Telescopic hysteroscope
The design of the retractable hysteroscope allows for flexible adjustment of the insertion length, solving the problem of poor versatility of existing hysteroscopes and improving the flexibility and stability of the operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI AISHIYI MEDICAL TECH CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-05-19
AI Technical Summary
The length of the insertion part of the existing hysteroscope is fixed and cannot be flexibly adjusted according to actual needs, resulting in poor versatility.
A retractable hysteroscope was designed. By sliding the second outer tube section and the second inner tube section, combined with the design of the sealing ring, the length of the insertion part can be flexibly adjusted. The combination of the outer bushing and the inner bushing ensures the stability and rotation function of the insertion part.
It improves the versatility of hysteroscopy, enhances the flexibility of the insertion site and the reliability of operation, and reduces type restrictions.
Smart Images
Figure CN224251360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a medical device, and more particularly to a retractable hysteroscope. Background Technology
[0002] Minimally invasive surgery is becoming increasingly common in the field of surgery due to its shorter recovery time, shorter operation duration, and lower cost.
[0003] Minimally invasive surgery is typically performed by inserting instruments through a small incision or artificially created opening in the patient's body; hysteroscopy is one such example.
[0004] One problem with existing hysteroscopes is that the length of their insertion section is fixed, making it impossible to adjust them flexibly according to actual needs, which results in poor versatility.
[0005] Therefore, there is an urgent need for a retractable hysteroscope to overcome the above-mentioned shortcomings. Utility Model Content
[0006] The purpose of this invention is to provide a retractable hysteroscope, the length of which can be flexibly adjusted according to actual needs, thus having the advantage of better versatility.
[0007] To achieve the above objectives, the retractable hysteroscope of this utility model includes a handle and an elongated insertion part. The insertion part includes an outer tube and an inner tube placed within the outer tube. The outer tube includes a first outer tube segment whose tail end is assembled and connected to the handle, a second outer tube segment that is slidably fitted with the first outer tube segment, and a first sealing ring disposed between the first and second outer tube segments. The head end of the second outer tube segment also extends from the head end of the first outer tube segment. The inner tube includes a first inner tube segment whose tail end is assembled and connected to the handle, a second inner tube segment that is slidably fitted with the first inner tube segment, and a second sealing ring disposed between the first and second inner tube segments. The head end of the second inner tube segment also extends from the head end of the first inner tube segment and is placed within the second outer tube segment.
[0008] Compared with the prior art, by sliding the second outer tube segment relative to the first outer tube segment and the second inner tube segment relative to the first inner tube segment, the length of the insertion part can be flexibly adjusted according to actual needs. The first sealing ring seals the mating area of the first outer tube segment and the second outer tube segment, and the second sealing ring seals the mating area of the first inner tube segment and the second inner tube segment. Therefore, the retractable hysteroscope of this invention has better versatility, thereby reducing the types of retractable hysteroscopes of this invention.
[0009] Preferably, the second outer pipe section is slidably fitted inside the first outer pipe section, and the tail end of the first inner pipe section extends out from the tail end of the first outer pipe section.
[0010] Preferably, an annular first embedding groove is formed on the outer side wall of the second outer pipe section. The first embedding groove is arranged at the tail end of the second outer pipe section. The first sealing ring is partially embedded in the first embedding groove and also abuts against the inner side wall of the first outer pipe section.
[0011] Preferably, the first embedding grooves are a plurality of spaced-apart grooves, and each first embedding groove is fitted with a first sealing ring.
[0012] Preferably, the diameter of the first outer pipe section decreases from the tail end to the head end of the first outer pipe section, and the tail end of the second outer pipe section is provided with an outer limiting structure that is inclined toward the inner sidewall of the first outer pipe section. The outer limiting structure is also inclined toward the tail end face of the second outer pipe section.
[0013] Preferably, the head end of the second inner pipe section also extends from the head end of the second outer pipe section.
[0014] Preferably, the insertion portion further includes a tip for fixing the head ends of the second outer tube segment and the second inner tube segment together, wherein the internal space of the head end of the second inner tube segment is exposed through the tip.
[0015] Preferably, an annular second embedding groove is formed on the outer side wall of the second inner pipe section, the second embedding groove is arranged at the tail end of the second inner pipe section, the second sealing ring is partially embedded in the second embedding groove, and the second sealing ring also abuts against the inner side wall of the first inner pipe section.
[0016] Preferably, the second embedding grooves are a plurality of spaced-apart grooves, and each second embedding groove is fitted with a second sealing ring.
