Thread leading device in T-shaped groove eye
By designing the T-slot intraocular lead, the design of the T-slot and flat needle body is used to solve the complex operation of the existing intraocular tissue suture tool, the rapid and safe suture of sutures is achieved, and the risk of eye damage is reduced.
Patent Information
- Application Number
- CN202411327361.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-13
AI Technical Summary
The existing intraocular tissue suture tools have complex operation, long learning cycle, and high requirements for hand-eye coordination, which can easily cause additional eye damage and lack minimally invasive, simple and efficient tools.
A T-slot inner eye leader is designed, including a handle and a head, with a solid metal needle-shaped head, sharp front end and a T-slot for quick access and exiting sutures, the handle can be integrated with the head or through a connecting piece Connection is easy to replace. The needle body is flat or cylindrical, suitable for different types of wires. The method of use is to alternately operate the needle into the longitudinal and transverse directions to form a suture tunnel.
The sutures are quickly entering and exiting the tissues in the eye, with little trauma, fast sutures and good results, simplifying the operation process and reducing the risk of damage to the eyeball.
Smart Images
Figure CN119112499A_ABST
Abstract
Description
Technical Field
[0001] The present invention is an ophthalmic surgical instrument, specifically a T-slot intraocular thread guide, which can also be called an ophthalmic surgical T-slot thread guide suture needle. It is used to pull the suture into and out of the eyeball or through the iris and other intraocular tissues when suturing and fixing intraocular tissues (such as artificial lens suspension, iris rupture repair, pupil molding, etc.). Background Art
[0002] Intraocular tissue suturing, such as artificial lens suspension, iris rupture repair, pupil shaping, etc., because the sutures need to be repeatedly inserted and removed from the eyeball, the existing methods, such as long needle penetration, hollow needle guidance, and perforated needle guidance, are complex intraocular operations when hooking and unhooking the wires, with a long learning cycle, high hand-eye coordination requirements, and difficult implementation, which can easily cause additional damage to the eyeball. The industry urgently needs a minimally invasive, simple, and efficient tool to overcome these problems. Summary of the invention
[0003] The purpose of the present invention is to address the above problems and to propose a T-slot intraocular thread guide that can allow sutures to quickly enter and exit intraocular tissues during ophthalmic surgery to suture injuries, with minimal trauma, fast suturing and good effects, thereby overcoming the shortcomings of the prior art.
[0004] The T-slot intraocular wire guide proposed in the present invention is characterized in that it consists of a handle and a head, the head is fixed on the handle, the head is in the shape of a solid metal needle, the needle body is flat or cylindrical, the front end is sharp, and it is convenient to puncture through the eyeball or intraocular tissue. There is a T-shaped slot at the tip, and the slot leads to the outside for hooking or pushing and pulling the wire.
[0005] The head and the handle can be made into one piece, or can be connected by a connecting piece to facilitate the replacement of the head.
[0006] When the head is connected to the handle through a connecting piece, a universal bayonet connected to a universal holding handle is provided at the rear thereof to facilitate disassembly and replacement.
[0007] The handle is reusable and is L-shaped or straight.
[0008] The connecting piece is a latch or a screw.
[0009] When connected with the bayonet teeth, there is a slot at the contact point between the bottom of the handle and the head to prevent the head from swinging.
[0010] The cross section of the portion of the head that contacts the handle is rectangular, the remaining portion is needle-knife-shaped, and the T-shaped groove is a hollow groove.
[0011] The head can be made into specifications suitable for various types of wires and packaged in a set in a sterile small box for easy selection.
[0012] The head is made of metal such as stainless steel or titanium alloy, and the handle is made of plastic or metal.
