Medical optical fiber ferrule, medical optical fiber connector, and preparation method of medical optical fiber connector

Abstract

The present invention discloses a medical optical fiber ferrule, a medical optical fiber connector, and a method for preparing the medical optical fiber connector. The medical optical fiber ferrule of the present invention comprises a ferrule head and a ferrule base detachably connected to the ferrule head, the ferrule head having a first optical fiber jack for the medical optical fiber to pass through, the ferrule base having a second optical fiber jack for the medical optical fiber to pass through and a ferrule jack communicating with the second optical fiber jack, one end of the ferrule head being inserted into the ferrule jack and the insertion depth of the ferrule head being adjustable, and the central axis of the first optical fiber jack coinciding with the central axis of the second optical fiber jack. The medical optical fiber ferrule of the present invention can retract the medical optical fiber end face of the medical optical fiber connector into the first optical fiber jack by a preset distance by adjusting the insertion depth of the ferrule head in the ferrule jack, effectively preventing the phenomenon of damage to the medical optical fiber end face due to collision during the use of the medical optical fiber connector, thereby protecting the medical optical fiber end face.

Description

Technical Field

[0001] The present invention relates to the technical field of medical optical fibers, and in particular to a medical optical fiber ferrule, a medical optical fiber connector and a preparation method of the medical optical fiber connector. Background Art

[0002] Medical laser optical fiber has to transmit high laser energy, so the quality of the optical fiber end face is very high, and it usually needs to go through the processes of degumming, cleaning, and multiple grinding processes to complete. The polished optical fiber end face is flush with the ferrule end face of the optical fiber connector. During the use of the medical optical fiber connector, the medical optical fiber connector must be connected to the SMA905 connector on the laser therapy machine. However, there is no anti-collision device on the SMA905 connector. During the connection of the medical optical fiber connector, collisions are inevitable. If the end face of the medical optical fiber is damaged, it will affect the transmission efficiency of the medical optical fiber, and even make the medical optical fiber unusable. Summary of the invention

[0003] The first object of the present invention is to provide a medical optical fiber ferrule, which can prevent the end face of the medical optical fiber from being damaged by collision during use.

[0004] The second object of the present invention is to provide a medical optical fiber connector including the above-mentioned medical optical fiber ferrule.

[0005] The third object of the present invention is to provide a method for preparing a medical optical fiber ferrule that can protect the end face of the medical optical fiber.

[0006] To achieve this object, in a first aspect, the present invention adopts the following technical solutions:

[0007] A medical optical fiber ferrule comprises a ferrule head and a ferrule base detachably connected to the ferrule head, the ferrule head having a first optical fiber jack for passing the medical optical fiber, the ferrule base having a second optical fiber jack for passing the medical optical fiber and a ferrule jack communicating with the second optical fiber jack, one end of the ferrule head being inserted into the ferrule jack and the insertion depth of the ferrule head being adjustable, and the central axis of the first optical fiber jack coincides with the central axis of the second optical fiber jack.

[0008] In some embodiments, an outer wall of the insertion end of the ferrule head is provided with an external thread, and an inner wall of the ferrule hole is provided with an internal thread that can be threadably matched with the external thread.

[0009] In some embodiments, a first positioning mark is provided on the outer wall of the ferrule head, a second positioning mark and a third positioning mark are provided on the outer wall of the ferrule base, and the third positioning mark and the second positioning mark are spaced apart along the circumference of the ferrule base.

[0010] In some embodiments, the first positioning mark, the second positioning mark and the third positioning mark are all groove structures.

[0011] In some embodiments, the medical fiber optic ferrule also includes an adjustment gasket, the ferrule head includes a main body and an insertion portion connected to the main body and capable of being inserted into the ferrule hole, and the adjustment gasket can be sleeved on the outer circumference of the insertion portion; the outer diameter of the main body is larger than the aperture of the ferrule hole or a circle of flange is provided at the connection between the insertion portion and the main body, and the outer diameter of the flange is larger than the aperture of the ferrule hole.

