Ultrasound handle and attached disposable suction head

Abstract

The present invention discloses a phacoemulsification handle and an attached disposable suction head thereof. The phacoemulsification handle attached disposable suction head is a blind tube structure with one end closed and the other end open as a whole. The end with the closed tube mouth forms a suction part, and the other end with the tube mouth forms a fixed part; the fixed part is used to be inserted into the suction hole of the phacoemulsification needle, and a limiting part protruding radially outward is provided between the suction part and the fixed part; a suction port is provided on the tube wall of the suction part, and the suction port is connected with the tube mouth of the fixed part through an internal tube cavity. By using the phacoemulsification handle attached disposable suction head, the operation time can be significantly shortened, the risk of surgical infection can be reduced, and complications such as posterior capsule rupture can be avoided, thereby improving the safety of cataract surgery and ensuring the treatment and postoperative recovery effects of cataract surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic surgical instruments, in particular to an additional disposable suction head for installation on a needle of a phacoemulsification handle during cataract surgery. The present invention also relates to a phacoemulsification handle used in conjunction with the additional disposable suction head. Background Art

[0002] Cataract is the most common blinding eye disease in the world. Phacoemulsification cataract extraction combined with intraocular lens implantation is currently the main method for treating cataracts. A more routine operation usually includes: main corneal incision → lateral corneal incision → continuous manual circular capsulorhexis → lens nucleus chopping → lens nucleus emulsification extraction → capsular bag cleaning before intraocular lens implantation → intraocular lens implantation → completion of intraocular lens implantation.

[0003] During the operation, an ultrasonic emulsification handle equipped with a phacoemulsification needle (i.e., phacoemulsification handle) is needed to remove the nuclear mass of the cloudy lens through ultrasonic emulsification. After that, an irrigation and suction handle equipped with an injection and suction probe (i.e., injection and suction handle) is used to remove the residual lens cortex. After the artificial lens is implanted, the injection and suction handle is also used to remove the viscoelastic agent in the eye.

[0004] Existing injection and suction handles are mainly divided into two types: one-handed and two-handed. The one-handed injection and suction handle is a single handle with irrigation and injection and suction coaxial. The irrigation is a silicone tube with a side opening around the front section of the suction needle, which enters the eye for injection and suction through the same main incision; the two-handed injection and suction handle has two separate tubes for irrigation and injection and suction, which enter the eye through two corneal limbal side incisions for injection and suction respectively.

[0005] In traditional phacoemulsification cataract extraction surgery, the operation of removing the lens cortex by injection and suction after the completion of nuclear emulsification must be replaced by the injection and suction handle. This operation requires the reconnection of the injection and suction pipes, that is, the irrigation pipe and suction pipe are removed from the phacoemulsification handle and then connected to the injection and suction handle. This operation obviously increases the operation time, and the longer the operation time, the greater the risk to the patient. If there are no special circumstances, the shorter the operation time, the better. Moreover, the injection and suction handle is not disposable, and the operation of additional non-disposable tubular instruments entering and exiting the eye also increases the risk of infection. In addition, the suction probe of the injection and suction handle is a metal component, and the posterior capsule rupture complications are prone to occur when the posterior capsule of the lens is accidentally aspirated.

[0006] CN209059645U discloses an injection and suction handle cap for polishing the posterior capsule in cataract phacoemulsification surgery, comprising a sleeve, an injection and suction inlet, a water outlet and a brush body, wherein the front end of the sleeve is bent, an injection and suction inlet is provided at the end of the front end of the sleeve, and water outlets are provided on both sides of the front end of the sleeve; a brush body is provided outside the bend of the front end of the sleeve and between the two water outlets, the water outlet of the injection and suction handle cap corresponds to the water outlet on the injection and suction probe, and the injection and suction inlet on the injection and suction probe protrudes from the injection and suction inlet of the injection and suction handle cap. However, this cap still needs to be sleeved on the injection and suction probe at the front end of the injection and suction handle for use, and cannot fundamentally solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a disposable suction head attached to a phacoemulsification handle. By using the disposable suction head, the operation time can be significantly shortened, the risk of surgical infection can be reduced, and complications such as posterior capsule rupture can be avoided, thereby improving the safety of cataract surgery and ensuring the treatment and postoperative recovery effects of cataract surgery.

