Inner tube of insertion part and hysteroscope with inner tube

Abstract

The utility model discloses an inner pipe of an insertion part. The inner pipe comprises a flat pipe section and a long-strip-shaped main body pipe section. The main body pipe section is provided with a near end and a far end which are oppositely arranged; the flat pipe section is connected with the far end of the main body pipe section, and the flatness of the flat pipe section changes towards the direction far away from the far end of the main body pipe section. The inner pipe of the insertion part can overcome the defect that a liquid passing gap is insufficient. In addition, the utility model further discloses a hysteroscope with the insertion part inner tube.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to an inner tube for insertion and a hysteroscope having the inner tube. Background Technology

[0002] As is well known, hysteroscopy is a minimally invasive gynecological diagnostic and therapeutic instrument used for the diagnosis, treatment, and follow-up of lesions within the uterine cavity. Hysteroscopy not only determines the location, size, appearance, and extent of lesions, but also allows for detailed observation of the tissue structure on the lesion's surface, and enables biopsy or targeted curettage under direct vision, greatly improving the accuracy of diagnosing intrauterine diseases and updating, developing, and compensating for the shortcomings of traditional diagnostic and treatment methods. For most patients suitable for diagnostic curettage, it is more reasonable and effective to first perform hysteroscopy to clarify the location of the lesion before performing biopsy or curettage.

[0003] The insertion section of a hysteroscope comprises an outer tube, an inner tube placed inside the outer tube, and a camera module. A certain gap must be maintained between the inner and outer tubes; this gap is generally used for the backflow of fluid from the uterine cavity. Because the dimensions of the outer tube are subject to national standards, manufacturers cannot arbitrarily change its inner and outer diameters. Furthermore, since both the outer and inner tubes of the insertion section are straight tubes, and the camera module occupies a portion of the gap between the outer and inner tubes, the clearance for fluid backflow is insufficient.

[0004] Therefore, there is an urgent need for an inner tube with an insertion part and a hysteroscope with such an inner tube to overcome the above-mentioned defects. Utility Model Content

[0005] One objective of this invention is to provide an inner tube for an insertion part to solve the defect of insufficient fluid passage gap.

[0006] Another objective of this invention is to provide a hysteroscope to address the deficiency of insufficient fluid passage space.

[0007] To achieve the above objectives, the inner tube of the insertion part of this utility model comprises a flat tube segment and an elongated main tube segment, wherein the main tube segment has a proximal end and a distal end arranged opposite to each other. The flat tube segment is connected to the distal end of the main tube segment, and the flatness of the flat tube segment varies in the direction away from the distal end of the main tube segment.

[0008] Compared with the prior art, since the inner tube of the insertion part of this utility model also includes a flat tube segment connected to the distal end of the main tube segment, and the flatness of the flat tube segment varies in the direction away from the distal end of the main tube segment, the inner tube of the insertion part of this utility model forms a more sufficient gap between the flat tube segment and the instrument; at the same time, it also forms a more sufficient gap between the inner tube of the insertion part of this utility model and the outer tube, thus solving the defect of insufficient fluid passage gap.

[0009] Preferably, the flatness of the flat pipe segment increases progressively toward the far end of the main pipe segment; the flat pipe segment extends in a curved manner toward the far end of the main pipe segment to form a curved structure.

[0010] Preferably, the cross-section of the main pipe section is symmetrical, while the cross-section of the flat pipe section is asymmetrical in the flat direction.

[0011] Preferably, the inner tube of the insertion part of this utility model further includes a flat straight tube segment connected to the end of the flat tube segment away from the main tube segment; the cross-section of the flat straight tube segment is asymmetrical in the flat direction.

[0012] Preferably, the main pipe section is a straight strip, and the cross-section of the main pipe section is an elliptical ring, a circular ring, or a regular polygonal ring.

[0013] Preferably, a notch is provided on the proximal end of the main pipe section, the notch is located on the side wall of the proximal end of the main pipe section, and the notch also penetrates the end wall surface of the proximal end of the main pipe section in the length direction of the main pipe section.

[0014] Preferably, the notch extends linearly along the length of the main pipe section.

[0015] Preferably, the side wall near the end of the main pipe section is provided with an inclined surface adjacent to the end wall surface and used to enlarge the notch.

[0016] Preferably, the side wall near the end of the main pipe section is provided with an arc-shaped transition surface for smooth transition between the end wall surface and the inclined surface.

[0017] To achieve the above objectives, the hysteroscope of this invention includes an insertion part, which comprises an outer tube and an inner tube, with the inner tube placed inside the outer tube.

[0018] Compared with the prior art, since the inner tube of the insertion part also includes a flat tube segment connected to the distal end of the main tube segment, and the flatness of the flat tube segment varies in the direction away from the distal end of the main tube segment, the inner tube of the insertion part forms a more sufficient gap between the flat tube segment and the instrument; at the same time, it also forms a more sufficient gap between the inner tube of the insertion part and the outer tube, thus solving the defect of insufficient fluid passage gap. Attached Figure Description

[0019] Figure 1 This is a plan view of the insertion part of the hysteroscope of this utility model from the distal end to the proximal end.