[0013] A method for using a T-slot intraocular wire guide, characterized by the following steps: A method for using a T-slot intraocular wire guide, characterized by the following steps: (1) Hang the suture wire into the T-slot, insert and remove the needle longitudinally along one side of the suture object, withdraw the wire from the T-slot and leave it outside the needle eye, and then withdraw the needle body; (2) At the first needle exit point, turn the needle 90 degrees with the thread to insert the needle horizontally, and then exit the needle horizontally on the other side of the suture object, leaving the thread outside the needle exit port. After the needle body exits the suture object on that side, it moves back to the top of the suture object and hooks the thread into the T-shaped groove. The needle body and thread completely exit the eye of the needle, and the thread is left outside the eye of the needle. (3) Repeat the first longitudinal needle insertion operation at the first longitudinal needle exit point to complete the second longitudinal needle insertion with thread. After the needle is exited, leave the thread outside the needle exit eye and withdraw the needle body. (4) Repeat the first transverse needling operation at the exit point of the second longitudinal needling to complete the second transverse needling operation; (5) repeating steps (3) and (4) until a needle tunnel is formed on one side of the suture object and a wire is connected to the other side of the suture object; (6) Pull the wires tight at both ends, sew the two sides of the object to be sutured together completely, and then cut off the excess thread ends.
[0014] The method for using the T-slot intraocular thread guide preferably uses a flat needle body with a width of less than 2 mm and a thickness of less than 0.5 mm.
[0015] The invention is characterized by a simple structure, convenient replacement of the needle body, a flat needle body with a cutting edge, convenient and quick entry and exit of the eyeball tissue, hooking and pushing and pulling of the wire, minimal trauma to the eyeball tissue, fast suturing and good effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is the front view of the present invention.
[0017] Figure 2 It is a top view of the present invention.
[0018] Figure 3 It is the view of the present invention.
[0019] Figure 4 It is a front view of the head (needle body) of the present invention.
[0020] Figure 5 yes Figure 4 Top view.
[0021] Figure 6 yes Figure 4 Left view.
[0022] Figure 7 This is another front view of the head (needle body).
[0023] Figure 8 yes Figure 7 Top view.
[0024] Fig. 9 This is the front view of the L-shaped handle.
[0025] Fig.10 yes Fig. 9 Left view.
[0026] Fig.11 yes Fig. 9 Bottom view (partially omitted and enlarged).
[0027] Fig.12 This is the AA cross-sectional view when the connecting piece is a latch tooth (partially omitted).
[0028] Fig.13 It is a schematic diagram of the structure of the eyeball that can cause eye injury.
[0029] Fig.14 It is a schematic diagram of longitudinal needle insertion in the method of use of the present invention.
[0030] Fig.15 It is a schematic diagram of lateral needle insertion in the method of use of the present invention.
[0031] Fig.16 It is a schematic diagram of the needle withdrawal and thread hooking of the transverse needle advance method of the present invention.
[0032] Fig.17 It is a schematic diagram of the distribution of the wires after the longitudinal and transverse needle insertion operations are repeated and alternatingly completed in the method of using the present invention.
[0033] Fig.18 It is a schematic diagram of the method of using the present invention when the two ends of the wire are tightened and sutured.
[0034] Fig.19 It is a schematic diagram of the state after suturing is completed in the method of use of the present invention.
[0035] Figure 1-19 The labels of the components are as follows: 1-handle; 2-connector; 3-head (also called needle body); 4-T-slot; 5-handle slot; 6-sclera; 7-pupil; 8-iris; 9-corneal limbus; 10-iris detachment; 11-suture; 12-tunnel inlet; 13-tunnel outlet; 101-internal thread; 301 connecting hole. DETAILED DESCRIPTION
[0036] The present invention is further described below in conjunction with the accompanying drawings.
[0037] like Figure 1-12 As shown, the T-slot eyelet thread guide of the present invention is composed of two parts, namely, a handle 1 and a head 3 connected together. The handle can be an oblique L-shape, or a straight bar shape, and the handle is made of plastic or metal material and can be used repeatedly. The head is a key part of the present invention, made of metal materials such as stainless steel, and is generally disposable to avoid cross infection. The end portion of the head is a sharp blade, and the T-slot 4 is opened beside the blade, passing through the needle body to form an open T-slot eye to facilitate the entry and exit of the suture 11. After the suture is inserted into the T-slot, the suture can be introduced into the tissue when moving forward, and the suture can be pulled out of the tissue when retreating, so that the suture can be pushed, pulled, and entered and exited easily.