[0008] Another object of the present invention is to provide a phacoemulsification handle for use with the additional disposable suction head.

[0009] To achieve the above-mentioned purpose, the present invention provides a disposable suction head attached to a phacoemulsification handle, which is used to be installed at the suction hole of a phacoemulsification needle of the phacoemulsification handle, so that the phacoemulsification handle can be used as an injection and suction handle; the disposable suction head attached to the phacoemulsification handle is a blind tube structure with one end closed and the other end open as a whole, the end with the closed tube mouth forms a suction part, and the other end with the tube mouth forms a fixing part; the fixing part is used to insert into the suction hole of the phacoemulsification needle, and a limiting part protruding radially outward is provided between the suction part and the fixing part; a suction port is provided on the tube wall of the suction part, and the suction port is communicated with the tube mouth of the fixing part through an internal tube cavity.

[0010] Preferably, the suction port comprises a single through hole located on the side wall of the head end of the suction portion or a sieve-shaped hole located on the side wall of the head end of the suction portion.

[0011] Preferably, the through hole has a diameter of 0.3 mm to 1 mm.

[0012] Preferably, the attraction portion is coaxially arranged with the fixing portion or the attraction portion is bent or inclined to one side relative to the fixing portion.

[0013] Preferably, the thickness of the tube wall around the suction port decreases inwardly along the radial direction of the suction port.

[0014] Preferably, a frosted surface is provided on the outer wall of the head end of the suction part.

[0015] Preferably, the attracting portion, the limiting portion and the fixing portion are an integrated structure.

[0016] Preferably, the attraction portion, the limiting portion and the fixing portion are made of silicone, and an inner lining body having a harderness than that of the silicone material is provided in the inner wall or the middle interlayer of the fixing portion.

[0017] Preferably, the end of the fixing portion is provided with a tapered guiding surface for facilitating the insertion of the phacoemulsification needle.

[0018] Preferably, the outer diameter of the limiting portion is smaller than or equal to the outer diameter of the suction hole of the phacoemulsification needle.

[0019] Preferably, the angle between the plane where the limiting portion is located and the central axis of the fixing portion is consistent with the inclined angle of the suction hole of the phacoemulsification needle.

[0020] Preferably, it further includes a mounting sleeve for use therewith; the mounting sleeve is a cylindrical structure, and a groove is provided on the inner wall of its open end. In the mating state, the suction portion of the phacoemulsification handle-attached disposable suction head is hidden inside the mounting sleeve, the limiting portion of the phacoemulsification handle-attached disposable suction head is embedded in the groove, and at least a portion of the fixing portion of the phacoemulsification handle-attached disposable suction head is exposed outwardly from the opening of the mounting sleeve.

[0021] To achieve the above-mentioned other purpose, the present invention provides a phacoemulsification handle, comprising a handle portion, a sleeve arranged at the front end of the handle portion, and a phacoemulsification needle located inside the sleeve, wherein the phacoemulsification needle is a hollow structure, and its front end forming a suction port passes through the sleeve and protrudes outward, and an infusion port is opened on the side wall of the front end of the sleeve, which cooperates with the above-mentioned phacoemulsification handle-attached disposable suction head and is used as an injection and suction handle after the phacoemulsification handle-attached disposable suction head is installed and the ultrasonic operation is stopped.

[0022] The additional disposable suction head provided by the present invention is used to be installed at the suction hole of the phacoemulsification needle during the injection and suction process of cataract surgery, so as to transform the phacoemulsification handle into an injection and suction handle, so that the phacoemulsification handle has the function of the injection and suction handle and can be used as an injection and suction handle. In this way, after emulsification is completed, by adding the additional disposable suction head of the phacoemulsification handle, the phacoemulsification handle can be directly used to remove the lens cortex and viscoelastic agent, and the injection and suction handle is no longer used alone. Since it is not necessary to replace the phacoemulsification handle with the injection and suction handle, it is not necessary to reconnect the injection and suction pipeline, thereby significantly shortening the operation time. Moreover, the additional disposable suction head of the phacoemulsification handle is limited to one-time use. After installation, it will not increase the risk of infection when entering the eye, which helps to reduce the probability of complications, thereby improving the safety of cataract surgery and ensuring the treatment and postoperative recovery effects of cataract surgery.