[0020] Figure 2 This is a perspective view of the inner tube of the insertion part of this utility model.

[0021] Figure 3yes Figure 2 An enlarged view of part A in the image.

[0022] Figure 4 yes Figure 2 An enlarged view of part B in the image.

[0023] Figure 5 yes Figure 2 Floor plan.

[0024] Figure 6 It is along Figure 5 Internal view of the section cut along the CC line.

[0025] Figure 7 It is along Figure 5 The internal view, with the inserted instruments, is shown by a section cut along the DD line.

[0026] Figure 8 It is along Figure 5 The internal view, cut along the EE line, shows the insertion of instruments. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to specific implementation examples and accompanying drawings, and the technical solutions of this utility model will be explained. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this utility model. However, this utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Embodiments of this utility model will now be described with reference to the accompanying drawings, in which similar element reference numerals represent similar elements.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please see Figure 1 The hysteroscope of this invention includes an insertion part 1000, which comprises an outer tube 200 and an inner tube 100 placed inside the outer tube 200. And combined with... Figure 2 The inner tube 100 includes a main tube section 10 and a flat tube section 20. The main tube section 10 is elongated and can optionally be... Figure 2 and Figure 5 In the example shown, the main tube 10 is a straight elongated strip to facilitate its manufacturing and processing; obviously, the main tube 10 can also be other shapes depending on actual needs, therefore, it is not considered... Figure 2 and Figure 5 The diagram shown is for illustrative purposes only. Additionally, the main tube 10 has a proximal end 11 and a distal end 12 arranged opposite to each other. It should be noted that the proximal end 11 is the end closer to the operator, and correspondingly, the distal end 12 is the end farther from the operator.

[0030] The flat tube segment 20 is connected to the distal end 12 of the main tube segment 10, thus connecting the flat tube segment 20 and the main tube segment 10 together. Alternatively, as an example, the flat tube segment 20 and the main tube segment 10 can form an integral structure, so that the flat tube segment 20 and the main tube segment 10 can be manufactured by integral molding, thereby simplifying their manufacturing process. Furthermore, the flatness of the flat tube segment 20 varies towards the distal end 12 of the main tube segment 10. Alternatively, as an example, the flatness of the flat tube segment 20 can increase towards the distal end 12 of the main tube segment 10. Obviously, depending on actual needs, the flatness of the flat tube segment 20 can also decrease towards the distal end 12 of the main tube segment 10. It is worth noting that the flatness here refers to the cross-section 21 of the flat tube segment 20 (see...). Figure 7 The ratio of one dimension to another dimension, for example, in Figure 7 In this context, flatness is determined by the ratio of D1 to D2, i.e., D1 divided by D2. Since D1 is greater than D2, the flatness value is greater than 1. The larger the ratio of D1 to D2, the greater the flatness. More specifically, as follows:

[0031] Combination Figure 3 and Figure 5 As an example, the flat pipe segment 20 extends in a curved direction away from the distal end 12 of the main pipe segment 10 to form a curved structure, such as a slightly curved structure, which allows for a smaller pipe diameter, achieving a comprehensive balance between achieving a smaller pipe diameter, better realizing the return water function, and the layout of components; for example, in Figure 1 In this design, because the flat tube segment 20 is offset upwards relative to the main tube segment 10, more space is left below between the flat tube segment 20 and the outer tube 200 for the placement of components (such as camera modules), thus facilitating the assembly of camera modules. Furthermore, in conjunction with... Figure 7As an example, the cross section 21 of the flat tube segment 20 is in the flat direction (see...). Figure 7 The vertical direction of the tube is asymmetrical, which makes one side of the flat tube segment 20 flatter than the other side. For example... Figure 7 The lower side of the flat tube section 20 is made flatter than the upper side.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, as an example, the inner tube 100 also includes a flat straight tube section 30 connected to the end of the flat tube section 20 away from the main tube section 10. Alternatively, as an example, the flat straight tube section 30 and the flat tube section 20 together form an integral structure to simplify the manufacturing process of the inner tube 100; in addition, the flat straight tube section 30 facilitates the interlocking assembly between the inner tube 100 and the external plastic end caps; furthermore, in conjunction with Figure 8 As an example, the cross-section 31 of the flat straight pipe section 30 is in the flat direction (see...). Figure 8 The vertical direction is asymmetrical, which makes one side of the flat straight pipe section 30 flatter than the other side, for example... Figure 8 The lower side of the flat straight pipe section 30 is made flatter than the upper side. It should be noted that the flatness of the flat straight pipe section 30 is determined by the ratio of D3 to D4.

