CN117814733A

CN117814733A - Milk tube mirror system

Info

Publication number: CN117814733A
Application number: CN202311871034.3A
Authority: CN
Inventors: 杨启伟; 霍鹏; 赵征
Original assignee: Shenzhen Maimokang Medical Technology Co ltd
Current assignee: Shenzhen Maimokang Medical Technology Co ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-04-05

Abstract

The invention discloses a breast tube mirror system, which comprises a superfine fiber mirror unit; the superfine fiber mirror unit comprises a fiber bundle group formed by combining an optical fiber bundle and an image fiber bundle, a superfine fiber lens arranged on the end part of the fiber bundle group and connected with the image fiber bundle, an inserting part, a connecting part, a conduit part and a branching part which are connected in sequence; the fiber bundle group is arranged in the insertion part, the connecting part, the conduit part and the branching part in a penetrating way, the superfine fiber lens is positioned in the end part of the insertion part far away from the connecting part, one end of the branching part far away from the conduit is provided with a light guide plug and an image guide plug, and the light guide fiber bundles and the image guide fiber bundles in the fiber bundle group are separated in the branching part and are respectively connected to the light guide plug and the image guide plug. The breast tube mirror system provided by the invention realizes image acquisition by adopting the superfine fiber lens, has higher image resolution and observation sensitivity, and can diagnose breast diseases more accurately.

Description

Milk tube mirror system

Technical Field

The invention relates to the technical field of medical equipment, in particular to a breast tube mirror system.

Background

The fiber mastoscope is one of the common inspection means and surgical instruments for the prior mammary gland surgery, and is commonly called as the mastoscope. The breast tube mirror is convenient to operate, small in wound, capable of directly viewing pathological changes, and capable of diagnosing breast pathological changes better. Meanwhile, in the diagnosis process of nipple discharge pathological changes, the nipple discharge pathological changes can be treated, and the condition of blockage of a mammary duct can be dredged, for example: plasma cell mastitis, hyperplasia of mammary glands, etc. Because the condition that the mammary duct is blocked possibly occurs to the patient, the mammary duct can be dredged simultaneously in the examination process, the local inflammation condition can be improved, the mammary surgery is avoided, and the operation pain of the patient can be relieved. In addition, through the breast tube microscopic examination, the biopsy can be performed on the suspicious malignant pathological tissues, the diagnosis positive rate can be improved, and the treatment opinion is provided for the later-stage operation treatment of patients.

However, the existing breast mirror system has some problems in use, such as unstable image quality, complex operation and the like. Thus, a new type of lacto-scope system is needed to improve the accuracy and efficiency of diagnosis.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide an improved breast tube mirror system.

The technical scheme adopted for solving the technical problems is as follows: a milk tube mirror system is provided, comprising a microfiberoptic unit; the superfine fiber mirror unit comprises a fiber bundle group formed by combining an optical fiber bundle and an image fiber bundle, a superfine fiber lens arranged on the end part of the fiber bundle group and connected with the image fiber bundle, an inserting part, a connecting part, a conduit part and a branching part which are connected in sequence;

the fiber bundle group is arranged in the insertion part, the connecting part, the conduit part and the branching part in a penetrating way, the superfine fiber lens is positioned in the end part of the insertion part far away from the connecting part,

the branch part is far away from one end of the catheter and is provided with a light guide plug and an image guide plug, and the optical fiber bundles and the image guide fiber bundles in the fiber bundle group are separated in the branch part and are respectively connected to the light guide plug and the image guide plug.

Preferably, the outer diameter of the superfine fiber lens is 0.2 mm-0.3 mm; the outer diameter of the insertion part is less than or equal to 0.5mm.

Preferably, the image fiber guiding bundle has more than 6000 optical fibers, and the diameter of the image fiber guiding bundle is 160-600 μm.

Preferably, the breast tube mirror system further comprises a mirror sheath unit which is connected with the connecting part in a matching way and sleeved outside the inserting part.

Preferably, the sheath unit comprises an operation handle, a sheath seat and a sheath tube, wherein the sheath tube is connected with the operation handle through the sheath seat;

the operating handle is sleeved and positioned outside the connecting part, the sheath tube is sleeved outside the inserting part, a gap is reserved between the sheath tube and the inserting part, and the gap is communicated with the inner cavity of the operating handle.