[0023] The present invention also provides a phacoemulsification handle. Since the phacoemulsification handle-attached disposable suction head has the above-mentioned technical effects, the phacoemulsification handle provided with the phacoemulsification handle-attached disposable suction head should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a phacoemulsification handle;

[0025] Figure 2 for Figure 1 A cross-sectional view of the cuff and phaco needle shown in;

[0026] Figure 3 A front view of a disposable suction head attached to a phacoemulsification handle provided by an embodiment of the present invention;

[0027] Figure 4 for Figure 3 A side view of the phacoemulsification handle with an attached disposable suction tip is shown;

[0028] Figure 5 A schematic diagram of the shape of a suction hole of a phacoemulsification needle according to an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the shape of a suction hole of another phacoemulsification needle according to an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the matching relationship between the disposable suction head attached to the phacoemulsification handle and the phacoemulsification handle according to an embodiment of the present invention;

[0031] Figure 8 This is a partial enlarged view of the front end of the phacoemulsification handle;

[0032] Fig. 9 It is a schematic diagram of the process of inserting the disposable suction head attached to the phacoemulsification handle into the suction hole of the phacoemulsification needle according to an embodiment of the present invention;

[0033] Fig.10 A front view of a second phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention;

[0034] Fig.11 for Fig.10 A side view of the phacoemulsification handle with an attached disposable suction tip is shown;

[0035] Fig.12 A front view of a third phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention;

[0036] Fig.13 A front view of a fourth phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention;

[0037] Fig.14 A front view of a fifth phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention;

[0038] Fig.15 A schematic cross-sectional view of the tube wall thickness around the suction port of an embodiment of the present invention;

[0039] Fig.16 It is a schematic structural diagram of the suction head and the installation sleeve according to an embodiment of the present invention.

[0040] In the figure:

[0041] 1. Handle 2. Sleeve 3. Phacoemulsification needle 4. Suction hole 5. Irrigation hole 6. Phacoemulsification handle with disposable suction head 7. Suction part 8. Tube mouth 9. Fixing part 10. Limiting part 11. Suction port 12. Tube cavity 13. Conical guide surface 14. Lining body 15. Frosted surface 16. Mounting sleeve 17. Groove 18. Irrigation pipeline 19. Suction pipeline 20. Ultrasonic energy line 21. Phacoemulsification handle DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] In this article, the terms "upper, lower, left, right" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0044] Please refer to Figure 1 , Figure 2 , Figure 1 It is a structural schematic diagram of a phacoemulsification handle; Figure 2 for Figure 1 A cross-sectional view of the cuff and phaco needle is shown in FIG.

[0045] As shown in the figure, the phacoemulsification handle 21 is usually mainly composed of a handle portion 1, a sleeve 2 (i.e., a perfused silicone sleeve) arranged at the front end of the handle portion, and a phacoemulsification needle 3 located inside the sleeve 2. The handle portion 1 is made of metal or high-strength ceramic material, and the internal transducer converts electrical energy into mechanical vibration energy, which is then transmitted along the handle to the phacoemulsification needle 3 at the front end.

[0046] The phacoemulsification needle 3 is a hollow structure, and its front end with a suction hole 4 protrudes outward through the sleeve 2. The side wall of the front end of the sleeve 2 is provided with an injection hole 5. In the phacoemulsification working state, the phacoemulsification needle 3 can quickly stretch back and forth to release huge ultrasonic energy to emulsify the lens nucleus, and on the other hand, the emulsified and crushed lens tissue can be sucked out through the suction hole 4 at the end. According to the different angles of the bevel at the end of the suction hole 4, the emulsification needle 3 can be divided into various specifications such as 0°, 15°, 30° and 45° (see Figure 5 , Figure 6 ), select needles of different specifications according to the requirements of the patient's specific conditions. In addition, in addition to the linear phacoemulsification needle 3, it can also be an angled needle, which is more in line with human physiology and more convenient and comfortable in actual operation.

[0047] During operation, the perfusion liquid flows out from the two perfusion holes 5 on both sides of the sleeve 2. The sleeve 2 can keep the perfusion unobstructed on the one hand, and can cool the needle on the other hand. The longer the needle tip is exposed at the front end of the sleeve 2, the higher the phacoemulsification efficiency is, but the cooling effect and safety are slightly worse. The shorter the needle tip is exposed, the better the cooling effect and safety are, but the phacoemulsification efficiency is lower.

