Hysteroscope and its fluid return mechanism

Abstract

The utility model discloses a hysteroscope and a liquid return mechanism thereof. The liquid return mechanism comprises a shell for the rear end of the insertion body of the hysteroscope to be fixedly inserted and arranged, and the shell has a second liquid inlet channel and a second liquid return channel that are independent of each other. The second liquid inlet channel is communicated with the inlet of the first liquid inlet channel of the insertion body, and the second liquid return channel is communicated with the outlet of the first liquid return channel of the insertion body. The first liquid return channel and the first liquid inlet channel are independent of each other, and the inlet of the first liquid return channel and the outlet of the first liquid inlet channel are located at the head end of the insertion body, and the outlet of the first liquid return channel and the inlet of the first liquid inlet channel are located at the rear end of the insertion body. The liquid return mechanism of the utility model has the advantages of being simple, efficient and small in space.

Description

Technical Field

[0001] The utility model relates to a medical device, in particular to a hysteroscope and a liquid return mechanism thereof. Background Art

[0002] Minimally invasive surgery is becoming more and more common in the surgical field due to its shorter recovery time, shorter duration of surgery and low cost. Minimally invasive surgery is usually performed by inserting instruments through small entrances or artificially formed openings in the patient. Hysteroscopic surgery is one of them. Hysteroscopy is mainly used in gynecology, such as fine needle puncture of ovarian cysts, pelvic adhesion separation, fallopian tube obstruction, twisting, adhesion correction, ectopic pregnancy surgery, uterine myoma removal, gynecological tumor surgery, subtotal and total hysterectomy for benign diseases. Hysteroscopic water insufflation is operated by water flow under the guidance of hysteroscopy. It is a technology that operates by water flow under the guidance of hysteroscopy. In this technology, the doctor will insert the hysteroscope into the woman's vagina and inject water into the uterine cavity under visual guidance to clean foreign objects or lesions in the uterine cavity, or assist in intrauterine surgery. This method has the advantages of being intuitive and precise, and can clearly observe the situation in the uterine cavity, and the operation is relatively safe. Therefore, the effectiveness of water passage and water return under hysteroscopy has a crucial impact on the treatment effect.

[0003] However, in the existing hysteroscopes, especially in disposable hysteroscopes, the structure for realizing the water passing and water returning functions has the defects of being complex and occupying a large space.

[0004] Therefore, there is an urgent need for a hysteroscope and a liquid return mechanism thereof to overcome the above-mentioned defects. Utility Model Content

[0005] One purpose of the utility model is to provide a hysteroscope liquid return mechanism which is simple, efficient and occupies little space.

[0006] Another object of the utility model is to provide a hysteroscope which is simple, efficient and occupies little space.

[0007] In order to achieve the above-mentioned purpose, the liquid return mechanism of the hysteroscope of the present invention is used to dock and communicate with the long strip insertion body of the hysteroscope. The insertion body is provided with a first liquid inlet channel and a first liquid return channel which are independent of each other, the inlet of the first liquid return channel and the outlet of the first liquid inlet channel are located at the head end of the insertion body, and the outlet of the first liquid return channel and the inlet of the first liquid inlet channel are located at the tail end of the insertion body. The liquid return mechanism of the present invention comprises a shell for the tail end of the insertion body to be fixedly inserted, the shell having a second liquid inlet channel and a second liquid return channel which are independent of each other, the second liquid inlet channel is connected with the inlet of the first liquid inlet channel, and the second liquid return channel is connected with the outlet of the first liquid return channel.

[0008] Compared with the prior art, since the housing has a second liquid inlet channel and a second liquid return channel that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel located at the rear end of the insert body, the second liquid return channel is connected to the outlet of the first liquid return channel located at the rear end of the insert body, and the first liquid return channel is independent of the first liquid inlet channel in the insert body, thereby forming a liquid flow route that enters from the liquid inlet channel and then flows out from the liquid return channel, so that the liquid return mechanism of the utility model has high liquid return efficiency and simple structure. In addition, since the second liquid inlet channel and the second liquid return channel are located in the housing, the space of the housing is saved, so that the space occupied by the liquid return mechanism of the utility model is small.