[0017] Preferably, the diameter of the first inner pipe section decreases from the tail end to the head end of the first inner pipe section, and the tail end of the second inner pipe section is provided with an inner limiting structure that is inclined toward the inner sidewall of the first inner pipe section. The inner limiting structure is also inclined toward the tail end face of the second inner pipe section.
[0018] Preferably, the retractable hysteroscope of this utility model further includes an outer bushing fitted inside the handle, a first inner bushing fitted inside the outer bushing and laterally sealed to the outer bushing, an end-sealing assembly fitted inside the outer bushing and sealing the tail end face of the first inner bushing, a second inner bushing sleeve fitted over the first outer tube segment, and a knob fitted over the first outer tube segment. The knob is located outside the handle and is fixedly connected to the second inner bushing. The tail end face of the second inner bushing abuts against the head end face of the first inner bushing. The tail ends of both the first outer tube segment and the first inner tube segment extend into the first inner bushing and are fitted and fixed to the first inner bushing, so that the knob can drive the insertion part to rotate through the first inner bushing and the second inner bushing.
[0019] Preferably, the handle has a protruding circumferential boss that surrounds the second inner bushing in a gap fit, and the second inner bushing has a blocking boss located between the circumferential boss and the first inner bushing, and the blocking boss also abuts against the circumferential boss. Attached Figure Description
[0020] Figure 1 This is a three-dimensional view of the retractable hysteroscope of this utility model.
[0021] Figure 2 yes Figure 1 The diagram shows the retractable hysteroscope adjusted to a position in the direction of shortening the length of the insertion section.
[0022] Figure 3 yes Figure 1 The diagram shows the retractable hysteroscope being adjusted to another position in the direction of increasing the length of the insertion section.
[0023] Figure 4 yes Figure 1 The diagram shows a plan view of the retractable hysteroscope viewed in the direction indicated by the arrow next to the insertion point.
[0024] Figure 5 It is along Figure 4 Internal view of the section cut along line AA.
[0025] Figure 6 yes Figure 5 Enlarged view of section B.
[0026] Figure 7 yes Figure 1 The diagram shown is a three-dimensional exploded view of the retractable hysteroscope.
[0027] Figure 8 yes Figure 7 A plan view behind the hidden part of the handle.
[0028] Figure 9 yes Figure 1 A three-dimensional view of the insertion section of a retractable hysteroscope.
[0029] Figure 10 yes Figure 9 The diagram shows the insertion section viewed in the direction indicated by the arrow next to it.
[0030] Figure 11 It is along Figure 9 Internal view of the section cut along the CC line.
[0031] Figure 12 yes Figure 11 Enlarged view of section D.
[0032] Figure 13 yes Figure 9 An exploded three-dimensional view of the insertion section is shown. Detailed Implementation
[0033] 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 other 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.
[0034] 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.
[0035] Please see Figure 1 and Figure 5The retractable hysteroscope 100 of this utility model includes a handle 10 and a long strip-shaped insertion part 20. The insertion part 20 includes an outer tube 21 and an inner tube 22 placed in the outer tube 21 to meet the requirement that the outer tube 21 surrounds the inner tube 22 and fits the inner tube 22 with a gap.
[0036] Combined Figure 11 and Figure 13 As an example, the outer tube 21 includes a first outer tube section 211 with its tail end 2112 assembled with the handle 10, a second outer tube section 212 that slides and fits with the first outer tube section 211, and a first sealing ring 213 disposed between the first outer tube section 211 and the second outer tube section 212. The first sealing ring 213 seals the mating area between the first outer tube section 211 and the second outer tube section 212 to ensure that there is no risk of leakage during the sliding and extending of the second outer tube section 212 relative to the first outer tube section 211. The head end 2121 of the second outer tube section 212 also extends from the head end 2111 of the first outer tube section 211 to facilitate the push and pull operation of the second outer tube section 212 by the operator.
