Trabecula incision knife with built-in chamber angle mirror

Abstract

The trabecular incision knife with the built-in chamber angle mirror comprises a pair of handles and a pair of operating heads arranged at the front ends of the handles, the handles are movably hinged through a connecting part, and the hinged point is located at the joint of the handles and the operating heads corresponding to the front ends of the handles. The pair of operation heads can be opened or closed by taking a hinge point as an axis; and a trabecular incision knife part and a specular reflection part are respectively arranged at the end parts of the pair of operating heads. According to the utility model, the built-in chamber angle mirror and the trabecular incision knife are combined for use, the knife and the mirror are integrated, the operation can be completed under direct vision only by making a single corneal incision with the width of 2.5-3mm, the chamber angle can be observed without using the chamber angle mirror, and the chamber angle incision or the trabecular incision can be completed under the direct vision; the utility model has the advantages of convenience in use, high operation safety, short operation time and short learning curve of a doctor, improves the working efficiency, relieves the pain of a patient, and reduces the occurrence rate of operative complications.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a trabeculotomy knife with a built-in gonioscope. Background Art

[0002] At present, the trabeculotomy surgery in China is to separate the iris that is anteriorly adhered to the trabecular meshwork under the gonioscope, insert the trabeculotomy knife into the Scher canal, and make a circular incision along the Scher canal. During the operation, it is necessary to place a gonioscope on the patient's cornea, adjust the angle of the surgical microscope to observe the chamber angle, insert the trabeculotomy knife into the Scher canal, and make a circular incision along the Scher canal. However, this trabeculotomy instrument and method have the following shortcomings:

[0003] (1) It is necessary to place a goniometer on the patient's cornea and the patient must cooperate and adjust the angle of the surgical microscope, which is a complicated operation.

[0004] (2) The anterior chamber angle needs to be observed through a gonioscope. During this process, the position where the trabeculotomy knife enters the anterior chamber cannot be observed, which poses a risk of damaging intraocular structures such as the corneal endothelium and iris.

[0005] (3) Existing trabeculotomy instruments can only cut the Schirmer canal along a fixed direction. When cutting in another direction, the direction needs to be adjusted or the instrument needs to be replaced, which is a complicated process.

[0006] Therefore, there is an urgent need to design a device that can help to complete the internal trabeculotomy surgery efficiently, conveniently, accurately and safely. Utility Model Content

[0007] In order to overcome the deficiencies of the above-mentioned technologies, the purpose of the present invention is to provide a trabeculotomy knife with a built-in gonioscope for internal trabeculotomy surgery, which makes the surgery more convenient, accurate and less damaging.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A trabeculotomy knife with a built-in gonioscope comprises a pair of handles and a pair of operating heads arranged at the front ends of the pair of handles, wherein the pair of handles are movably hinged via a connecting portion, wherein the hinge point is located at the junction of the handles and the operating heads corresponding to the front ends thereof, and the pair of operating heads can be opened or closed with the hinge point as the axis; the characteristic is that the ends of the pair of operating heads are respectively provided with a trabeculotomy knife portion and a mirror reflection portion.

[0010] Preferably, the handle and the operating head are integrally formed.

[0011] Preferably, the operating head includes an operating head extension portion, which is a slender and smooth arc-shaped structure. A pair of operating head extension portions can be opened or closed under the drive of a pair of handles; the ends of the pair of operating head extension portions are respectively provided with the small beam cutting knife portion and the mirror reflection portion.

[0012] Preferably, the inner side of the trabeculectomy knife portion is fixedly connected to its corresponding operating head extension portion to form a T-shaped structure; the outer side of the trabeculectomy knife portion is arc-shaped, and its curvature matches the physiological structure of the Scheiner canal; and both sides of the trabeculectomy knife portion have sharp edges.

[0013] Preferably, the mirror reflection portion is a smooth mirror surface, and has a rounded rectangular structure or a circular structure.

[0014] Preferably, the handle consists of a handle portion and a handle extension portion; the front end of the handle portion is connected to the operating head.