[0009] Preferably, the liquid return mechanism of the present invention also includes an outer shell located in the shell and outermost on the tail end of the insert, and a plurality of seals arranged between the tail end of the insert and the outer shell, the seals enable the gap between the outer shell and the tail end to define a first connecting cavity and a second connecting cavity that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel by means of the first connecting cavity, and the second liquid return channel is connected to the outlet of the first liquid return channel by means of the second connecting cavity.

[0010] Preferably, there are at least three sealing members arranged along the rear end of the insert, and the inlet of the first liquid inlet channel and the outlet of the first liquid return channel are located between two corresponding adjacent sealing members.

[0011] Preferably, a liquid inlet pipe and a liquid return pipe are assembled in the shell, the inner space of the liquid inlet pipe forms the second liquid inlet channel, and the inner space of the liquid return pipe forms the second liquid return channel.

[0012] Preferably, one end of the liquid inlet pipe away from the insert body is exposed to the outside, and one end of the liquid return pipe away from the insert body is exposed to the outside.

[0013] To achieve the above-mentioned purpose, the hysteroscope of the utility model includes a long strip insertion body and the aforementioned liquid return mechanism. The insertion body has a first liquid inlet channel and a first liquid return channel that are independent of each other, the inlet of the first liquid return channel and the outlet of the first liquid inlet channel are located at the head end of the insertion body, and the outlet of the first liquid return channel and the inlet of the first liquid inlet channel are located at the tail end of the insertion body. The liquid return mechanism includes a shell for the tail end of the insertion body to be fixedly inserted, and the shell has a second liquid inlet channel and a second liquid return channel that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel, and the second liquid return channel is connected to the outlet of the first liquid return channel.

[0014] Compared with the prior art, since the shell has a second liquid inlet channel and a second liquid return channel that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel located at the tail end of the insert body, the second liquid return channel is connected to the outlet of the first liquid return channel located at the tail end of the insert body, and the first liquid return channel is independent of the first liquid inlet channel in the insert body, thereby forming a liquid flow route that enters from the liquid inlet channel and then flows out from the liquid return channel, so that the liquid return of the hysteroscope of the utility model is efficient and simple in structure. In addition, since the first liquid inlet channel and the first liquid return channel are located in the insert body, and the second liquid inlet channel and the second liquid return channel are located in the shell, the space of the insert body and the shell is saved, so that the hysteroscope of the utility model occupies a small space and is suitable for disposable occasions.

[0015] Preferably, the liquid return mechanism further includes an outer shell located in the shell and outermost on the tail end of the insert, and a plurality of seals provided between the tail end of the insert and the outer shell, the seals allowing the gap between the outer shell and the tail end to define a first connecting cavity and a second connecting cavity that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel by means of the first connecting cavity, and the second liquid return channel is connected to the outlet of the first liquid return channel by means of the second connecting cavity.

[0016] Preferably, there are at least three seals arranged along the tail end of the insert, and the inlet of the first liquid inlet channel and the outlet of the first liquid return channel are located between the corresponding two adjacent seals; a liquid inlet pipe and a liquid return pipe are assembled in the shell, and the internal space of the liquid inlet pipe forms the second liquid inlet channel, and the internal space of the liquid return pipe forms the second liquid return channel.

[0017] Preferably, the insert comprises an inner tube, an outer tube arranged on the inner tube, and an end cap assembled between the inner tube and the outer tube, the internal space of the inner tube forms the first liquid inlet channel, the partial gap between the inner tube and the outer tube forms the first liquid return channel, and the end cap makes the first liquid return channel and the first liquid inlet channel independent of each other.

[0018] Preferably, the outlet of the first liquid inlet channel is a notch penetrating the end surface and side wall of the head end of the insert, and the inlet of the first liquid return channel penetrates the side wall of the head end of the insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of a hysteroscope having the liquid return mechanism of the utility model.

[0020] Figure 2 yes Figure 1 A three-dimensional exploded view of the hysteroscope is shown.

[0021] Figure 3 yes Figure 1 Plan view along the direction indicated by the arrow next to the insert.

[0022] Figure 4 is along Figure 3 Internal view cut along line AA.