[0012] In the second aspect, the present invention adopts the following technical solutions:

[0013] A medical optical fiber connector, comprising:

[0014] The above-mentioned medical optical fiber ferrule;

[0015] A fastener, inserted into an end of the ferrule base of the medical optical fiber ferrule away from the ferrule head and connected to the ferrule base, the fastener having a third optical fiber jack, the central axis of the third optical fiber jack coincides with the central axis of the second optical fiber jack of the ferrule base; and

[0016] The medical optical fiber is sequentially inserted into the third optical fiber jack, the second optical fiber jack and the first optical fiber jack of the ferrule head, and the end face of the medical optical fiber is retracted into the first optical fiber jack by a preset distance.

[0017] In some embodiments, glue is provided at the connection between the ferrule head and the ferrule base.

[0018] In the third aspect, the present invention adopts the following technical solutions:

[0019] A method for preparing the medical optical fiber connector as described above, the method comprising the following steps:

[0020] Insert one end of the ferrule head of the medical optical fiber ferrule into the ferrule hole of the ferrule base, so that the central axis of the first optical fiber hole of the ferrule head coincides with the central axis of the second optical fiber hole of the ferrule base;

[0021] Pass the medical optical fiber through the fastener, the ferrule base and the ferrule head in sequence, adjust the length of the medical optical fiber extending from the ferrule head, and then fix the fastener to the ferrule base;

[0022] Grinding the end face of the medical optical fiber until a preset optical fiber end face effect is achieved and the end face of the medical optical fiber is flush with the end face of the ferrule;

[0023] The insertion depth of the ferrule head in the ferrule insertion hole is adjusted so that the end face of the medical optical fiber is retracted into the first optical fiber insertion hole by a preset distance, and the ferrule head is fixedly connected to the ferrule base.

[0024] In some embodiments, after inserting one end of the ferrule head of the medical optical fiber ferrule into the ferrule jack of the ferrule base, the following steps are further included: rotating the ferrule head so that the first positioning mark on the ferrule head and the second positioning mark on the ferrule base are located on the same straight line;

[0025] The step of adjusting the insertion depth of the ferrule head in the ferrule insertion hole comprises: rotating the ferrule head so that a first positioning mark on the ferrule head and a third positioning mark on the ferrule base are located on the same straight line.

[0026] In some embodiments, the step of adjusting the insertion depth of the ferrule head in the ferrule jack so that the end face of the medical optical fiber is retracted into the first optical fiber jack by a preset distance, and fixedly connecting the ferrule head to the ferrule base comprises:

[0027] Glue is applied on the outer wall of the insertion end of the ferrule head provided with an external thread, and then the insertion end of the ferrule head is inserted into the ferrule socket provided with an internal thread, so that the ferrule head and the ferrule base are threadably connected through the external thread and the internal thread, and the end face of the medical optical fiber is controlled to be retracted into the first optical fiber socket by a preset distance.

[0028] The present invention has at least the following beneficial effects:

[0029] The medical optical fiber ferrule of the present invention enables the ferrule head to be detachably connected to the ferrule base, one end of the ferrule head is inserted into the ferrule socket and the insertion depth of the ferrule head is adjustable. Therefore, a medical optical fiber connector using the medical optical fiber ferrule can retract the end face of the medical optical fiber into the first optical fiber socket by a preset distance by adjusting the insertion depth of the ferrule head in the ferrule socket, effectively preventing the end face of the medical optical fiber from being damaged due to collision during the use of the medical optical fiber connector, thereby protecting the end face of the medical optical fiber.