[0015] Preferably, openings and clamping strips are respectively provided at positions corresponding to one end of the two handle extensions away from the handle portion; a baffle is provided at the end of the clamping strip; the width of the clamping strip is smaller than the width of the opening, and the width of the baffle is larger than the width of the opening; the clamping strip is inserted into the opening, so as to movably clamp the ends of the two handles; the handle extension is an elastic structure, which can be elastically deformed under the action of external force to bring a pair of handles together.

[0016] Preferably, the handle portion has fine stripes for increasing friction.

[0017] Preferably, the handle is an elongated flat structure.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model provides a trabeculotomy knife with a built-in gonioscope for internal trabeculotomy surgery. The built-in gonioscope and the trabeculotomy knife are used in combination. The knife and the gonioscope are integrated. Only a single corneal incision of 2.5-3MM width is required to complete the surgery under direct vision. The angle of the chamber can be observed without the gonioscope. The angle or trabeculotomy can be completed under direct vision, which improves the safety of the surgery. The operating head extension of the utility model is in a duckbill-like arc structure in a fully closed state, which facilitates the instrument to extend into the anterior chamber. The handle of the utility model has fine stripes for increasing the friction when the hand is holding it, making the holding more stable and improving the safety and accuracy of the surgery. The trabeculotomy knife of the utility model can cut the Scherrer canal in two directions without changing the instrument, which improves the efficiency of the surgery.

[0020] Therefore, the utility model has the advantages of easy use, high surgical safety, short operation time, and short learning curve for doctors, thereby improving work efficiency, alleviating the pain of patients, and reducing the incidence of surgical complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereoscopic diagram of a trabeculotomy knife with a built-in gonioscope of the utility model;

[0022] Figure 2 yes Figure 1 A front view of

[0023] Figure 3 yes Figure 1 A top view of

[0024] Figure 4 yes Figure 1 Magnified view of the mirror surface and trabeculectomy section;

[0025] Figure 5 yes Figure 4 Top view of the trabeculae cutting section;

[0026] Figure 6 yes Figure 1 A partial enlarged view of the handle extension;

[0027] Figure 7 It is a schematic diagram of the surgical anatomy of the eye;

[0028] Figure 8-Figure 10 The utility model is a schematic diagram of the use of a trabeculotomy knife with a built-in gonioscope.

[0029] The components and regions in the figure are numbered as follows: handle 1 (including handle portion 11, handle extension portion 12), operating head 2 (including operating head extension portion 21, trabeculotomy portion 22, mirror reflection portion 23), connecting portion 3, cornea 4, iris 5, lens 6, trabecular meshwork 7, Scheiner's canal 8, aqueous humor drainage channel 9;

[0030] The handle extension portion 12 includes an opening 121, a clamping strip 122, and a blocking strip 123;

[0031] The trabeculae cutting knife portion 22 includes a sharp edge 221 . DETAILED DESCRIPTION

[0032] In order to better explain the present invention, the main contents of the present invention are further explained below in combination with specific implementation methods, but the contents of the present invention are not limited to the following specific implementation methods.

[0033] like Figure 1-3As shown, a trabeculotomy knife with a built-in gonioscope is provided in the utility model. The trabeculotomy knife is a T-shaped bidirectional trabeculotomy knife. The trabeculotomy knife is made of a non-mirror metal material and includes a pair of handles 1, and a pair of operating heads 2 are fixedly connected to the front ends of the pair of handles 1. The handles 1 and the corresponding operating heads 2 are in an integrally formed structure. The integrally formed structure is easy to manufacture and has low cost.

[0034] A pair of handles 1 are movably hinged through a connecting portion 3, and the hinge point is located at the junction of the handle 1 and the corresponding operating head 2 at the front end thereof, and the pair of operating heads 2 can be opened or closed with the hinge point as the axis. When not in use, the handle 1 and the operating head 2 are both in an open state. When pressure is applied to the handle 1, the two handles 1 can be closed and the two operating heads 2 can be completely closed.

[0035] The handle 1 consists of a handle portion 11 and a handle extension portion 12 .

[0036] The handle portion 11 is used for holding by hand during surgery, and the front end of the handle portion 11 is connected to the operating head 2, and the rear end is connected to the handle extension portion 12. The handle portion 11 is a rigid structure, and has fine stripes on the handle portion 11, which is used to increase the friction when the hand holds it, so that the hand holds the trabeculotomy knife more stably, thereby improving the safety and accuracy of the surgery. The handle portions 11 of the two handles 1 can be movably hinged.