[0048] Please refer to Figure 3 , Figure 4 , Figure 3 A front view of a disposable suction head attached to a phacoemulsification handle provided by an embodiment of the present invention; Figure 4 for Figure 3 A side view of the phacoemulsification handle with an attached disposable suction tip is shown.

[0049] As shown in the figure, in one embodiment, the provided phacoemulsification handle attached disposable suction head is used to be installed at the suction hole of the phacoemulsification needle 3, so that the phacoemulsification handle 21 can be used as an injection and suction handle.

[0050] The disposable suction head 6 (hereinafter referred to as the suction head) attached to the phacoemulsification handle is generally a blind tube structure with one end closed and the other end open. The end with the closed tube mouth forms a suction part 7, and the end of the suction part 7 is circular. The other end with the tube mouth 8 forms a fixing part 9, which is used to be inserted into the suction hole 4 of the phacoemulsification needle 3. A limiting part 10 protruding radially outward is provided between the suction part 7 and the fixing part 9. A suction port 11 is provided on the tube wall of the suction part 7, and the suction port 11 is connected with the tube mouth 8 through an internal tube cavity 12.

[0051] Specifically, the suction port 11 is a single through hole located on the side wall of the head end of the suction portion 7, and the hole diameter thereof is 0.3 mm to 1 mm.

[0052] The material of the suction part 7, the limiting part 10 and the fixing part 9 is silicone, and the suction part 7, the limiting part 10 and the fixing part 9 are an integrated structure. The outer wall of the fixing part 9 forms a tapered guide surface 13 for facilitating the insertion of the phacoemulsification needle 3. The outer diameter of the tapered guide surface 13 gradually decreases downward, and the tapered guide surface 13 extends to the position where the limiting part 10 is located. That is to say, a slightly raised limiting part 10 is formed at the connection between the fixing part 9 and the suction part 7 to ensure that the suction head is installed in place and prevent over-insertion during installation. In order to reduce costs and facilitate forming, the limiting part 10 is made of the same silicone material as the outer walls of the suction part 7 and the fixing part 9.

[0053] In addition, the outer diameter of the limiting portion 10 does not exceed the outer diameter of the phacoemulsification needle 3, that is, the outer diameter of the limiting portion 10 is less than or equal to the outer diameter of the suction hole of the phacoemulsification needle 3, so as to ensure smooth entry into the eye incision and prevent the instrument from getting stuck and slipping at the incision position when being pulled out of the eye.

[0054] The size of the suction head 6 may vary according to the specifications of the phacoemulsification needle 3. The angle between the plane where the limiting portion 10 is located and the central axis of the fixing portion 9 is consistent with the inclined angle of the suction hole of the phacoemulsification needle 3, such as 45° or 60°.

[0055] Please refer to Figure 7 , Figure 8 , Fig. 9 , Figure 7 It is a schematic diagram of the matching relationship between the disposable suction head attached to the phacoemulsification handle and the phacoemulsification handle; Figure 8 This is a partial enlarged view of the front end of the phacoemulsification handle; Fig. 9 Schematic diagram of the process of inserting the disposable suction head attached to the phacoemulsification handle into the suction hole of the phacoemulsification needle.

[0056] As shown in the figure, when the above-mentioned suction head 6 is installed on the phacoemulsification needle 3 of the phacoemulsification handle 21, the fixing portion 9 of the suction head 6 is aligned with the suction hole 4 of the phacoemulsification needle 3, and then the suction head 6 is inserted into the suction hole 4. Under the action of the conical guiding surface 13, the fixing portion 9 of the suction head 6 smoothly enters the suction hole 4 of the phacoemulsification needle 3 and is pushed inward. When the limiting portion 10 of the suction head 6 abuts against the end of the suction hole, it can be confirmed that the suction head 6 has been installed in place. At this time, the fixing portion 9 of the suction head 6 is combined with the suction hole 4 through interference fit, and the two are relatively fixed and not easy to fall off.

