove (205) opened inside the right side wall of the loading fixer (1), and a ring (206) is slidably disposed inside the groove (205).

3. An iris retractor according to claim 2, characterized in that, The right end of the telescopic rod (202) is provided with a pull block (204) that is fixedly connected to the insert ring (206).

4. An iris retractor according to claim 2, characterized in that, The side wall of the groove (205) is provided with a limiting groove (207), and the side wall of the ring (206) is provided with a limiting ring (208) that cooperates with the limiting groove (207).

5. An iris retractor according to claim 4, characterized in that, A spring rod (209) is provided on the side wall of the limiting ring (208) away from the pull block (204).

6. An iris retractor according to claim 1, characterized in that, The iris dilation ring (301) has a positioning hole (302) that is connected to the hook head (203) through both sides.

7. An iris retractor according to claim 1, characterized in that, The cross-sectional dimensions of the telescopic rod (202) match the cross-sectional dimensions of the telescopic groove (201).

Images