Pincette for pterygium excision

Abstract

The utility model belongs to the field of ophthalmic operation tool, especially be related to a forceps for pterygium excision. The technology includes two handle, the end of two handle is hinged to each other, is provided with drive assembly between two handle, is provided with locking assembly between two handle, is fixed with clamping part on the hinged end of two handle, the clamping part includes two arc clamping rods, is fixed with straight line clamping rod between the opposite end of two arc clamping rods, the other end of one arc clamping rod is fixed with support rod, support rod is fixed on handle, and the clamping part whole presents hook shape. The clamping part of hook shape structure is small, and the shape is more adaptive to the operation area of eye, can clamp the blood vessel tissue of whole pterygium excision site once, is more convenient to clamp operation, need not adjust orientation and clamp several times, two arc clamping rods and straight line clamping rod combination present boat type, are more adaptive to the shape of lacrimal caruncle area, and the resection along the clamping trace is more beautiful.

Description

Technical Field

[0001] This utility model belongs to the field of ophthalmic surgical tools, and in particular relates to a forceps used in pterygium excision. Background Technology

[0002] Pterygium is a common ophthalmic disease, and surgery is the only effective treatment. The root cause of pterygium is fascial hyperplasia due to various factors, and the surgical outcome depends on the complete removal of the hyperplastic fascia. During surgery, it is often found that the hyperplastic fascia has one or more dilated blood vessels running through the head, neck, and body of the pterygium. When removing the pterygium, these blood vessels must be removed along with the fascia, leading to oozing or massive bleeding, affecting the surgical field, subsequent surgical steps, and consequently, prolonged operation time, hematoma formation, collateral damage, poor patient comfort, and even difficulty in suturing the transplant flap, ultimately impacting the final prognosis.

[0003] Inspired by the use of forceps to clamp the fat to be removed during oculoplastic surgery, followed by electrocoagulation for hemostasis, surgeons have found that using forceps to clamp the pterygium's blood vessels for 5-10 seconds before cutting it during pterygium removal significantly reduces bleeding, improves the surgical field, and leads to successful completion of the surgery. Postoperatively, the conjunctival flap occlusion is good, and patients are satisfied. However, there are currently no special forceps for pterygium resection among existing medical forceps. When using existing general-purpose forceps to clamp the pterygium's blood vessels, it is impossible to clamp the entire pterygium's blood vessels in one go. This necessitates multiple clamping operations from multiple angles during the surgery to ensure that the blood vessels at the pterygium removal site are adequately clamped, which seriously affects the progress of the surgery, prolongs the operation time, and affects the patient's comfort during the procedure. Utility Model Content

[0004] The purpose of this invention is to provide a forceps for use in pterygium excision, which can clamp the blood vessels at the pterygium excision site in one operation, and makes it more convenient to clamp the pterygium.

[0005] The forceps used in pterygium resection include two handles, one end of which is hinged to each other. A drive assembly for pushing the two handles to swing open is provided between the two handles, and a locking assembly for locking the two handles to swing closed is provided between the two handles. A clamping part for clamping the pterygium blood vessels is fixed on the hinged end of the two handles. The clamping part includes two arc-shaped clamping rods, and a straight clamping rod is fixed between the opposite ends of the two arc-shaped clamping rods. A support rod is fixed to the other end of one of the arc-shaped clamping rods. The support rod is fixed to the handle, and the clamping part is hook-shaped as a whole.

[0006] Furthermore, the drive assembly includes two spring plates, which are arc-shaped. One end of each spring plate is fixed to one of the two handles, and the unfixed ends of the two spring plates are hinged together.

[0007] Furthermore, the locking assembly includes a positioning plate, which has an "L" shaped structure. A horizontal section of the positioning plate is fixed to one of the handles, and a number of locking blocks are evenly fixed along the length of the vertical section of the positioning plate. A stop block for blocking the locking blocks is fixed on the other handle, and the stop block has an inclined surface at the corner facing the locking block.