[0037] like Figure 6 As shown, the two handle extensions 12 are provided with openings 121 and clamping strips 122 at positions corresponding to the ends away from the handles 11; the ends of the clamping strips 122 are provided with blocking strips 123, the width of the clamping strips 122 is smaller than the width of the opening 121, and the width of the blocking strips 123 is larger than the width of the opening 121. The clamping strips 122 are inserted into the opening 121 to movably clamp the ends of the two handles 1. The handle extension 12 is an elastic structure. When not in use, the handle extension 12 is an elastic structure, so that the two handles 1 are in an open state; during use, by applying external pressure to the handle extension 12, the handle extension 12 can be elastically deformed and the handles 1 can be relatively closed, and the degree of closing is determined by the size of the external pressure; after use, the combination of the clamping strips 122, the blocking strips 123 and the opening 121 can restore the elastically deformed handles 1 to an open state when no external force is applied.

[0038] The handle 1 is in the shape of a flat strip, which is convenient for holding by hand during surgery. The two handles 1 are arranged opposite to each other. Since the handle extension 12 is an elastic structure, the pair of handles 1 can be moved relative to each other and closed by applying external pressure to the handle portion 11 on the handle 1, thereby driving the operating head extension 21 to close.

[0039] The operation head 2 includes an operation head extension 21, which is a slender and smooth arc-shaped structure, and is used to extend the trabeculectomy knife portion 22 and the mirror reflection portion 23 at the end of the operation head extension 21 into the anterior chamber of the eye. The operation head extension 21 is a duckbill-like arc-shaped structure in a fully closed state, which facilitates the operation head extension 21 to pass through the corneal 4 incision, enter the anterior chamber of the eye, and extend to the root of the iris 5 on the opposite side during the operation.

[0040] The end portions of the pair of operating head extension portions 21 are respectively provided with a small beam cutting knife portion 22 and a mirror reflecting portion 23 .

[0041] like Figure 4 and Figure 5 As shown, the inner side of the trabeculae cutting knife portion 22 is fixedly connected to the corresponding operating head extension portion 21 to form a T-shaped structure. The outer side of the trabeculae cutting knife portion 22 is arc-shaped, and its arc is close to the physiological structure of the Schirmer canal 8, and the arc length is 1.5 mm. Both sides of the trabeculae cutting knife portion 22 have sharp edges 221, which can be used to cut the Schirmer canal 8 from both sides. The trabeculae cutting knife portion 22 and the operating head extension portion 21 are preferably an integrally formed structure.

[0042] The mirror reflection part 23 is a smooth mirror surface, and has a rounded rectangular structure or a circular structure. Figure 4 As shown, in this specific embodiment, the mirror reflection part 23 is a smooth mirror surface of a rounded rectangular shape of 2mm*3mm, and its edges are all smoothed without obvious edges and corners to prevent damage to the eyes.

[0043] When performing a trabeculotomy, the elastic handle extension 12 of the T-shaped bidirectional trabeculotomy knife of the utility model is clamped to close the operating head extension 21, so that the operating head extension 21 is extended into the anterior chamber of the eye through the corneal incision 4, and the handle extension 12 changes from hard to elastic, making the control of the T-shaped bidirectional trabeculotomy knife more sensitive; the handle 11 has fine stripes that increase friction to prevent the instrument from slipping during the operation, thereby improving the safety of the operation; the operating head extension 21 has an arc shape in a fully closed state. It is close to the physiological structure of the human body and is more convenient for doctors to perform surgical operations; the trabeculectomy knife portion 22 is a "T"-shaped blade with sharp edges and an arc, and its arc is close to the physiological structure of the Schreiber canal 8. The Schreiber canal 8 can be cut in two directions under the condition of observing the chamber angle with the assistance of the mirror reflection portion 23, and the "T"-shaped structure can avoid damaging the outer wall of the Schreiber canal 8; the mirror reflection portion 23 is a smooth mirror surface with rounded corners, and the chamber angle can be observed through this smooth mirror reflection. After the observation is completed, the adhesion chamber angle can be directly separated through this mirror reflection portion 23.