[0030] The medical optical fiber connector of the present invention uses the above-mentioned medical optical fiber ferrule, so that the end face of the medical optical fiber can be retracted into the first optical fiber jack by a preset distance, thereby effectively avoiding damage to the end face of the medical optical fiber due to collision during use, thereby achieving protection of the end face of the medical optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a medical optical fiber ferrule provided in an embodiment of the present invention;

[0032] Figure 2 for Figure 1The exploded schematic diagram of the medical optical fiber ferrule shown;

[0033] Figure 3 for Figure 1 A schematic structural diagram of the medical optical fiber ferrule from another angle;

[0034] Figure 4 for Figure 3 A cross-sectional view of the medical optical fiber ferrule along the AA direction;

[0035] Figure 5 for Figure 4 The exploded schematic diagram of the medical optical fiber ferrule shown;

[0036] Figure 6 A schematic structural diagram of a medical optical fiber connector provided in an embodiment of the present invention;

[0037] Figure 7 for Figure 6 A cross-sectional view of the medical optical fiber connector shown;

[0038] Figure 8 for Figure 6 An exploded schematic diagram of a medical optical fiber connector is shown;

[0039] Fig. 9 A flow chart of a method for preparing a medical optical fiber connector provided in an embodiment of the present invention.

[0040] Description of Figure Numbers:

[0041] 10-medical fiber optic ferrule, 11-ferrule head, 12-ferrule base, 20-fastener, 21-fastening external thread, 30-medical optical fiber, 111-first optical fiber jack, 112-external thread, 113-first positioning mark, 121-ferrule jack, 122-second optical fiber jack, 123-second positioning mark, 124-third positioning mark. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0043] This embodiment provides a medical optical fiber ferrule 10, such as Figures 1 to 5As shown, the medical fiber optic ferrule 10 includes a ferrule head 11 and a ferrule base 12 detachably connected to the ferrule head 11, the ferrule head 11 has a first fiber optic jack 111 for the medical optical fiber to pass through, the ferrule base 12 has a second fiber optic jack 122 for the medical optical fiber to pass through and a ferrule jack 121 communicating with the second fiber optic jack 122, one end of the ferrule head 11 is inserted into the ferrule jack 121 and the insertion depth of the ferrule head 11 is adjustable, and the central axis of the first fiber optic jack 111 coincides with the central axis of the second fiber optic jack 122.

[0044] The above-mentioned medical fiber optic ferrule 10 makes the ferrule head 11 and the ferrule base 12 detachably connected, one end of the ferrule head 11 is inserted into the ferrule socket 121 and the insertion depth of the ferrule head 11 is adjustable. Therefore, a medical fiber optic connector using the medical fiber optic ferrule 10 can retract the end face of the medical optical fiber into the first fiber optic socket 111 by a preset distance by adjusting the insertion depth of the ferrule head 11 in the ferrule socket 121, effectively preventing the end face of the medical optical fiber from being damaged due to collision during the use of the medical fiber optic connector, thereby protecting the end face of the medical optical fiber.

[0045] In some embodiments, an external thread 112 is provided on the outer wall of the insertion end of the ferrule head 11 (eg, Figure 2 As shown in the figure, the inner wall of the ferrule socket 121 is provided with an internal thread that can cooperate with the external thread 112. After the ferrule head 11 is inserted into the ferrule socket 121, the external thread 112 and the internal thread cooperate with each other to achieve a detachable connection with the ferrule base 12. The operator can easily adjust the insertion depth of the ferrule head 11 in the ferrule socket 121 by rotating the ferrule head 11, thereby controlling the distance between the end face of the medical optical fiber and the end face of the ferrule head 11.

[0046] Furthermore, if Figure 1 and Figure 2 As shown, a first positioning mark 113 is provided on the outer wall of the ferrule head 11, and a second positioning mark 123 and a third positioning mark 124 are provided on the outer wall of the ferrule base 12. The third positioning mark 124 and the second positioning mark 123 are arranged at intervals along the circumference of the ferrule base 12. The operator can quickly and accurately adjust the insertion depth of the ferrule head 11 in the ferrule socket 121 by controlling the first positioning mark 113 and the second positioning mark 123 or the third positioning mark 124 to be on the same straight line.