[0008] Furthermore, the vertical section of the positioning plate has an arc-shaped structure.

[0009] Furthermore, several anti-slip grooves are evenly distributed along the length of both handles.

[0010] Furthermore, the clamping portion gradually tapers from the handle direction to the end.

[0011] Furthermore, the clamping part and the handle are made of rust-resistant material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The hook-shaped clamping part is small in size and its shape is more suitable for the narrow surgical area of ​​the eye. It can clamp the blood vessels and tissues of the entire pterygium removal site in one operation, making it easier to clamp the pterygium without having to adjust the position and clamp it multiple times, saving surgical time, speeding up the surgical process, and making the surgical process more comfortable for the patient. The two arc-shaped clamping rods and the straight clamping rod are combined into a boat-shaped structure, which can better adapt to the shape of the lacrimal caruncle area. When removing the pterygium along the boat-shaped marks, the hyperplastic fascia can be removed more thoroughly, and the removal along the boat-shaped clamping marks is more aesthetically pleasing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a perspective view of the present utility model;

[0017] Figure 4 This is a new exploded view of the present invention;

[0018] The components in the diagram are named as follows: 1. Clamping part; 1.1. Arc-shaped clamping rod; 1.2. Support rod; 1.3. Straight clamping rod; 2. Handle; 3. Stop block; 4. Spring plate; 5. Positioning plate; 6. Locking block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0020] Example 1

[0021] This embodiment describes a forceps used in pterygium excision, such as... Figure 1 , Figure 2 and Figure 3 As shown, it includes two handles 2, one end of which is hinged to each other; in this embodiment, one end of the two handles 2 is hinged via a pivot, as shown... Figure 4 As shown, the pivot is horizontally fixed on the front side wall of one end of one of the handles 2, and a through hole for inserting the pivot is provided on one end of the other handle 2, so that the two handles 2 can swing open and close with the pivot as the center; of course, the two handles 2 can also be hinged by bearings.

[0022] The two handles 2 have several anti-slip grooves evenly distributed along their length, such as... Figure 1 and Figure 4 As shown, the anti-slip groove is used to increase the friction between the doctor's hand and the handle 2, preventing the handle 2 from slipping during the operation, so as to ensure surgical safety and improve operating comfort;

[0023] To elaborate further, such as Figure 1 and Figure 3 As shown, this embodiment preferably includes two spring plates 4, which are arc-shaped. One end of each spring plate 4 is fixed to one of the two handles 2, and the unfixed ends of the two spring plates 4 are hinged together. Figure 1 As shown, the openings of the two spring plates 4 face each other, and one end of each spring plate 4 is fixed to the swing end of the handle 2. The two ends are hinged together by a hinge. Therefore, when the two handles 2 swing to close, the spring plates 4 will bend and deform. When the two handles 2 need to open, the two stops 3 push the two handles 2 to swing open by their own restoring ability, so as to facilitate the doctor to quickly perform the next clamping or adjust the clamping position without the doctor having to manually swing open the two handles 2. The whole solution constitutes a driving component for pushing the two handles 2 to open. Of course, the driving component can also be a spring, with the spring located between the two handles 2. The two ends of the spring are fixed to the swing ends of the two handles 2, and the elasticity of the spring pushes the two handles 2 to swing open.