[0057] By installing the suction head 6 at the front end of the phacoemulsification needle 3, the phacoemulsification handle 21 can be transformed into an injection and suction handle, that is, the phacoemulsification handle 21 has the function of an injection and suction handle, so that it can be used as an injection and suction handle. In this way, after emulsification is completed, by installing the suction head 6, the transformed phacoemulsification handle 21 can be directly used to remove the lens cortex and viscoelastic agent, and the injection and suction handle is no longer used alone. Since it is not necessary to replace the phacoemulsification handle 21 with an injection and suction handle, it is not necessary to reconnect the injection and suction pipeline, thereby significantly shortening the operation time. Moreover, the suction head 6 is limited to one-time use. After installation, it will not increase the risk of infection when entering the eye, which helps to reduce the probability of complications, thereby improving the safety of cataract surgery and ensuring the treatment and postoperative recovery effects of cataract surgery.

[0058] Please refer to Fig.10 , Fig.11 , Fig.10 A front view of a second phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention; Fig.11 for Fig.10 A side view of the phacoemulsification handle with an attached disposable suction tip is shown.

[0059] In this embodiment, the same parts as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.

[0060] As shown in the figure, compared with the first embodiment, the phacoemulsification handle-attached disposable suction head 6 provided in the second embodiment also has the following structure:

[0061] The suction part 7 is bent (or tilted) to one side relative to the fixing part 9, and the suction part 7 can form different angles such as 30°, 45°, or 90° with the overall central axis. The suction head 6 with such a tilted or bent suction part 7 can facilitate the removal of the cortex at the incision position by suction.

[0062] In addition, an inner lining body 14 with a hardness greater than that of the silicone material is provided in the middle interlayer of the fixing portion 9. The inner lining body 14 may be PMMA (polymethyl methacrylate) or a metal material. Since the inner lining body 14 has a certain hardness, it can prevent the hollow pipe from being squeezed and blocked when installed on the phacoemulsification needle 3. At the same time, the outer wall of the fixing portion 9 is made of soft silicone material, which is convenient for close connection with the phacoemulsification needle 3 after installation.

[0063] Of course, the lining body 14 may also be directly arranged on the inner wall of the hollow pipe of the fixing part 9, which can also play the role of supporting the fixing part 9 and preventing the hollow pipe of the fixing part 9 from being compressed and deformed.

[0064] Please refer to Fig.12 , Fig.12 A front view of a third phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention.

[0065] In this embodiment, the same parts as those in the above embodiments are given the same figure marks, and the same text descriptions are omitted.

[0066] As shown in the figure, compared with the above-mentioned embodiments, the suction port 11 of the disposable suction head 6 with an attached phacoemulsification handle provided in this embodiment is no longer a conventional circle, but a sieve-shaped hole distributed circumferentially around the tube wall, and the sieve-shaped hole can also cover the closed circular end face of the suction part 7.

[0067] The conventional circular suction port is suitable for suctioning ordinary cortex, while the dot-matrix distributed sieve holes are more suitable for suctioning fine cortex on the capsule and polishing the capsule. For the rest of the structure, please refer to the above.

[0068] Please refer to Fig.13 , Fig.13 A front view of a fourth phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention.

[0069] In this embodiment, the same parts as those in the above embodiments are given the same figure marks, and the same text descriptions are omitted.

[0070] As shown in the figure, compared with the above-mentioned embodiments, the disposable suction head 6 with an attached phacoemulsification handle provided in this embodiment has a frosted surface 15 on the outer wall of the head end of the suction part 7. The frosted surface 15 can be used to polish the capsule membrane during the injection and suction process to achieve a better treatment effect. Please refer to the above for the remaining structures.

[0071] Please refer to Fig.14 , Fig.14 A front view of a fifth phacoemulsification handle-attached disposable suction head provided in an embodiment of the present invention.

[0072] In this embodiment, the same parts as those in the above embodiments are given the same figure marks, and the same text descriptions are omitted.

[0073] As shown in the figure, compared with the above-mentioned embodiments, the difference of the disposable suction head 6 attached to the phacoemulsification handle provided in this embodiment is that the axial length of the conical guide surface 13 of the fixing portion 9 is shorter and no longer extends to the limiting portion 10. The fixing portion 9 is only partially formed with a conical guide surface 13 at the lower end, that is, the tail end of the fixing portion is reduced in diameter, which can also guide the suction head 6 to be inserted into the phacoemulsification needle 3. Please refer to the above for the remaining structures.