[0047] Specifically, the third positioning mark 124 and the second positioning mark 123 are arranged at intervals along the circumference of the ferrule base 12. When the ferrule head 11 is inserted into the ferrule socket 121 and then rotated until the first positioning mark 113 and the second positioning mark 123 are located on the same straight line, the insertion depth of the ferrule head 11 is H1; when the ferrule head 11 is inserted into the ferrule socket 121 and then rotated until the first positioning mark 113 and the third positioning mark 124 are located on the same straight line, the insertion depth of the ferrule head 11 is H2, and H2 is less than H1. The operator can easily determine the current insertion depth of the ferrule head 11 according to the status of the first positioning mark 113 and the second positioning mark 123 or the third positioning mark 124.

[0048] Optionally, the first positioning mark 113, the second positioning mark 123 and the third positioning mark 124 can be groove structures. Of course, the first positioning mark 113, the second positioning mark 123 and the third positioning mark 124 can also be other forms of marks, such as convex structures, as long as it is convenient for operators to control and judge the insertion depth of the ferrule head 11.

[0049] In other embodiments, the insertion depth of the ferrule head 11 in the ferrule socket 121 can also be adjusted in the following way: the ferrule head 11 includes a main body and an insertion portion connected to the main body and capable of being inserted into the ferrule socket 121, the outer diameter of the main body is larger than the aperture of the ferrule socket 121, the medical fiber optic ferrule 10 also includes an adjusting gasket, and the adjusting gasket can be sleeved on the outer periphery of the insertion portion, so that the insertion depth of the ferrule head 11 in the ferrule socket 121 can be adjusted by adding the adjusting gasket sleeved on the outer periphery of the insertion portion, and adjusting gaskets of different thicknesses correspond to different insertion depths.

[0050] Alternatively, the ferrule head 11 includes a main body and an insertion portion connected to the main body and capable of being inserted into the ferrule socket 121. A flange is provided at the connection between the insertion portion and the main body. The outer diameter of the flange is larger than the aperture of the ferrule socket 121. The medical fiber optic ferrule 10 also includes an adjusting gasket, which can be sleeved on the outer periphery of the insertion portion. By adding the adjusting gasket sleeved on the outer periphery of the insertion portion, the insertion depth of the ferrule head 11 in the ferrule socket 121 can be adjusted. Adjustment gaskets of different thicknesses correspond to different insertion depths.

[0051] Figures 1 to 5The method of using the medical fiber optic ferrule 10 is as follows: first, thread the ferrule head 11 and the ferrule base 12 together, so that the first positioning mark 113 and the second positioning mark 123 are aligned (that is, the first positioning mark 113 and the second positioning mark 123 are located on the same straight line); then, the medical optical fiber passes through the fastener 20, the ferrule base 12 and the ferrule head 11 in sequence, adjust the length of the medical optical fiber extending out of the ferrule head 11, and fix the medical optical fiber to the ferrule base 12 through the fastener; then, grind the end face of the medical optical fiber, that is, grind the installed medical optical fiber multiple times until the desired end face effect of the medical optical fiber is achieved, and this At this time, the end face of the medical optical fiber is flush with the end face of the ferrule head 11; finally, the ferrule head 11 and the ferrule base 12 are loosened, and thread glue is applied to the external thread 112 of the ferrule head 11, and the ferrule head 11 is threadedly connected to the ferrule base 12 again, and the first positioning mark 113 and the third positioning mark 124 are aligned (that is, the first positioning mark 113 and the third positioning mark 124 are located on the same straight line), and it is left to stand for a while until the thread glue solidifies, and the installation of the medical optical fiber is completed. At this time, the end face of the medical optical fiber is retracted into the ferrule head 11 by a preset distance, that is, the end face of the medical optical fiber is at a set safety distance (for example, 0.1mm) to the end face of the ferrule head 11.