[0037] The inner tube 22 includes a first inner tube section 221 whose tail end 2212 is assembled and connected to the handle 10, a second inner tube section 222 that slides and fits with the first inner tube section 221, and a second sealing ring 223 disposed between the first inner tube section 221 and the second inner tube section 222. The second sealing ring 223 seals the mating area between the first inner tube section 221 and the second inner tube section 222 to ensure that there is no risk of leakage during the sliding and telescoping process of the second inner tube section 222 relative to the first inner tube section 221. The head end 2221 of the second inner tube section 222 also extends from the head end 2211 of the first inner tube section 221 and is placed in the second outer tube section 212. Specifically, in Figures 1 to 3 , Figure 5 , Figures 7 to 9 and Figure 11 In this example, the second outer tube segment 212 is slidably fitted inside the first outer tube segment 211. This makes the diameter of the first outer tube segment 211 larger than the diameter of the second outer tube segment 212, thus giving the first outer tube segment 211, which is assembled with the handle 10, greater strength than the second outer tube segment 212. Consequently, the support of the first outer tube segment 211 for the second outer tube segment 212 is more stable and reliable. Obviously, depending on actual needs, the second outer tube segment 212 can also be slid outside the first outer tube segment 211, so it is not considered... Figures 1 to 3 , Figure 5 , Figures 7 to 9 and Figure 11As shown in the figure; in addition, the tail end 2212 of the first inner tube section 221 also extends from the tail end 2112 of the first outer tube section 211 to facilitate the assembly and connection operation of the tail end 2212 of the first inner tube section 221 with the handle 10; furthermore, the head end 2221 of the second inner tube section 222 also extends from the head end 2121 of the second outer tube section 212 to facilitate the push and pull operation of the second inner tube section 222 by the operator.
[0038] To ensure the synchronous sliding and expansion of the second outer pipe section 212 and the second inner pipe section 222, in Figures 1 to 3 , Figure 5 , Figures 7 to 11 ,by Figure 13 As an example, the insertion part 20 further includes a tip 23 for securing the head ends 2121 (2221) of both the second outer tube segment 212 and the second inner tube segment 222 together. The internal space 2223 of the head end 2221 of the second inner tube segment 222 is exposed through the tip 23 to allow external instruments to pass through and operate. More specifically, as follows:
[0039] like Figure 5 and Figures 11 to 13 As shown in the figure, as an example, an annular first embedding groove 2123 is provided on the outer side wall of the second outer pipe section 212. The first embedding groove 2123 is arranged at the tail end 2122 of the second outer pipe section 212, that is, the first embedding groove 2123 is formed by the outer side wall of the tail end 2122 of the second outer pipe section 212. At this time, the first sealing ring 213 is partially embedded in the first embedding groove 2123 to meet the requirement that the first sealing ring 213 partially protrudes outward from the outer side wall of the second outer pipe section 212, and also to allow the first sealing ring 213 to slide along with the second outer pipe section 212 during the sliding and stretching of the second outer pipe section 212 relative to the first outer pipe section 211. In addition, the first sealing ring 213 also abuts against the inner side wall 2113 of the first outer pipe section 211, as shown in the figure. Figure 12 As shown, this ensures the reliability of the seal between the second outer pipe section 212 and the first outer pipe section 211. Additionally, an annular second embedding groove 2224 is formed on the outer wall of the second inner pipe section 222. The second embedding groove 2224 is located at the tail end 2222 of the second inner pipe section 222, meaning it is formed by the outer wall of the tail end 2222 of the second inner pipe section 222. At this time, the second sealing ring 223 is partially embedded in the second embedding groove 2224 to satisfy the requirement that the second sealing ring 223 partially protrudes from the outer wall of the second outer pipe section 212. This also allows the second sealing ring 223 to slide along with the second inner pipe section 222 during the sliding and contraction of the second inner pipe section 222 relative to the first inner pipe section 221. Furthermore, the second sealing ring 223 also abuts against the inner wall 2213 of the first inner pipe section 221, as shown in the diagram. Figure 12 As shown.
[0040] like Figure 13 As shown in the illustration, as an example, there are three first recessed grooves 2123 spaced apart from each other. Each first recessed groove 2123 is fitted with a first sealing ring 213 to effectively increase the reliability of the sealing fit between the second outer pipe section 212 and the first outer pipe section 211. Furthermore, during the sliding extension of the second outer pipe section 212 relative to the first outer pipe section 211, the second outer pipe section 212 can slide to a position where only one first sealing ring 213 remains in sealing fit with the first outer pipe section 211, thus effectively ensuring the extension length of the second outer pipe section 212 relative to the first outer pipe section 211. Obviously, depending on actual needs, the number of first recessed grooves 2123 can also be two, four, five, or more. Therefore, it is not limited to... Figure 13 The above is the limit.