[0024] To elaborate further, such as Figure 1 , Figure 3 and Figure 4As shown, this embodiment preferably includes a positioning plate 5, which has an "L"-shaped structure. A horizontal section of the positioning plate 5 is fixed to one of the handles 2. A plurality of locking blocks 6 are evenly fixed along the length of the vertical section of the positioning plate 5. A stop block 3 for blocking the locking blocks 6 is fixed to the other handle 2. The stop block 3 has an inclined surface at the corner facing the locking blocks 6. The vertical section of the positioning plate 5 has an arc-shaped structure, and the arc-shaped section of the positioning plate 5 coincides with the hinge point of the two handles 2. This allows the positioning plate 5 to move with the handles... 2. During swinging, the vertical section of the positioning plate 5 will not misalign with the stop block 3, thus ensuring that the locking block 6 can align and fit with the stop block 3 when it moves to the designated position. In use, the swinging of the two handles 2 will respectively drive the positioning plate 5 and the stop block 3 to swing. When the locking block 6 on the positioning plate 5 contacts the inclined surface on the stop block 3, the positioning plate 5 will be slightly bent and deformed by the push of the stop block 3, causing the locking block 6 to pass through the stop block 3. The locking block 6 and the top of the stop block 3 block the movement, thereby locking the two handles 2 that have swung closed. Figure 3 As shown, when the two handles 2 swing to different degrees, the stop block 3 blocks the locking block 6 at different positions; the whole solution constitutes a locking component for locking the two handles 2 that are swinging and closed; of course, the locking component can also use a movable sleeve, which can be made of leather or soft rubber. When the two handles 2 swing to the required angle, the movable sleeve is pushed towards the swing end of the handle 2 until the movable sleeve can no longer move, thereby locking the two closed handles 2 through the movable sleeve.

[0025] The hinged ends of the two handles 2 are fixed with clamping parts 1 for clamping pterygium blood vessels. When the doctor closes the two handles 2, the clamping parts 1 on the hinged ends of the two handles 2 will close to each other, and the body of the pterygium will be clamped by the two closed clamping parts 1 to clamp the pterygium blood vessels.

[0026] The clamping part 1 includes two arc-shaped clamping rods 1.1, with a straight clamping rod 1.3 fixed between one end of each arc-shaped clamping rod 1.1. A support rod 1.2 is fixed to the other end of one of the arc-shaped clamping rods 1.1, and the support rod 1.2 is fixed to the handle 2. The clamping part 1 is hook-shaped in general. During the operation, the doctor inserts one of the clamping parts 1 into the bottom of the pterygium from the opening on the side where the support rod 1.2 is not fixed, so that the clamping part 1 is located in the gap between the eyeball and the pterygium. The two curved clamping rods 1.1 are aligned with the fascia and blood vessels on the upper and lower sides of the pterygium body, respectively, while the straight clamping rod 1.3 is aligned with the fascia and blood vessels near the caruncle. When the two clamping parts 1 are closed, the two curved clamping rods 1.1 clamp the fascia and blood vessels on the upper and lower sides of the pterygium body, respectively, while the straight clamping rod 1.3 clamps the fascia and blood vessels near the caruncle. This clamps the blood vessels of the entire pterygium resection site at once. By applying slight pressure to the fascia and blood vessels, the pterygium is controlled... Bleeding is controlled, resulting in a clearer surgical field and facilitating subsequent procedures. The opening on one side of the clamping part 1 allows the curved clamping rod 1.1 and the straight clamping rod 1.3 to easily penetrate the base of the pterygium during surgery. The hook-shaped clamping part 1 is small in size and its shape is more suitable for the narrow surgical area of ​​the eye, making it easier to clamp the pterygium without needing to adjust its position or perform multiple clamping operations. This saves surgical time, speeds up the surgical process, and makes the patient more comfortable during the procedure. During the removal of the pterygium... In this procedure, pterygium is treated by "clamping and then cutting." During removal, the doctor will cut along the clamping marks on the pterygium. The two curved clamping rods 1.1 and the straight clamping rod 1.3 are combined to form a boat-shaped structure, which allows the two curved clamping rods 1.1 and the straight clamping rod 1.3 to better adapt to the shape of the caruncle area when clamping. The clamping marks on the pterygium will also be boat-shaped, allowing the hyperplastic fascia to be completely removed along the boat-shaped marks. Moreover, removing the pterygium along the boat-shaped clamping marks results in a more aesthetically pleasing result.

[0027] The clamping part 1 gradually tapers from the handle 2 to its end, as shown in the image. Figure 2 As shown, the clamping part extends towards the end and tapers, making it easier to insert it into the bottom of the pterygium during the operation, which makes the surgeon's operation more convenient.