[0044] Specifically, when performing trabeculotomy, such as Figure 8 As shown, the T-shaped bidirectional trabeculotomy knife of the utility model is clamped to extend into the anterior chamber of the eye through the corneal incision 4, as shown in FIG. Fig. 9 As shown, under direct microscope observation, the trabeculotomy blade 22 and the mirror reflection part 23 are inserted into the vicinity of the chamber angle, the handle part 11 is slightly loosened, and the operating head extension part 21 is slightly opened to prevent the trabeculotomy blade 22 from blocking the field of view of the mirror reflection part 23 in the eye, and the mirror reflection part 23 is adjusted to observe the chamber angle. If the patient has the situation of chamber angle adhesion, the mirror reflection part 23 can be directly used to separate the iris 5 that is anteriorly adhered to the trabecular meshwork 7, as shown in FIG. Fig.10 As shown, the chamber angle and the trabeculectomy knife portion 22 are observed through the mirror reflection portion 23, and the opening angle of the operating head extension portion 21 is adjusted to make the trabeculectomy knife portion 22 close to the Schirmer canal 8, and the sharp blade 221 of the trabeculectomy knife portion 22 is inserted into the Schirmer canal 8, and the trabeculectomy operation is completed by cutting along the Schirmer canal 8 to both sides.

[0045] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

[0046] Other parts not described belong to the prior art.

Claims

1. A trabeculotomy knife with a built-in gonioscope, comprising a pair of handles (1) and a pair of operating heads (2) arranged at the front ends of the pair of handles (1), wherein the pair of handles (1) are movably hinged via a connecting portion (3), wherein the hinge point is located at the junction of the handles (1) and the operating heads (2) corresponding to the front ends thereof, and the pair of operating heads (2) can be opened or closed with the hinge point as the axis; characterized in that: The ends of the pair of operating heads (2) are respectively provided with a small beam cutting knife portion (22) and a mirror reflection portion (23).

2. The trabeculotomy knife with built-in gonioscope according to claim 1, characterized in that: The handle (1) and the operating head (2) are in an integrally formed structure.

3. The trabeculotomy knife with built-in gonioscope according to claim 1, characterized in that: The operating head (2) comprises an operating head extension part (21), the operating head extension part (21) is a slender and smooth arc-shaped structure, and a pair of operating head extension parts (21) can be opened or closed under the drive of a pair of handles (1); the ends of the pair of operating head extension parts (21) are respectively provided with the small beam cutting knife part (22) and the mirror reflection part (23).

4. The trabeculotomy knife with built-in gonioscope according to claim 3, characterized in that: The inner side of the trabeculectomy knife portion (22) is fixedly connected to the corresponding operating head extension portion (21) to form a T-shaped structure; the outer side of the trabeculectomy knife portion (22) is arc-shaped, and its arc matches the physiological structure of the Scheiner canal (8); and both side edges of the trabeculectomy knife portion (22) have sharp blades (221).

5. The trabeculotomy knife with built-in gonioscope according to claim 1, characterized in that: The mirror reflection part (23) is a smooth mirror surface and has a rounded rectangular structure or a circular structure.

6. The trabeculotomy knife with built-in gonioscope according to any one of claims 1 to 5, characterized in that: The handle (1) is composed of a handle portion (11) and a handle extension portion (12); the front end of the handle portion (11) is connected to the operating head (2).

7. The trabeculotomy knife with built-in gonioscope according to claim 6, characterized in that: An opening (121) and a clamping strip (122) are respectively arranged at positions corresponding to one end of the two handle extensions (12) away from the handle portion (11); a stopper strip (123) is arranged at the end of the clamping strip (122); the width of the clamping strip (122) is smaller than the width of the opening (121), and the width of the stopper strip (123) is larger than the width of the opening (121); the clamping strip (122) is inserted into the opening (121), so that the ends of the two handles (1) can be movably clamped; the handle extension (12) is an elastic structure, which can be elastically deformed under the action of external force to close the pair of handles (1).

8. The trabeculotomy knife with built-in gonioscope according to claim 6, characterized in that: The handle portion (11) is provided with fine stripes for increasing friction.

9. The trabeculotomy knife with built-in gonioscope according to claim 8, characterized in that: The handle (1) is a long flat structure.

Images