[0052] In summary, the insertion depth of the ferrule head 11 of the medical optical fiber ferrule 10 of the present invention in the ferrule socket 121 of the ferrule base 12 is adjustable, so that the medical optical fiber connector using this medical optical fiber ferrule 10 can control the distance between its medical optical fiber end face and the end face of the ferrule head 11, so that the medical optical fiber end face is retracted a certain distance in the first optical fiber socket 111 of the ferrule head 11, effectively preventing the occurrence of collision during the use of the medical optical fiber connector, resulting in damage to the medical optical fiber end face, thereby extending the service life of the entire medical optical fiber connector.

[0053] This embodiment also provides a medical optical fiber connector, such as Figures 6 to 8 As shown, the medical fiber optic connector includes a fastener 20, a medical optical fiber 30 and the above-mentioned medical optical fiber ferrule 10; the fastener 20 is inserted into the ferrule base 12 of the medical optical fiber ferrule 10 at one end away from the ferrule head 11 and connected to the ferrule base 12, the fastener 20 has a third optical fiber jack, and the central axis of the third optical fiber jack coincides with the central axis of the second optical fiber jack 122 of the ferrule base 12; the medical optical fiber 30 is sequentially inserted into the third optical fiber jack, the second optical fiber jack 122 and the first optical fiber jack 111 of the ferrule head 11, and the end face of the medical optical fiber 30 is retracted into the first optical fiber jack 111 by a preset distance.

[0054] The above-mentioned medical fiber optic connector uses the above-mentioned medical fiber optic ferrule 10 so that the end face of the medical optical fiber 30 can be retracted into the first optical fiber jack 111 of the ferrule head 11 by a preset distance, thereby effectively avoiding damage to the end face of the medical optical fiber 30 due to collision during use, thereby achieving protection of the end face of the medical optical fiber 30.

[0055] In some embodiments, adhesive is provided at the connection between the ferrule head 11 and the ferrule base 12, and the adhesive can make the connection between the ferrule head 11 and the ferrule base 12 more secure. Optionally, the adhesive can be, but is not limited to, thread glue.

[0056] Optionally, a fastening external thread 21 is provided at one end of the fastener 20 inserted into the ferrule base 12, and the inner wall of the second optical fiber insertion hole 122 of the ferrule base 12 is provided with a ferrule internal thread that can cooperate with the fastening external thread 21. After the fastener 20 is inserted into the second optical fiber insertion hole 122, the fastening external thread 21 and the ferrule internal thread can be threadedly matched to achieve connection with the ferrule base 12. Of course, the fastener 20 and the ferrule base 12 can also be connected in other ways, such as a snap connection.

[0057] This embodiment also provides a method for preparing a medical optical fiber connector, which can be used to prepare the above-mentioned medical optical fiber connector. Fig. 9 As shown, the preparation method of the medical optical fiber connector includes the following steps:

[0058] S100 , insert one end of the ferrule head 11 of the medical optical fiber ferrule 10 into the ferrule hole 121 of the ferrule base 12 , so that the central axis of the first optical fiber hole 111 of the ferrule head 11 coincides with the central axis of the second optical fiber hole 122 of the ferrule base 12 .

[0059] In some embodiments, when a first positioning mark 113 is provided on the outer wall of the ferrule head 11, and a second positioning mark 123 and a third positioning mark 124 are provided on the outer wall of the ferrule base 12 and are spaced circumferentially along the ferrule base 12, after inserting one end of the ferrule head 11 of the medical fiber optic ferrule 10 into the ferrule socket 121 of the ferrule base 12, the following steps are also included: rotating the ferrule head 11 so that the first positioning mark 113 on the ferrule head 11 and the second positioning mark 123 on the ferrule base 12 are located on the same straight line, and at this time, the insertion depth of the ferrule head 11 is H1.