Preferably, the operating handle is provided with a first end and a second end which are opposite, the first end of the operating handle is connected with the sheath seat, and the second end of the operating handle is provided with a liquid injection connector, a gas injection connector and an optical fiber connector which face different directions;

the liquid injection connector is internally provided with a liquid injection channel communicated with the inner cavity of the operating handle, the gas injection connector is internally provided with a gas injection channel communicated with the inner cavity of the operating handle, and the operating handle is sleeved and positioned outside the connecting part by the optical fiber connector.

Preferably, the optical fiber connector is axially connected to the second end of the operating handle, the liquid injection connector and the gas injection connector are respectively connected to the second end of the operating handle at two opposite sides of the optical fiber connector, and an included angle is formed between the liquid injection connector and the gas injection connector and the optical fiber connector.

Preferably, the breast tube mirror system further comprises a protection tube sleeved outside the insertion part and detachably connected with the connection part.

Preferably, the protective tube has opposite first and second ends; the end part of the protection tube, which faces the first end of the connecting part, is provided with a plurality of first elastic pieces, the plurality of first elastic pieces are distributed at intervals along the circumferential direction of the protection tube and extend outwards, and each first elastic piece is inclined towards the central axis direction of the protection tube;

when the first end of the protection tube is matched with the periphery of the connecting part, the first elastic piece is abutted against the periphery surface of the connecting part.

Preferably, the first end of the protection tube is also provided with at least one second elastic sheet which is concave inwards towards the central axis direction of the protection tube; the second elastic sheet is spaced from the first elastic sheet in the axial direction of the protection tube;

when the first end of the protection tube is matched with the periphery of the connecting part, the second elastic piece is abutted against the periphery surface of the connecting part.

Preferably, the connecting part comprises a first connecting pipe section and a second connecting pipe section which are connected in the axial direction, the outer diameter of the first connecting pipe section is smaller than that of the second connecting pipe section, and a transitional step surface is formed at the connecting part of the first connecting pipe section and the second connecting pipe section; the first end of the protection tube is fitted on the outer periphery of the first connection tube section and is restrained at the side of the transition step surface.

The invention has the beneficial effects that: the superfine fiber lens is adopted to realize image acquisition, so that the image acquisition device has higher image resolution and observation sensitivity, and can diagnose breast diseases more accurately.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a breast mirror system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a microfiberoptic unit in a tube mirror system according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the micro fiber lens of FIG. 2 on the insertion portion;

FIG. 4 is a schematic view of the sheath tube and sheath hub of FIG. 1;

FIG. 5 is a schematic view of a transverse cross-sectional structure of the sheath unit of FIG. 1;

FIG. 6 is a schematic view of a tube for protecting an insertion portion of a breast mirror system according to an embodiment of the present invention;

fig. 7 is a schematic view of the fitting structure of the protection tube and the connection portion in fig. 6.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 3, a breast mirror system according to an embodiment of the present invention includes a microfiberoptic unit and a mirror sheath unit. The superfine fiber mirror unit is used for being inserted into the mammary gland during treatment or diagnosis, and simultaneously, the image is displayed on the image display system; the mirror sheath unit is assembled on the superfine fiber mirror unit and has at least the functions of holding, guiding and positioning for the superfine fiber mirror unit.

The microfiberoptic unit further includes a microfiber lens 10, a fiber bundle group (not shown), an insertion portion 20, a connection portion 30, a conduit portion 40, and a branching portion 50, wherein the branching portion 50 is provided with a light guide plug 52 and an image guide plug 51. The insertion portion 20, the connection portion 30, the conduit portion 40, and the branching portion 50 are connected in this order and communicate with each other. The fiber bundle group is formed by combining an optical fiber bundle and an image fiber bundle; the fiber bundle group is inserted into the insertion portion 20, the connection portion 30, the duct portion 40, and the branching portion 50, and one end portion of the fiber bundle group corresponds to the insertion portion 20, and is separated into an optical fiber bundle and an image fiber bundle at the branching portion 50 with respect to the other end portion. The light guide plug 52 and the image guide plug 51 are connected to the end of the branching portion 50 facing away from the duct portion 40, the image guide fiber bundle is connected from the branching portion 50 to the image guide plug and connected to the image display system through the image guide plug 51, and the optical fiber bundle is connected from the branching portion 50 to the light guide plug 52 and externally connected to the light source system through the light guide plug 52.