[0038] As mentioned above, the head is in the shape of a flat needle knife, or in the shape of a cylindrical needle, with a cutting edge at the front end for puncture. A connecting hole 301 is provided at the rear half of the head for connection with the handle. The tail end of the head can be appropriately enlarged (e.g. Figure 4 As shown), it can also be made into a straight strip (as Figure 7 as shown).
[0039] The head is a metal part, made of stainless steel in various models, and packaged in a set in a packaging box. Each model of the head (needle body) is individually packaged in a plastic bag and sterilized. It is used once after opening the package to avoid cross infection. It can also be packaged separately for each model.
[0040] The handle is a hand-held part, made of plastic or metal, and can be reused. The part that connects with the head is a flat surface or a handle slot 5 (such as Fig.12 As shown in the figure, the function of the handle slot is to limit the head in the slot to prevent it from swinging. When the slot design is adopted, the connecting member 2 is a buckle (or a tooth) made integral with the handle. The head can be fixed in the slot after being pressed into the slot, and can be pried out when replaced.
[0041] The connecting member may also be a screw, connected to the handle via the internal thread 101. The number of screws may be 1-2.
[0042] The rest of the head is as described above.
[0043] Figure 13-19 Schematic diagram of the process of suturing the iris rupture part according to the present invention. Fig.13 As shown, when iridotomy 10 occurs, the method for using the wire guide of the present invention is as follows: Figure 14-19 The steps are: (1) Hang the suture wire 11 into the T-slot 4, insert and remove the needle longitudinally along the tunnel entry 12 on one side of the suture object (sclera 6), withdraw the wire from the T-slot and leave it outside the needle eye, and withdraw the needle body 3; (2) At the first needle exit point, turn the needle 90 degrees with the thread to perform a lateral needle insertion, and exit the needle across the other side (iris 8) of the suture object, leaving the thread outside the needle exit port. After the needle body exits the suture object (iris 8) on that side, it is re-entered above the suture object and the thread is hooked into the T-shaped groove. The needle body and thread are completely exited from the eye of the lateral needle insertion, and the thread is left outside the eye of the needle. (3) Repeat the first longitudinal needle insertion operation at the first longitudinal needle exit point to complete the second longitudinal needle insertion with thread. After the needle is exited, leave the thread outside the needle exit eye and withdraw the needle body. (4) Repeat the first transverse needling operation at the exit point of the second longitudinal needling to complete the second transverse needling operation; (5) repeating steps (3) and (4) until a needle tunnel is formed on one side of the suture object (sclera 6) and a wire is connected to the other side of the suture object (iris); (6) Pull the wires at both ends tightly, sew the two sides of the sutured object together completely, and then cut off the excess thread ends at both ends. The suture operation of iridotomy 10 is completed.
[0044] The above steps can be interpreted alternatively as: (1) Hang the suture wire 11 into the T-slot 4, and insert and remove the needle longitudinally along one side of the object to be sutured (i.e., 2 mm away from the corner of the iris rupture 10, 2 mm outside the corresponding corneal limbus, parallel to the corneal limbus, to make a scleral 6 interlayer tunnel with a length of 3 mm). After the needle is inserted and removed, the wire 11 is withdrawn from the T-slot and left outside the needle eye, and the needle body is withdrawn; (2) At the first needle exit point, turn the needle 90 degrees with the thread to perform a lateral needle insertion (vertically penetrate the sclera and enter the eyeball), and then remove the needle from the other side of the suture object (i.e., penetrate the iris from the back to the front at 0.5 mm inside the corresponding iris 8 from the broken edge), leaving the thread outside the needle exit (i.e., the front surface of the iris). After the needle body exits the suture object (i.e., the iris) on that side, (without passing through the iris) it is re-entered to the top of the suture object (the front surface of the iris) and the thread is hung in the T-slot. The needle body with the thread is completely withdrawn from the needle eye (i.e., outside the eyeball wall) where the needle was inserted laterally, and the thread is left outside the needle eye. (3) Repeat the first longitudinal (scleral tunnel) needle insertion operation at the first longitudinal (scleral tunnel) needle exit point (towards the other corner of the iridotomy) (scleral tunnel length 1.5 mm) to complete the second longitudinal needle insertion with wire. After the needle is removed, leave the wire outside the needle exit hole and withdraw the needle. (4) Repeat the first transverse needling operation at the exit point of the second longitudinal needling to complete the second transverse needling operation; (5) Repeat steps (3) and (4) until a needle tunnel is formed on one side of the suture object and a wire is connected on the other side of the suture object (the wire exits the eyeball wall about 1-2 mm from the other corner of the iris rupture, and the wire exits the scleral tunnel 3 mm); (6) Pull the wires tight at both ends, sew the two sides of the object to be sutured together completely, and then cut off the excess thread ends.