[0023] Figure 5 yes Figure 4 Magnified view of part B. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with specific implementation examples and the accompanying drawings, and the technical solutions of the utility model are explained. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are explained to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. Now, embodiments of the utility model are described with reference to the accompanying drawings, and similar component numbers in the accompanying drawings represent similar components.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] See also Figures 1 to 4 The hysteroscope 100 of the utility model includes a liquid return mechanism 10 and a long strip insertion body 20, wherein the insertion body 20 has a first liquid inlet channel 21 and a first liquid return channel 22 which are independent of each other, wherein the inlet 221 of the first liquid return channel 22 and the outlet 212 of the first liquid inlet channel 21 are located at the head end 20a of the insertion body 20, and the outlet 222 of the first liquid return channel 22 and the inlet 211 of the first liquid inlet channel 21 are located at the tail end 20b of the insertion body 20.

[0027] The liquid return mechanism 10 includes a shell 10a in which the tail end 20b of the insert 20 is fixedly inserted, and the tail end 20b of the insert 20 is fixedly inserted in the shell 10a, so as to be supported and fixed by the shell 10a; the shell 10 has a second liquid inlet channel 11 and a second liquid return channel 12 that are independent of each other, the second liquid inlet channel 11 is connected to the inlet 211 of the first liquid inlet channel 21, and the second liquid return channel 12 is connected to the outlet 222 of the first liquid return channel 22; such a design allows external liquid (such as cleaning liquid) to flow along the second liquid inlet channel in the shell 10b 11 flows into the first liquid inlet channel 21 through the inlet 211 of the first liquid inlet channel 21, and then flows out from the outlet 212 of the first liquid inlet channel 21 located at the head end 20a of the insert 20, for cleaning the target; and the cleaned liquid flows into the first liquid return channel 22 from the inlet 222 of the first liquid return channel 22 located at the head end 20a of the insert 20, and then enters the second liquid return channel 12 at the shell 10a from the outlet 222 of the first liquid return channel 22, and finally is discharged to the outside from the second liquid return channel 12, thereby realizing the circulation process of liquid inflow and outflow. More specifically, as follows:

[0028] like Figure 4 and Figure 5 As shown, as an example, the liquid return mechanism 10 also includes an outer shell 10b located in the shell 10a and outermost on the tail end 20b of the insert 20, and a plurality of seals 10c provided between the tail end 20b of the insert 20 and the outer shell 10b. The seal 10b allows the gap between the outer shell 10b and the tail end 20b to define a first connecting cavity 13 and a second connecting cavity 14 that are independent of each other. The second liquid inlet channel 11 is connected to the inlet 211 of the first liquid inlet channel 21 by means of the first connecting cavity 13, and the second liquid return channel 12 is connected to the outlet 222 of the first liquid return channel 22 by means of the second connecting cavity 14. Such a design can more effectively save space in the shell 10a, and can also simplify the structure in which the second liquid inlet channel 11 is connected to the inlet 211 of the first liquid inlet channel 21, and the structure in which the second liquid return channel 12 is connected to the outlet 222 of the first liquid return channel 22. Specifically, in Figure 4 and Figure 5 As an example, the sealing members 10c are arranged along the rear end 20b of the insert 20, and the inlet 211 of the first liquid inlet channel 21 and the outlet 222 of the first liquid return channel 22 are located between the corresponding two adjacent sealing members 10c, for example. Figure 4 and Figure 5For example, the sealing members 10c are arranged from left to right and numbered from the first to the fourth pairs, the inlet 211 of the first liquid inlet channel 21 is located between the second and third sealing members 10c, the outlet 222 of the first liquid return channel 22 is located between the first and second sealing members 10c, and the fourth sealing member 10c is closely matched with the third sealing member 10c side by side to effectively improve the reliability of the sealing match between the outer sleeve 10b and the rear end 20b of the insert 20; obviously, the fourth sealing member 10c can also be deleted according to actual needs, so it is not used as Figure 4 and Figure 5 Limits shown.