The ultra-fine fiber lens 10 is disposed on an end of the fiber bundle group and connected to the image guide bundle, and the ultra-fine fiber lens 10 is also disposed in an end of the insertion portion 20 remote from the connection portion 30. The end surface of the insertion portion 20 away from the connection portion 30 is a transparent end cap. The end of the optical fiber bundle corresponds to one side of the ultra-fine fiber lens 10 and is also in the end of the insertion portion 20 away from the connection portion 30.

In the invention, the superfine fiber lens 10 is adopted to realize the image acquisition with higher image resolution, and meanwhile, the observation sensitivity is high, so that the mammary gland diseases can be diagnosed more accurately.

The ultra-fine fiber lens 10 is implemented using a self-focusing optical lens. Alternatively, the outer diameter of the ultra fine fiber lens 10 is 0.2mm to 0.3mm to be set as large as possible to improve image clarity. The outer diameter of the insertion portion 20 is 0.5mm or less.

Further, the number of optical fibers like fiber guide bundles in the fiber bundle group can be increased to further improve pixels and image resolution. For example, the fibers like the fiber guide bundle are arranged in more than 6000, preferably about 1 ten thousand or 1 ten thousand, and the diameter of the entire fiber guide bundle is 160 μm to 600 μm, and the pixels are 1600 to 30000. Alternatively, a FIGH series S-type fiber from Japanese vine warehouse company may be used.

The number of optical fibers of the optical fiber bundles may be appropriately set in correspondence to the increase in the number of optical fibers like the optical fiber bundles in the fiber bundle group so that the entire fiber bundle group has a diameter of 0.5mm or less and can be accommodated in the insertion portion 20. For example, the optical fibers such as the guide fiber bundles are arranged in 1 ten thousand or about 1 ten thousand, and the number of the optical fibers of the guide fiber bundles may be 100 or about.

Specifically, the insertion portion 20 has a certain hardness and flexibility, such as a steel sheath made of steel material, and can support the fiber bundle group and drive the fiber bundle group to be inserted into the mammary duct for performing related diagnosis and other operations, and can also be bent within a certain range, so as to facilitate the transformation of the inspection angle, such as 40 degrees and the like.

The connection part 30 is made of a metal material and has a metal pipe structure with a certain hardness and supporting strength. The duct portion 40 is a flexible tube made of a flexible material, and is capable of being bent. One end of the conduit portion 40 may be fixed in the connecting portion 30 by means of tight fit and/or clamping, and a spring section 41 may be sleeved at the connecting portion to protect the conduit portion 40 and avoid the problem of breakage of the connecting portion due to bending.

The connection part 30 may structurally include a first connection pipe section 31 and a second connection pipe section 32 connected in an axial direction, the outer diameter of the first connection pipe section 31 being smaller than the outer diameter of the second connection pipe section 32, and a transition step surface 301 being formed at the connection of the first connection pipe section 31 and the second connection pipe section 32. In the embodiment shown in fig. 2, the connection 30 further comprises a third connection pipe section 33 connected to the second connection pipe section 32, the third connection pipe section 33 having an outer diameter larger than the outer diameter of the second connection pipe section 32.

The sheath unit is connected with the connecting part 30 in a matching way and sleeved outside the inserting part 20. The sheath unit may further include an operating handle 80, a sheath mount 90, and a sheath tube 100 which are sequentially connected in the axial direction. The operating handle 80 is positioned outside the connecting part 30 in a sleeved mode, and the sheath tube 100 is connected with the operating handle 80 through the sheath seat 90. The sheath tube 100 is sleeved outside the insertion part 20, and the end part of the insertion part 20 provided with the superfine fiber lens 10 extends out of the sheath tube 100 by a length of 1 mm-2 mm.

The operating handle 80 is sleeved and positioned outside the connecting part 30, the sheath tube 100 is sleeved outside the inserting part 20, a gap is reserved between the sheath tube 100 and the inserting part 20, and the gap is communicated with the inner cavity of the operating handle 80.