[0060] S200, passing the medical optical fiber 30 through the fastener 20, the ferrule base 12 and the ferrule head 11 in sequence, adjusting the length of the medical optical fiber 30 extending out of the ferrule head 11, and then fixing the fastener 20 to the ferrule base 12. Optionally, a fastening external thread 21 can be provided at one end of the fastener 20 inserted into the medical optical fiber ferrule 10, and an ferrule internal thread that can cooperate with the fastening external thread 21 is provided on the inner wall of the second optical fiber jack 122 of the medical optical fiber ferrule 10, and the fastener 20 and the ferrule base 12 are fixedly connected by the thread cooperation between the fastening external thread 21 and the ferrule internal thread.

[0061] S300 , grinding the end face of the medical optical fiber 30 until a preset optical fiber end face effect is achieved, and the end face of the medical optical fiber 30 is flush with the end face of the ferrule head 11 .

[0062] S400 , adjusting the insertion depth of the ferrule head 11 in the ferrule insertion hole 121 , so that the end face of the medical optical fiber 30 is retracted into the first optical fiber insertion hole 111 by a preset distance, and fixing the ferrule head 11 to the ferrule base 12 .

[0063] In some embodiments, when a first positioning mark 113 is provided on the outer wall of the ferrule head 11, and a second positioning mark 123 and a third positioning mark 124 are provided on the outer wall of the ferrule base 12 and are spaced circumferentially along the ferrule base 12, adjusting the insertion depth of the ferrule head 11 in the ferrule socket 121 in step S400 includes the following steps: rotating the ferrule head 11 so that the first positioning mark 113 on the ferrule head 11 and the third positioning mark 124 on the ferrule base 12 are located on the same straight line, and at this time, the insertion depth of the ferrule head 11 is H2, and H2 is less than H1.

[0064] In some embodiments, based on the fact that an external thread 112 is provided on the outer wall of the insertion end of the ferrule head 11 and an internal thread is provided on the ferrule socket 121 of the ferrule base 12, step S400 includes: applying glue (such as thread glue) on the outer wall of the insertion end of the ferrule head 11 with the external thread 112 (i.e., the external thread 112), and then inserting the insertion end of the ferrule head 11 into the ferrule socket 121 of the ferrule base 12 with the internal thread, so that the ferrule head 11 and the ferrule base 12 are threadably connected via the external thread 112 and the internal thread, and controlling the end face of the medical optical fiber 30 to be retracted into the first optical fiber socket 111 by a preset distance.

[0065] It should be noted that when a part is referred to as being "fixed to" another part, it may be directly on the other part or there may be a central part. When a part is considered to be "connected" to another part, it may be directly connected to the other part or there may be a central part at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A medical optical fiber ferrule, characterized in that: It comprises a ferrule head (11) and a ferrule base (12) detachably connected to the ferrule head (11), the ferrule head (11) having a first optical fiber jack (111) for inserting a medical optical fiber, the ferrule base (12) having a second optical fiber jack (122) for inserting the medical optical fiber and a ferrule jack (121) communicating with the second optical fiber jack (122), one end of the ferrule head (11) is inserted into the ferrule jack (121) and the insertion depth of the ferrule head (11) is adjustable, and the central axis of the first optical fiber jack (111) coincides with the central axis of the second optical fiber jack (122); An external thread (112) is provided on the outer wall of the insertion end of the ferrule head (11), and an internal thread that can be threadably matched with the external thread (112) is provided on the inner wall of the ferrule insertion hole (121); A first positioning mark (113) is provided on the outer wall of the ferrule head (11), and a second positioning mark (123) and a third positioning mark (124) are provided on the outer wall of the ferrule base (12); the third positioning mark (124) and the second positioning mark (123) are arranged at intervals along the circumference of the ferrule base (12).

2. The medical optical fiber ferrule according to claim 1, characterized in that: The first positioning mark (113), the second positioning mark (123) and the third positioning mark (124) are all groove structures.