[0074] Please refer to Fig.15 , Fig.15 A schematic cross-sectional view of the tube wall thickness around the suction port.

[0075] In this embodiment, the same parts as those in the above embodiments are given the same figure marks, and the same text descriptions are omitted.

[0076] As shown in the figure, relative to the above-mentioned embodiments, the disposable suction head 6 with attached phacoemulsification handle provided in this embodiment has a tube wall thickness around the suction port 11 which gradually decreases inwardly along the radial direction of the suction port, and its thickness is smaller than the wall thickness of other parts of the suction head 6. Please refer to the above for the rest of the structure.

[0077] Since the local tube wall around the suction port 11 is relatively thin, it has a certain degree of deformation ability. When a larger cortical block blocks the suction port 11, the suction port 11 can be passively expanded to facilitate the passage of the cortex, thereby improving the efficiency of cortical removal and protecting the posterior capsule of the lens from being ruptured by suction when the posterior capsule is accidentally aspirated, thereby avoiding complications.

[0078] Please refer to Fig.16 , Fig.16 It is a structural schematic diagram of the combination of the suction head and the installation sleeve.

[0079] As shown in the figure, since the suction head 6 is relatively small and not easy to be directly clamped and installed, a special installation sleeve 16 can be provided for the suction head 6. The installation sleeve 16 is generally cylindrical in structure, having an inner cavity for accommodating the suction head 6, and a groove 17 is provided on the inner wall of its open end. In the mating state, the suction part 7 of the suction head 6 is hidden in the inner cavity of the installation sleeve 16, the limiting part 10 of the suction head 6 is embedded in the groove 17, and the fixing part 9 of the suction head 6 extends outward from the opening of the installation sleeve 16 by a certain distance and is exposed to the outside.

[0080] During installation, the installation sleeve 16 is held and the fixing part 9 of the suction head 6 is inserted into the phacoemulsification needle 3 to the limiting part. Since the binding force between the suction head 3 and the inner wall of the suction hole 4 is greater than the clamping force between the installation sleeve 16 and the suction head 6, the suction head 6 can be installed in place by pulling out the installation sleeve 16. During use, the operator appropriately adjusts the sleeve 2 of the phacoemulsification needle 3 so that the end position of the sleeve 2 is flush with the limiting part 10 of the suction head 6, which can ensure the safety of the injection and suction process and flexible operation.

[0081] As an improvement, bumps or anti-slip patterns may be designed on the outer surface of the mounting sleeve 16 to increase the friction between the operating fingers, making it easier to separate the mounting sleeve 16 from the suction head 6 by applying force and to remove the mounting sleeve 16 easily.

[0082] The above embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementations. For example, the limiting portion 10 can be continuous or discontinuous in the circumferential direction, or the suction head 6 can be made of other medical flexible materials such as silicone, or the suction head 6 can be designed into other shapes, etc. Since there are many possible implementation methods, they will not be described one by one here.

[0083] Please refer again Figure 1 , Figure 2 In addition to the above-mentioned suction head 6, the present invention further provides a phacoemulsification handle 21, comprising a handle portion 1, a sleeve 2 arranged at the front end of the handle portion, and a phacoemulsification needle 3 located inside the sleeve. The phacoemulsification needle 3 is a hollow structure, and its front end provided with a suction hole 4 passes through the sleeve 2 and protrudes outward, and a perfusion hole 5 is opened on the side wall of the front end of the sleeve 2. The rear end of the handle portion 1 is provided with a perfusion pipe 18, a suction pipe 19, and an ultrasonic energy line 20. The perfusion pipe 18 is connected to the annular cavity between the sleeve 2 and the phacoemulsification needle 3 and the perfusion hole 5 on the side of the sleeve 2 to supply perfusion fluid during surgery. The suction pipe 19 is connected to the hollow inner cavity of the phacoemulsification needle 3 to suck back the perfusion fluid mixed with human tissue during surgery.

[0084] After the improvement, the phacoemulsification handle 21 is used in conjunction with the phacoemulsification handle-attached disposable suction head 6 described above. After the suction head 6 is added, it is used as an injection and suction handle. When used as an injection and suction handle, it can be controlled by a foot pedal or a button on the control panel to stop the ultrasonic operation and keep the perfusion pipe 18 and the suction pipe 19 running normally, thereby realizing the functional conversion from the phacoemulsification handle to the injection and suction handle. Regarding the remaining structure of the phacoemulsification handle 21, please refer to the prior art, which will not be repeated in this article.