Specifically, the sheath tube 100 has a certain length and has a first end and a second end which are opposite to each other, and the sheath tube 100 is inserted onto the sheath holder 10 at the first end thereof to form a mirror sheath; the interior of the sheath 100 communicates with the interior of the sheath hub 10. The sheath 100 is correspondingly arranged outside the insertion part 20, has a supporting and guiding function on the insertion part 20, and an operator can drive the insertion part 20 to move and change angles in the mammary duct during the examination or diagnosis process through the operation handle 80 and the sheath 100.

The sheath tube 100 is made of a metal material having a certain hardness and corrosion resistance, such as stainless steel.

Referring to fig. 1 and 4, the sheath 100 may have graduations 101 on the outer circumferential surface thereof. Graduations 101 help more accurately locate the lesion location, thereby better formulating a treatment regimen; the position of the sheath can be accurately controlled in the operation process, so that surgical instruments can be more accurately guided, and the operation precision and effect are improved; the development of the lesions and the treatment effect can be recorded, so that a comparison basis is provided for doctors, and the evaluation of the treatment effect and the determination of whether further treatment is needed are facilitated; by observing the scale 101 on the sheath 100, the nature and extent of the lesion can be more easily judged, contributing to auxiliary diagnosis and treatment; the scale 101 can enable a doctor to find the lesion position more quickly, so that the operation efficiency is improved; the scale 101 can help students or novice doctors to better understand the operation process, and improve teaching efficiency.

In addition, a side hole may be formed at the second end of the sheath 100 to form a slit, if necessary. The incision can be used for rotary cutting, and samples (such as taking biopsies or brushing cytological specimens and the like) are conveniently taken during examination.

One or more side holes may be provided as desired, with multiple side holes being distributed at different locations on the sheath 100. The side holes may be polygonal, such as rectangular, openings.

The arrangement of the upper side hole of the sheath tube 100 can also bring the following advantages:

(1) The entering smoothness is improved: the mastoscope may encounter resistance when entering the breast duct, especially for ducts with greater curvature. The upper side hole of the sheath tube 100 can reduce the resistance during the entrance and improve the entrance smoothness.

(2) The operation is convenient: the side hole sharpening can make the operation of the breast tube mirror more flexible, and is convenient for steering and adjusting the angle in the breast catheter, thereby better observing the condition in the breast catheter.

(3) Improving the diagnosis accuracy: lesions in the mammary duct can be observed more clearly through the side holes, thereby improving the accuracy of diagnosis.

(4) The sample is convenient to take out: the side hole can facilitate the taking out of the sample in the observation process, such as taking biopsy or brushing cytological specimens, etc.

(5) Increase surgical safety: through the side opening arrangement, the accuracy and the safety of operation can be improved, and the risks of complications are reduced.

Referring to fig. 1 and 5, the operating handle 80 has a cylindrical structure with a certain length, and has a first end and a second end opposite to each other, and the operating handle 80 is connected to the sheath holder 90 at the first end thereof.

The first end of the operating handle 80 and the sheath holder 90 may further form an operating portion by which the movement, the orientation angle, etc. of the sheath can be controlled, and thus the movement, the observation angle, etc. of the insertion portion 20 and the ultra-fine fiber lens 10 at the end portion thereof can be controlled.

To improve the connection stability and the sealing property, the operating handle 80 and the sheath holder 90 are also connected by a luer connector 91. Luer 91 may further be preferably a 6% luer.

The seal ring 60 may further be provided with a seal ring 92 between the luer 91 and the outer periphery of the end of the operating handle 80 to prevent leakage of liquid or gas. The seal 92 is made of an elastic material, such as rubber or silica gel seal.

The second end of the operating handle 80 is provided with a liquid injection joint 81, a gas injection joint 82 and an optical fiber joint 83 facing different directions. The liquid injection joint 81 has a liquid injection passage 811 therein, and the liquid injection passage 811 communicates with the inner cavity of the operation handle 80 for injecting liquid. The gas injection joint 82 is provided with a gas injection channel 821, and the gas injection channel 821 is communicated with the inner cavity of the operating handle 80 for gas injection. The optical fiber connector 83 has an optical fiber passage 831 therein, and the optical fiber passage 831 communicates with the inner cavity of the operation handle 80 for insertion of the fiber bundle group, and the fiber bundle group is inserted from the optical fiber passage 831, and then passes through the operation handle 80, the sheath holder 90 and the sheath tube 100 to enter the insertion portion 20.