[0028] The clamping part 1 and the handle 2 are made of stainless steel such as 2Cr13, 20Cr13, 2Cr13Mo, and 12Cr13. These materials have good hardness and corrosion resistance, and are suitable for making medical devices that need to withstand certain pressure and friction, so as to ensure their toughness during use and facilitate postoperative disinfection and wiping by medical staff.

[0029] In actual use, the doctor inserts one of the clamping parts 1 into the bottom of the pterygium through the opening on one side where the support rod 1.2 is not fixed, positioning the clamping part 1 in the gap between the eyeball and the pterygium. The two curved clamping rods 1.1 are aligned with the fascia and blood vessels on the upper and lower sides of the pterygium body, respectively, while the straight clamping rod 1.3 is aligned with the fascia and blood vessels near the caruncle. The doctor then presses the two handles 2, causing them to swing and close the two clamping parts 1. This allows the two curved clamping rods 1.1 to clamp the fascia and blood vessels on the upper and lower sides of the pterygium body, while the straight clamping rod 1.3 clamps the fascia and blood vessels near the caruncle, applying slight pressure to the pterygium fascia and blood vessels. During the closure process, the swing angle of the two handles 2 is locked by the cooperation of the locking block 6 and the stop block 3, keeping the clamping part 1 in a clamping state on the pterygium for 5-10 seconds. Then, the two handles 2 are slightly twisted to the side, causing the locking block 6 and the stop block 3 to disengage. The two handles 2 will then open under the push of the spring plate 4, and the two clamping parts 1 will release their clamping on the pterygium. The hook-shaped clamping part 1 is small in size and its shape is more suitable for the narrow surgical area of ​​the eye, making it easier to clamp the pterygium. There is no need to adjust the position and clamp repeatedly, saving surgical time, speeding up the surgical process, and making the surgical process more comfortable for the patient. When the doctor removes the pterygium along the clamping marks later, the hyperplastic fascia can be removed more thoroughly, and the removal of the clamping marks can be more aesthetically pleasing.

Claims

1. A forceps for use in pterygium excision, comprising two handles (2), characterized in that: Two handles (2) are hinged together at one end. A drive assembly for pushing the two handles (2) to swing open is provided between the two handles (2). A locking assembly for locking the two handles (2) to swing closed is provided between the two handles (2). A clamping part (1) for clamping pterygium blood vessels is fixed on the hinged end of the two handles (2). The clamping part (1) includes two arc-shaped clamping rods (1.1). A straight clamping rod (1.3) is fixed between the opposite ends of the two arc-shaped clamping rods (1.1). A support rod (1.2) is fixed on the other end of one of the arc-shaped clamping rods (1.1). The support rod (1.2) is fixed on the handle (2). The clamping part (1) is hook-shaped as a whole.

2. The forceps for pterygium excision according to claim 1, characterized in that: The drive assembly includes two spring plates (4), which are arc-shaped. One end of each spring plate (4) is fixed to one of the two handles (2), and the unfixed ends of the two spring plates (4) are hinged to each other.

3. The forceps for pterygium excision according to claim 1, characterized in that: The locking assembly includes a positioning plate (5), which has an "L" shaped structure. A horizontal section of the positioning plate (5) is fixed to one of the handles (2). A number of locking blocks (6) are evenly fixed along the length of the vertical section of the positioning plate (5). A stop block (3) for blocking the locking blocks (6) is fixed on the other handle (2). The stop block (3) has an inclined surface at the corner facing the locking block (6).

4. The forceps for pterygium excision according to claim 3, characterized in that: The vertical section of the positioning plate (5) has an arc-shaped structure.

5. The forceps for pterygium excision according to claim 1, characterized in that: Several anti-slip grooves are evenly provided along the length of the two handles (2).

6. The forceps for pterygium excision according to claim 1, characterized in that: The clamping part (1) gradually tapers from the handle (2) to the end.

7. The forceps for pterygium excision according to claim 1, characterized in that: The clamping part (1) and the handle (2) are made of rust-resistant material.

Images