[0041] For example Figure 13 As shown in the illustration, as an example, there are three second recessed grooves 2224 spaced apart from each other. Each second recessed groove 2224 is fitted with a second sealing ring 223 to effectively increase the reliability of the sealing fit between the second inner tube section 222 and the first inner tube section 221. Furthermore, during the sliding extension of the second inner tube section 222 relative to the first inner tube section 221, the second inner tube section 222 can slide to a position where only one second sealing ring 223 remains in sealing fit with the first inner tube section 221, thus effectively ensuring the extension length of the second inner tube section 222 relative to the first inner tube section 221. Obviously, depending on actual needs, the number of second recessed grooves 2224 can also be two, four, five, or more. Therefore, it is not limited to... Figure 13 The above is the limit.
[0042] Combination Figure 11 and Figure 12 As an example, the diameter of the first outer pipe section 211 decreases from its tail end 2112 to its head end 2111. This design gives the first outer pipe section 211 a certain slope relative to its centerline; that is, the head end 2111 of the first outer pipe section 211 is smaller than its tail end 2112, thus making the first outer pipe section 211 tapering from its tail end 2112 to its head end 2111. Correspondingly, the tail end 2122 of the second outer pipe section 212 is provided with an outer limiting structure 2124 that is inclined toward the inner wall 2113 of the first outer pipe section 211. The outer limiting structure 2124 is also inclined toward the tail end face 2125 of the second outer pipe section 212. (See figure...) Figure 12 As shown, this design can effectively prevent the second outer pipe section 212 from accidentally falling off the first outer pipe section 211 during the sliding extension process, thus improving the reliability of operation.
[0043] Combined Figure 11 and Figure 12As an example, the diameter of the first inner pipe section 221 decreases from the tail end 2212 to the head end 2211. This design gives the first inner pipe section 221 a certain slope relative to its centerline, that is, the head end 2211 of the first inner pipe section 221 is smaller than the tail end 2212, thus making the first inner pipe section 221 constricted from the tail end 2212 to the head end 2211. Correspondingly, the tail end 2222 of the second inner pipe section 222 is provided with an inner limiting structure 2225 that is inclined toward the inner sidewall 2213 of the first inner pipe section 221. The inner limiting structure 2225 is also inclined toward the tail end face 2226 of the second inner pipe section 222. This design can effectively prevent the second inner pipe section 222 from accidentally falling off the first inner pipe section 221 during the sliding extension process, improving the reliability of operation.
[0044] Combination Figures 5 to 8 As an example, the retractable hysteroscope 100 of this utility model also includes an outer bushing 30 fitted inside the handle 10, a first inner bushing 40 fitted inside the outer bushing 30 and laterally sealed to the outer bushing 30, an end-sealing assembly 50 fitted inside the outer bushing 30 and sealing the tail end face 41 of the first inner bushing 40, a second inner bushing 60 sleeved on the first outer tube section 211, and a knob 70 sleeved on the first outer tube section 211. The knob 70 is located outside the handle 10 and is fixedly connected to the second inner bushing 60 to meet the requirement that the second inner bushing 60 rotates with the knob 70. The tail end face 61 of the second inner bushing 60 abuts against the head end face 42 of the first inner bushing 40 to prevent the first inner bushing 40 from sliding out of the outer bushing 30. The tail ends 2112 (2212) of both the first outer tube section 211 and the first inner tube section 221 extend into the first inner bushing 40 and are assembled and fixed to the first inner bushing 40. See the state below. Figure 6 As shown, the knob 70 can drive the insertion part 30 to rotate via the first inner bushing 40 and the second inner bushing 60, thereby facilitating the operator's adjustment of the angle of the insertion part 30. Specifically, in Figure 5 , Figure 6 and 8As shown in the figure, as an example, the handle 10 has a protruding circumferential boss 11 that surrounds the second inner bushing 60 in a gap fit. The second inner bushing 60 has a stop boss 62, which is located between the circumferential boss 11 and the first inner bushing 40. The stop boss 62 also abuts against the circumferential boss 11. With the abutment of the stop boss 62 and the circumferential boss 11, the tail end face 61 of the second inner bushing 60 abuts against the head end face 42 of the first inner bushing 40. The outer bushing 30 is fixed on the handle 10, preventing the rotation of the knob 70, the first inner bushing 40, the second inner bushing 60 and the insertion part 20 in the extension and retraction direction. This ensures the smooth and reliable rotation of the knob 70 through the first inner bushing 40 and the second inner bushing 60 to drive the insertion part 30. It should be noted that, since the first inner bushing 40 needs to rotate, the gap between the circumferential boss 11 and the first inner bushing 40 allows the first inner bushing 40 to rotate.