Wherein, the optical fiber connector 83 is axially connected to the second end of the operation handle 80, and the central axis of the optical fiber connector 83 is on the same straight line with the central axis of the operation handle 80. The liquid injection connector 81 and the gas injection connector 82 are respectively connected to the second end part of the operating handle 80 at two opposite sides of the optical fiber connector 83, an included angle is formed between the liquid injection connector 81 and the gas injection connector 82 and the optical fiber connector 83, and the liquid injection connector 81, the gas injection connector 82 and the optical fiber connector 83 are staggered in different directions respectively due to the formation of the included angle, so that the operation of liquid injection, gas injection and the like is facilitated. The included angle may be any angle, such as a right angle, an obtuse angle, or an acute angle, as long as it is ensured that the three joints do not interfere with each other.

During gas injection or liquid injection, gas or liquid enters the operation handle 80 from the corresponding gas injection channel 821 or liquid injection channel 811, flows out from the gap between the sheath tube 100 and the insertion portion 20 through the operation handle 80, and performs operations such as flushing the breast duct while not affecting the normal function of the fiber bundle group while being separated from the fiber bundle group.

When mated with the connection portion 30, the operating handle 80 is positioned outside the connection portion 30 mainly with the optical fiber connector 83 in a socket-joint manner. The outer circumference of the optical fiber connector 83 is also sleeved with an adjusting knob 832, and the fastening degree of the optical fiber connector 83 on the connecting part 30 can be adjusted through the adjusting knob 832.

Similarly, adjusting knobs 812 and 822 are respectively arranged outside the liquid injection joint 81 and the gas injection joint 82 and are respectively used for adjusting the fastening degree between the joint and the butted liquid injection pipe or gas injection pipe so as to achieve the aim of fastening connection or detachment.

When the breast mirror is used, after all parts of the breast mirror are assembled, the superfine fiber lens 10 is introduced into a breast duct under the guidance of a mirror sheath. Then, the movement and the observation angle of the ultra fine fiber lens 10 are controlled by the manipulation portion of the manipulation handle 80. At the same time, the position and angle of the sheath can be adjusted by operating the handle 80 to better view the interior of the breast catheter. Finally, the mammary gland diseases can be further diagnosed by imaging on a display screen through an imaging system and observing and analyzing images or videos.

After the breast mirror is used, the operating handle 80, the sheath holder 90 and the sheath tube 100 are removed, and the parts are cleaned and disinfected. The insertion portion 20 of the breast mirror needs to be stored properly.

In contrast, referring to fig. 6, the breast mirror of the present invention further includes a protectable tube 110, and the protectable tube 110 is detachably sleeved outside the insertion portion 20, so as to protect the insertion portion 20 and the fiber bundle group therein.

Preferably, the protection tube 110 has opposite first and second ends, and after being sleeved outside the insertion portion 20, the first end of the protection tube 110 faces toward the connection portion 30, and further fixation of the protection tube 110 outside the insertion portion 20 is achieved by mating connection with the connection portion 30.

Alternatively, the protection tube 110 and the connection portion 30 may be connected by a snap-fit connection, an elastic contact connection, or the like. In a preferred embodiment, as shown in fig. 6 and 7, the end of the protection tube 110 facing the first end of the connection portion 30 is provided with a plurality of first elastic pieces 111, and the plurality of first elastic pieces 111 are arranged at intervals along the circumference of the protection tube 110 and extend outwards along the axial direction of the protection tube 110, and each first elastic piece 111 is inclined towards the central axis direction of the protection tube 110, so that in a natural state, the maximum distance between the first elastic pieces 111 is smaller than the inner diameter of the protection tube 110. The first elastic pieces 111 include one first elastic piece 111, and two or more first elastic pieces 111.

When the first end of the protection tube 110 is fitted on the outer periphery of the connection portion 30, the connection portion 30 will prop the first elastic sheet 111 open when moving into the protection tube 110, and the first elastic sheet 111 is restored under the action of restoring force after moving into place, so as to abut against the outer peripheral surface of the connection portion 30, and form a clamping effect on the connection portion 30. The elastic engagement of the first elastic piece 111 can fix the protection tube 110 to the connection portion 30 and can be assembled and disassembled a plurality of times.