3. The medical optical fiber ferrule according to claim 1, characterized in that: The medical optical fiber ferrule also includes an adjustment gasket, the ferrule head (11) includes a main body and an insertion part connected to the main body and capable of being inserted into the ferrule hole (121), and the adjustment gasket can be sleeved on the outer periphery of the insertion part; the outer diameter of the main body is larger than the aperture of the ferrule hole (121), or a circle of flange is provided at the connection between the insertion part and the main body, and the outer diameter of the flange is larger than the aperture of the ferrule hole (121).

4. A medical optical fiber connector, characterized in that: include: The medical optical fiber ferrule according to any one of claims 1 to 3; A fastener (20) is inserted into an end of the ferrule base (12) of the medical optical fiber ferrule away from the ferrule head (11) and connected to the ferrule base (12), wherein the fastener (20) has a third optical fiber jack, and the central axis of the third optical fiber jack coincides with the central axis of the second optical fiber jack (122) of the ferrule base (12); as well as The medical optical fiber (30) is sequentially inserted into the third optical fiber jack, the second optical fiber jack (122), and the first optical fiber jack (111) of the ferrule head (11), and the end face of the medical optical fiber (30) is retracted into the first optical fiber jack (111) by a preset distance.

5. The medical optical fiber connector according to claim 4, characterized in that: Adhesive is provided at the connection between the ferrule head (11) and the ferrule base (12).

6. The method for preparing a medical optical fiber connector according to claim 4 or 5, characterized in that: The preparation method comprises the following steps: Inserting one end of the ferrule head (11) of the medical optical fiber ferrule (10) into the ferrule insertion hole (121) of the ferrule base (12), so that the central axis of the first optical fiber insertion hole (111) of the ferrule head (11) coincides with the central axis of the second optical fiber insertion hole (122) of the ferrule base (12); Passing the medical optical fiber (30) through the fastener (20), the ferrule base (12) and the ferrule head (11) in sequence, and after adjusting the length of the medical optical fiber (30) extending out of the ferrule head (11), the fastener (20) is fixedly connected to the ferrule base (12); Grinding the end face of the medical optical fiber (30) until a preset optical fiber end face effect is achieved, and the end face of the medical optical fiber (30) is flush with the end face of the ferrule (11); The insertion depth of the ferrule head (11) in the ferrule insertion hole (121) is adjusted so that the end face of the medical optical fiber (30) is retracted into the first optical fiber insertion hole (111) by a preset distance, and the ferrule head (11) is fixedly connected to the ferrule base (12).

7. The method for preparing a medical optical fiber connector according to claim 6, characterized in that: After one end of the ferrule head (11) of the medical optical fiber ferrule (10) is inserted into the ferrule insertion hole (121) of the ferrule base (12), the following steps are also included: rotating the ferrule head (11) so that a first positioning mark (113) on the ferrule head (11) and a second positioning mark (123) on the ferrule base (12) are located on the same straight line; The step of adjusting the insertion depth of the ferrule head (11) in the ferrule insertion hole (121) comprises: rotating the ferrule head (11) so that a first positioning mark (113) on the ferrule head (11) and a third positioning mark (124) on the ferrule base (12) are located on the same straight line.

8. The method for preparing a medical optical fiber connector according to claim 6, characterized in that: The step of adjusting the insertion depth of the ferrule head (11) in the ferrule insertion hole (121) so that the end face of the medical optical fiber (30) is retracted into the first optical fiber insertion hole (111) by a preset distance, and fixedly connecting the ferrule head (11) to the ferrule base (12) comprises: Glue is applied to the outer wall of the insertion end of the ferrule head (11) provided with an external thread (112), and then the insertion end of the ferrule head (11) is inserted into the ferrule insertion hole (121) provided with an internal thread, so that the ferrule head (11) and the ferrule base (12) are threadably connected via the external thread (112) and the internal thread, and the end face of the medical optical fiber (30) is controlled to be retracted into the first optical fiber insertion hole (111) by a preset distance.

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