[0045] The method for using the T-slot intraocular thread guide preferably uses a flat needle body with a width of less than 2 mm and a thickness of less than 0.5 mm.
[0046] The reference numerals for parts or components not mentioned are as described above.
Claims
1. A T-slot eyelet guide, characterized in that It consists of a handle and a head, which is fixed on the handle. The head is in the shape of a solid metal needle. The needle body is flat or cylindrical with a sharp front end, which is convenient for puncturing the eyeball or intraocular tissue. There is a T-shaped slot at the tip, and the slot leads to the outside for hooking or pushing and pulling the wire.
2. The T-slot intraocular wire guide according to claim 1, characterized in that The head and the handle are made into one piece, or connected by a connecting piece, so as to facilitate the replacement of the head.
3. The T-slot intraocular wire guide according to claim 1, characterized in that When the head is connected to the handle through a connecting piece, a bayonet for connecting with a universal holding handle is provided at the rear thereof to facilitate disassembly and replacement.
4. The T-slot intraocular wire guide according to claim 1, characterized in that The handle is reusable and is L-shaped or straight.
5. The T-slot intraocular wire guide according to claim 1, characterized in that The connecting piece is a tooth or a screw.
6. The T-slot intraocular wire guide according to claim 5, characterized in that When connected with the bayonet teeth, there is a slot at the contact point between the bottom of the handle and the head to prevent the head from swinging.
7. The T-slot intraocular wire guide according to claim 1, characterized in that The cross section of the part where the head contacts the handle is rectangular, the rest of the part is needle-knife-shaped, and the T-shaped groove is a hollow groove.
8. The T-slot intraocular wire guide according to claim 1, characterized in that The head can be made into specifications suitable for various types of wires and packaged in a sterile small box for easy selection. The head is made of stainless steel or titanium alloy, and the handle is made of plastic or metal.
9. The method for using the T-slot intraocular wire guide according to any one of claims 1 to 8, characterized in that The steps are as follows: (1) Hang the suture wire into the T-slot, insert and remove the needle longitudinally along one side of the suture object, withdraw the wire from the T-slot and leave it outside the needle eye, and then withdraw the needle body; (2) At the first needle exit point, turn the needle 90 degrees with the thread to insert the needle horizontally, and then exit the needle horizontally on the other side of the suture object, leaving the thread outside the needle exit port. After the needle body exits the suture object on that side, it moves back to the top of the suture object and hooks the thread into the T-shaped groove. The needle body and thread completely exit the eye of the needle, and the thread is left outside the eye of the needle. (3) Repeat the first longitudinal needle insertion operation at the first longitudinal needle exit point to complete the second longitudinal needle insertion with thread. After the needle is exited, leave the thread outside the needle exit eye and withdraw the needle body. (4) Repeat the first transverse needling operation at the exit point of the second longitudinal needling to complete the second transverse needling operation; (5) repeating steps (3) and (4) until a needle tunnel is formed on one side of the suture object and a wire is connected to the other side of the suture object; (6) Pull the wires tight at both ends, sew the two sides of the object to be sutured together completely, and then cut off the excess thread ends.
10. The method for using the T-slot intraocular thread guide according to claim 9, characterized in that When using a T-slot intraocular guide, it is preferred to use a flat needle body with a width of less than 2 mm and a thickness of less than 0.5 mm.