[0029] like Figure 2 , Figure 4 and Figure 5 As shown in FIG. 1 , as an example, a liquid inlet pipe 10d and a liquid return pipe 10e are installed in the housing 10a. The internal space of the liquid inlet pipe 10d forms a second liquid inlet channel 11, and the internal space of the liquid return pipe 10e forms a second liquid return channel 12; such a design can simplify the implementation of the second liquid inlet channel 11 and the second liquid return channel 12 in the housing 10a. Specifically, Figure 4 As an example, one end (e.g., the lower end) of the liquid inlet pipe 10d away from the insert body 20 is exposed to the outside, and one end (e.g., the lower end) of the liquid return pipe 10e away from the insert body 20 is exposed to the outside, so as to facilitate the docking operation between the liquid inlet pipe 10d and the liquid return pipe 10e and the outside. Figure 1 , Figure 2 and Figure 4 As an example, the housing 10a is located away from the rear end 20b of the insert 20 (eg Figure 2 and Figure 4 The lower end of the housing 10a in the housing 10a is equipped with a liquid inlet switch 10f and a liquid outlet switch 10g. The liquid inlet switch 10f is used to open and close the end of the liquid inlet pipe 10d away from the insert body 20 to control the external liquid delivery operation to the liquid inlet pipe 10d; the liquid outlet switch 10g is used to open and close the end of the liquid return pipe 10e away from the insert body 20 to control the liquid in the second liquid return channel 12 to be discharged to the outside. For example, Figure 1 , Figure 2 and Figure 4 In the embodiment, the housing 10a is a handle structure, so that the operator can easily hold and operate the housing 10a. Figure 4 It is shown that the liquid inlet switch 10f and the liquid outlet switch 10g are installed at the position of the housing 10a away from the rear end 20b of the insert body 20. Obviously, according to actual needs, the liquid inlet switch 10f and the liquid outlet switch 10g can be deleted. When the liquid inlet switch 10f and the liquid outlet switch 10g are deleted, the end of the liquid inlet pipe 10d away from the insert body 20 and the end of the liquid return pipe 10e away from the insert body 20 are exposed to the outside, so it is not necessary to Figure 4 Limits shown.

[0030] like Figure 1 and Figure 4 As shown, as an example, the insert 20 includes an inner tube 25, an outer tube 26 mounted on the inner tube 25, and an end cap 27 assembled between the inner tube 25 and the outer tube 26. The internal space of the inner tube 25 forms a first liquid inlet channel 21, and a partial gap between the inner tube 25 and the outer tube 26 (this is because other components are also installed in the outer tube 26) forms a first liquid return channel 22, so as to effectively save the space of the insert 20; the end cap 27 makes the first liquid return channel 22 and the first liquid inlet channel 21 independent of each other.

[0031] like Figure 1 As shown, the outlet 212 of the first liquid inlet channel 21 is a notch that penetrates the end face 23 and the side wall 24 of the head end 20a of the insert body 20. The advantage of such a design is that, under the condition that the outer diameter of the head end 20a of the insert body 20 is the same, the device passing through the outlet 212 of the first liquid inlet channel 21 has more space for movement (such as bending). Similarly, under the condition that the outer diameter of the head end 20a of the insert body 20 is the same, the outer diameter of the head end 20a of the insert body 20 can be made smaller. In addition, the inlet 221 of the first liquid return channel 22 penetrates the side wall 24 of the head end 20a of the insert body 20, so that the liquid after cleaning the target enters the first liquid return channel 22 from the side of the head end 20a, effectively improving the use efficiency of the liquid; optionally, as an example, the inlet 221 of the first liquid return channel 22 penetrates the two opposite side walls 24 of the head end 20a of the insert body 20, so as to further improve the use efficiency of the liquid.

[0032] Compared with the prior art, since the housing 10a has the second liquid inlet channel 11 and the second liquid return channel 12 which are independent of each other, the second liquid inlet channel 11 is communicated with the inlet 211 of the first liquid inlet channel 21 located at the tail end 20b of the insert body 20, the second liquid return channel 12 is communicated with the outlet 222 of the first liquid return channel 22 located under the tail end 20b of the insert body 20, and the first liquid return channel 22 is independent of the first liquid inlet channel 21 in the insert body 20, thereby forming a liquid flow route that enters from the liquid inlet channel and then flows out from the liquid return channel, so that the liquid return of the hysteroscope 100 of the utility model is efficient and simple in structure. In addition, since the first liquid inlet channel 21 and the first liquid return channel 22 are located in the insert body 20, and the second liquid inlet channel 11 and the second liquid return channel 12 are located in the housing 10a, the space of the insert body 20 and the housing 10a is saved, so that the hysteroscope 100 of the utility model occupies a small space and is suitable for disposable occasions.

[0033] It should be noted that the above-mentioned liquid may be water, etc. In addition, since the more specific structures of the housing 10a and the insert 20 are well known in the art, they will not be described in detail here.

[0034] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved. At the same time, what is disclosed above is only the preferred embodiment of the utility model, and of course it cannot be used to limit the scope of rights of the utility model. Therefore, equivalent changes made according to the scope of the patent application of the utility model are still within the scope covered by the utility model.