Preferably, the protection tube 110 is made of stainless steel material, and may be a stainless steel round tube. The arrangement of the plurality of first elastic pieces 111 on the end part of the protection tube 110 forms a petal-shaped bifurcation structure by arranging the plurality of first elastic pieces 111, so that the connection part 30 can be clamped, and the protection tube 110 and the connection part 30 are not easy to move relatively.

Further, in order to improve the clamping stability of the protection tube 110 and the connection portion 30, at least one second elastic sheet 112 may be further disposed on the first end of the protection tube 110, and the second elastic sheet 112 may be concave toward the central axis direction of the protection tube 110, and may be abutted against the connection portion 30 through the concave.

The second elastic piece 112 is spaced from the first elastic piece 111 in the axial direction of the protection tube 110; the second elastic sheet 112 may be directly cut on the side surface of the protection tube 110. When the first end of the protection tube 110 is fitted on the outer circumference of the connection part 30, the second elastic piece 112 abuts on the outer circumferential surface of the connection part 30.

The coupling connection part 30 has a multi-pipe connection form, and when the protection pipe 110 is fitted with the connection part 30, the first end of the protection pipe 110 is fitted on the outer circumference of the first connection pipe section 31 of the connection part 30 and is restrained at the side of the transition step surface 301. The first elastic piece 111 and the second elastic piece 112 are abutted against the first connecting pipe section 31.

Of course, according to the pipe diameter of the protection pipe 110, the first end of the protection pipe 110 may be matched with the outer periphery of the second connecting pipe section 32 of the connecting portion 30, so as to play a role of safety protection for the insertion portion 20.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A breast tube mirror system, comprising a microfiberoptic unit; the superfine fiber mirror unit comprises a fiber bundle group formed by combining an optical fiber bundle and an image fiber bundle, a superfine fiber lens arranged on the end part of the fiber bundle group and connected with the image fiber bundle, an inserting part, a connecting part, a conduit part and a branching part which are connected in sequence;

2. The breast mirror system of claim 1, wherein the outer diameter of the ultra-fine fiber lens is 0.2mm to 0.3mm; the outer diameter of the insertion part is less than or equal to 0.5mm; and/or the number of the groups of groups,

the image fiber guide bundle has more than 6000 optical fibers, and the diameter of the image fiber guide bundle is 160-600 mu m.

3. The breast pump system of claim 1, further comprising a sheath unit cooperatively coupled to the connection portion and disposed over the insertion portion.

4. A breast pump system according to claim 3, wherein said sheath unit comprises an operating handle, a sheath hub, said sheath being connected to said operating handle by said sheath hub;

5. The breast pump system of claim 4, wherein said operating handle has opposite first and second ends, said operating handle first end being connected to said sheath mount, said operating handle second end being provided with different facing liquid injection, gas injection and fiber optic connectors;

6. The breast pump system of claim 5, wherein said fiber optic connector is axially connected to a second end of said operating handle, said liquid and gas injection connectors are connected to said second end of said operating handle on opposite sides of said fiber optic connector, respectively, and said liquid and gas injection connectors form an included angle with said fiber optic connectors, respectively.

7. The breast mirror system of any one of claims 1 to 6, further comprising a protective tube sleeved outside the insertion portion and detachably connected to the connection portion.

8. The breast mirror system of claim 7, wherein the protective tube has opposite first and second ends; the end part of the protection tube, which faces the first end of the connecting part, is provided with a plurality of first elastic pieces, the plurality of first elastic pieces are distributed at intervals along the circumferential direction of the protection tube and extend outwards, and each first elastic piece is inclined towards the central axis direction of the protection tube;

9. The breast tube mirror system of claim 8, wherein the first end of the protective tube is further provided with at least one second spring piece recessed toward the central axis of the protective tube; the second elastic sheet is spaced from the first elastic sheet in the axial direction of the protection tube;

10. The breast pump system of claim 7, wherein said connection comprises first and second axially joined connection tube sections, said first connection tube section having an outer diameter smaller than an outer diameter of said second connection tube section, a junction of said first and second connection tube sections defining a transition step surface; the first end of the protection tube is fitted on the outer periphery of the first connection tube section and is restrained at the side of the transition step surface.