[0033] like Figure 6 As shown, as an example, the cross-section 13 of the main pipe section 10 has a symmetrical structure to facilitate the manufacturing and processing of the main pipe section 10; furthermore, the cross-section 13 of the main pipe section 10 is annular, but obviously, it could be an elliptical annular or a regular polygonal annular depending on actual needs, so it is not considered... Figure 6 The above is the limit.

[0034] like Figure 2 , Figure 4 and Figure 5 As shown, as an example, a notch 14 is provided on the proximal end 11 of the main pipe section 10. The notch 14 is located on the side wall 111 of the proximal end 11 of the main pipe section 10, and the notch 14 also penetrates the end wall 112 of the proximal end 11 of the main pipe section 10 along its length. Therefore, the notch 14 allows the inner pipe 100 to be fitted and assembled with the external sealing shell, and also allows liquid to enter and exit the inner pipe 100 through the notch 14. Specifically, in Figure 4In this example, the notch 14 extends linearly along the length of the main tube segment 10 to simplify its fabrication. Furthermore, an inclined surface 113, adjacent to the end wall 112 and used to enlarge the notch 14, is provided on the side wall 111 of the near end 11 of the main tube segment 10. This inclined surface 113 improves the ease of assembly and disassembly between the inner tube 100 and the external sealing shell. More specifically, in... Figure 4 As an example, the side wall 111 of the near end 11 of the main tube section 10 is provided with an arc-shaped transition surface 114 for smooth transition between the end wall surface 112 and the inclined surface 113, which further improves the smoothness of the assembly and disassembly operation between the inner tube 100 and the external sealing shell.

[0035] Compared with the prior art, since the inner tube 100 of the insertion part of this utility model also includes a flat tube segment 20 connected to the distal end 12 of the main tube segment 10, and the flatness of the flat tube segment 20 varies in the direction away from the distal end 12 of the main tube segment 10, the inner tube 100 of the insertion part of this utility model forms a more sufficient gap between the flat tube segment 20 and the instrument 300. For example, in Figure 7 and Figure 8 In this process, when the instrument 300 is inserted into the inner tube 100, the flat tube segment 20 and the flat straight tube segment 30 each leave sufficient gaps with the instrument 300 in the left-right direction; at the same time, it also makes the gap between the inner tube 100 and the outer tube 200 of the insertion part of this utility model more sufficient, for example, in Figure 1 In this design, the inner tube 100 and the outer tube 200 have sufficient gaps in the left and right directions to address the defect of insufficient fluid passage. It is understood that since the hysteroscope of this invention includes the aforementioned inner tube 100, the hysteroscope of this invention also has the technical effects of the inner tube 100.

[0036] It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, the embodiments disclosed above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Therefore, equivalent variations made within the scope of the claims of this utility model are still within the scope of this utility model.

Claims

1. An inner tube of an insertion portion comprising an elongated body tube segment having oppositely arranged proximal and distal ends, characterized in that, The inner tube of the insertion part further comprises a flat tube segment connected to the distal end of the main tube segment, the flatness of the flat tube segment being arranged to vary in a direction away from the distal end of the main tube segment.

2. The inner tube of the insertion portion according to claim 1, characterized by The flatness of the flat tube segment is arranged to increase in a direction away from the distal end of the main tube segment; the flat tube segment is arranged to curve in a direction away from the distal end of the main tube segment to form a curved structure.

3. The inner tube of the insertion portion according to claim 1, characterized by The cross section of the main tube segment is a symmetrical structure, and the cross section of the flat tube segment is an asymmetrical structure in the flat direction.

4. The inner tube of the insertion section according to claim 1, characterized by The insertion part further comprises a flat straight tube segment connected to the distal end of the flat tube segment away from the main tube segment; the cross section of the flat straight tube segment is an asymmetrical structure in the flat direction.

5. The inner tube of the insertion portion according to claim 1, characterized by The main tube segment is a straight strip, and the cross section of the main tube segment is an elliptical ring, a circular ring or a regular polygonal ring.

6. The inner tube of the insertion portion according to claim 1, characterized by A notch is formed on the proximal end of the main tube segment, the notch is located on the side wall of the proximal end of the main tube segment, and the notch also penetrates the end wall of the proximal end of the main tube segment in the length direction of the main tube segment.

7. The inner tube of the insertion portion according to claim 6, characterized by The notch extends linearly in the length direction of the main tube segment.

8. The inner tube of the insertion portion according to claim 6, characterized by An inclined surface adjacent to the end wall of the proximal end of the main tube segment is arranged on the side wall of the proximal end of the main tube segment and is used to enlarge the notch.

9. The inner tube of the insertion portion according to claim 8, characterized by An arc-shaped transition surface is arranged on the side wall of the proximal end of the main tube segment and is used to smoothly transition the end wall and the inclined surface.

10. A hysteroscope comprising an insertion portion, the insertion portion comprising an outer tube, characterised in that, The insertion part further comprises the inner tube according to any one of claims 1 to 9, and the inner tube is arranged in the outer tube.

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