Claims

1. A liquid return mechanism of a hysteroscope, used for docking and communicating with a long strip insertion body of the hysteroscope, wherein the insertion body has a first liquid inlet channel and a first liquid return channel which are independent of each other, wherein the inlet of the first liquid return channel and the outlet of the first liquid inlet channel are located at the head end of the insertion body, and the outlet of the first liquid return channel and the inlet of the first liquid inlet channel are located at the tail end of the insertion body, wherein the liquid return mechanism comprises a shell for the tail end of the insertion body to be fixedly inserted, characterized in that: The housing has a second liquid inlet channel and a second liquid return channel which are independent of each other. The second liquid inlet channel is communicated with the inlet of the first liquid inlet channel, and the second liquid return channel is communicated with the outlet of the first liquid return channel.

2. The liquid return mechanism according to claim 1, characterized in that: It also includes an outer shell located in the shell and sleeved on the tail end of the insert body, and a plurality of seals arranged between the tail end of the insert body and the outer shell, the seals define a first connecting cavity and a second connecting cavity independent of each other in the gap between the outer shell and the tail end, the second liquid inlet channel is connected with the inlet of the first liquid inlet channel by means of the first connecting cavity, and the second liquid return channel is connected with the outlet of the first liquid return channel by means of the second connecting cavity.

3. The liquid return mechanism according to claim 2, characterized in that: There are at least three sealing members arranged along the rear end of the insert, and the inlet of the first liquid inlet channel and the outlet of the first liquid return channel are located between two corresponding adjacent sealing members.

4. The liquid return mechanism according to claim 1, characterized in that: A liquid inlet pipe and a liquid return pipe are assembled in the shell, the inner space of the liquid inlet pipe forms the second liquid inlet channel, and the inner space of the liquid return pipe forms the second liquid return channel.

5. The liquid return mechanism according to claim 4, characterized in that: One end of the liquid inlet pipe away from the inserting body is exposed to the outside, and one end of the liquid return pipe away from the inserting body is exposed to the outside.

6. A hysteroscope, comprising an elongated insertion body, wherein the insertion body has a first liquid inlet channel and a first liquid return channel which are independent of each other, wherein the inlet of the first liquid return channel and the outlet of the first liquid inlet channel are located at the head end of the insertion body, and the outlet of the first liquid return channel and the inlet of the first liquid inlet channel are located at the tail end of the insertion body, characterized in that: The hysteroscope also includes a liquid return mechanism, which includes a shell in which the tail end of the insertion body is fixedly inserted, and the shell has a second liquid inlet channel and a second liquid return channel that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel, and the second liquid return channel is connected to the outlet of the first liquid return channel.

7. The hysteroscope according to claim 6, characterized in that: The liquid return mechanism also includes an outer shell located in the shell and sheathed on the tail end of the insert body, and a plurality of seals arranged between the tail end of the insert body and the outer shell, the seals enable the gap between the outer shell and the tail end to define a first connecting cavity and a second connecting cavity that are independent of each other, the second liquid inlet channel is connected to the inlet of the first liquid inlet channel by means of the first connecting cavity, and the second liquid return channel is connected to the outlet of the first liquid return channel by means of the second connecting cavity.

8. The hysteroscope according to claim 7, characterized in that: There are at least three sealing members arranged along the rear end of the insert, and the inlet of the first liquid inlet channel and the outlet of the first liquid return channel are located between the corresponding two adjacent sealing members; a liquid inlet pipe and a liquid return pipe are assembled in the shell, and the internal space of the liquid inlet pipe forms the second liquid inlet channel, and the internal space of the liquid return pipe forms the second liquid return channel.

9. The hysteroscope according to claim 6, characterized in that: The insert includes an inner tube, an outer tube mounted on the inner tube, and an end cap assembled between the inner tube and the outer tube. The internal space of the inner tube forms the first liquid inlet channel, and the partial gap between the inner tube and the outer tube forms the first liquid return channel. The end cap makes the first liquid return channel and the first liquid inlet channel independent of each other.

10. The hysteroscope according to claim 6, characterized in that: The outlet of the first liquid inlet channel is a notch penetrating the end surface and the side wall of the head end of the insert body, and the inlet of the first liquid return channel penetrates the side wall of the head end of the insert body.

Images