[0085] The above is a detailed introduction to the phacoemulsification handle and the attached disposable suction head provided by the present invention. Specific examples are used herein to illustrate the principle and implementation of the present invention, and the description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A disposable suction head with an attached phacoemulsification handle, characterized in that: The disposable suction head (6) attached to the phacoemulsification handle is generally a blind tube structure with one end closed and the other end open, wherein the end with the tube opening closed forms a suction portion (7), and the other end with the tube opening (8) forms a fixing portion (9); the fixing portion (9) is used to be inserted into the suction hole (4) of the phacoemulsification needle (3), and a limiting portion (10) protruding radially outward is provided between the suction portion (7) and the fixing portion (9); a suction port (11) is provided on the tube wall of the suction portion (7), and the suction port (11) is in contact with the suction hole (4) of the phacoemulsification needle (3). The tube opening (8) of the fixing portion (9) is connected via an internal tube cavity (12); the suction port (11) comprises a single through hole located on the side wall of the head end of the suction portion (7) or a sieve-like hole located on the side wall of the head end of the suction portion (7); the suction portion (7) is coaxially arranged with the fixing portion (9) or the suction portion (7) is bent or inclined to one side relative to the fixing portion (9); the tube wall thickness around the suction port (11) decreases inwardly along the radial direction of the suction port (11); the suction portion (7) The outer wall of the head end is provided with a frosted surface (15); and also includes a mounting sleeve (16) used in conjunction with the mounting sleeve (16); the mounting sleeve (16) has an inner cavity for accommodating the disposable suction head (6) attached to the phacoemulsification handle, and the inner wall of the open end thereof is provided with a groove (17); in a mating state, the suction portion (7) of the disposable suction head (6) attached to the phacoemulsification handle is hidden in the inner cavity of the mounting sleeve (16), and the limiting portion (10) of the disposable suction head (6) attached to the phacoemulsification handle is embedded in the inner wall of the mounting sleeve (16). The groove (17) is provided, and at least a part of the fixing portion (9) of the disposable suction head (6) attached to the phacoemulsification handle is exposed outwardly from the opening of the mounting sleeve (16); during installation, the mounting sleeve (16) is held and the fixing portion (9) of the suction head (6) is inserted into the phacoemulsification needle (3) to the limit portion. Since the bonding force between the suction head (6) and the inner wall of the suction hole (4) is greater than the engagement force between the mounting sleeve (16) and the suction head (6), the suction head (6) can be installed in place by pulling out the mounting sleeve (16).

2. The disposable suction head with attached phacoemulsification handle according to claim 1, characterized in that: The attraction portion (7), the limiting portion (10) and the fixing portion (9) are made of silicone rubber, and an inner wall or an intermediate layer of the fixing portion (9) is provided with an inner lining body (14) having a hardness greater than that of the silicone rubber material.

3. The disposable suction head with attached phacoemulsification handle according to claim 1, characterized in that: The end of the fixing portion (9) is provided with a tapered guiding surface (13) for facilitating the insertion of the phacoemulsification needle (3).

4. The disposable suction head with attached phacoemulsification handle according to claim 1, characterized in that: The outer diameter of the limiting portion (10) is smaller than or equal to the outer diameter of the suction hole of the phacoemulsification needle (3); The angle between the plane where the limiting portion (10) is located and the central axis of the fixing portion (9) is consistent with the angle of the inclined surface of the suction hole of the phacoemulsification needle (3).

5. A phacoemulsification handle, characterized in that: include: A handle portion (1), a sleeve (2) arranged at the front end of the handle portion, and a phacoemulsification needle (3) located inside the sleeve (2), wherein the phacoemulsification needle (3) is a hollow structure, and its front end forming a suction hole (4) passes through the sleeve (2) and protrudes outward, and an injection hole (5) is opened on the side wall of the front end of the sleeve (2), which cooperates with the phacoemulsification handle-attached disposable suction head (6) according to any one of claims 1 to 4, and is used as an injection and suction handle after the phacoemulsification handle-attached disposable suction head (6) is installed and the ultrasonic operation is stopped.

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