[0045] Compared with the prior art, by sliding the second outer tube section 212 relative to the first outer tube section 211 and by sliding the second inner tube section 222 relative to the first inner tube section 221, the length of the insertion part 30 can be flexibly adjusted according to actual needs. Figure 2 The insertion part 20 in the middle is relative Figure 1 The insertion part 20 in the middle is shortened, while Figure 3 The insertion part 20 in the middle is relative Figure 1 The insertion part 20 is lengthened. Furthermore, the first sealing ring 213 seals the mating area between the first outer tube section 211 and the second outer tube section 212, and the second sealing ring 223 seals the mating area between the first inner tube section 221 and the second inner tube section 222. Therefore, the retractable hysteroscope 100 of this invention has better versatility, thereby reducing the types of retractable hysteroscopes 100 of this invention.
[0046] 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. A telescopic hysteroscope comprising a handle and an elongated insertion portion, the insertion portion comprising an outer tube and an inner tube disposed in the outer tube, characterized in that, The outer tube includes a first outer tube segment whose tail end is assembled and connected to the handle, a second outer tube segment that is slidably sleeved with the first outer tube segment, and a first sealing ring disposed between the first outer tube segment and the second outer tube segment. The head end of the second outer tube segment also extends out from the head end of the first outer tube segment. The inner tube includes a first inner tube segment whose tail end is assembled and connected to the handle, a second inner tube segment that is slidably sleeved with the first inner tube segment, and a second sealing ring disposed between the first inner tube segment and the second inner tube segment. The head end of the second inner tube segment also extends out from the head end of the first inner tube segment and is placed in the second outer tube segment.
2. The telescopic hysteroscope according to claim 1, characterized in that, The second outer pipe section is slidably fitted inside the first outer pipe section, and the tail end of the first inner pipe section extends out from the tail end of the first outer pipe section.
3. The telescopic hysteroscope according to claim 2, characterized in that, The second outer pipe section has an annular first embedding groove on its outer side wall. The first embedding groove is located at the tail end of the second outer pipe section. The first sealing ring is partially embedded in the first embedding groove and also abuts against the inner side wall of the first outer pipe section. There are multiple first embedding grooves that are spaced apart from each other, and each first embedding groove is fitted with a first sealing ring.
4. The telescopic hysteroscope according to claim 2, wherein, The diameter of the first outer pipe section decreases from the tail end to the head end. The tail end of the second outer pipe section is provided with an outer limiting structure that is inclined toward the inner sidewall of the first outer pipe section. The outer limiting structure is also inclined toward the tail end face of the second outer pipe section.
5. The telescopic hysteroscope according to claim 1, wherein, The head end of the second inner pipe section also extends from the head end of the second outer pipe section.
6. The telescopic hysteroscope according to claim 1 or 5, characterized in that, The insertion portion further includes a tip for fixing the head ends of the second outer tube segment and the second inner tube segment together, wherein the internal space of the head end of the second inner tube segment is exposed through the tip.
7. The telescopic hysteroscope according to claim 1, characterized in that, The outer wall of the second inner pipe section is provided with an annular second embedding groove, which is located at the tail end of the second inner pipe section. The second sealing ring is partially embedded in the second embedding groove and also abuts against the inner wall of the first inner pipe section. There are multiple second embedding grooves that are spaced apart from each other, and each second embedding groove is provided with a second sealing ring.
8. The telescopic hysteroscope according to claim 1, characterized in that, The diameter of the first inner pipe section decreases from the tail end to the head end. The tail end of the second inner pipe section is provided with an inner limiting structure that is inclined toward the inner sidewall of the first inner pipe section. The inner limiting structure is also inclined toward the tail end face of the second inner pipe section.
9. The telescopic hysteroscope according to claim 1, wherein, Further comprising an outer sleeve assembled in the handle, a first inner sleeve assembled in the outer sleeve and sealed laterally with the outer sleeve, an end seal assembly assembled in the outer sleeve and sealed against a tail end face of the first inner sleeve, a second inner sleeve sleeved on the first outer tube segment, and a knob sleeved on the first outer tube segment, the knob being located outside the handle and fixedly connected with the second inner sleeve, a tail end face of the second inner sleeve abutting against a head end face of the first inner sleeve, and tails of both the first outer tube segment and the first inner tube segment extending into the first inner sleeve and fixedly assembled with the first inner sleeve, so that the knob can drive the insertion part to rotate through the first inner sleeve and the second inner sleeve.
10. The telescopic hysteroscope according to claim 9, characterized in that, The handle is convexly provided with a surrounding boss which gap-fittingly surrounds the second inner sleeve, and the second inner sleeve is provided with a resisting boss which is located between the surrounding boss and the first inner sleeve and abuts against the surrounding boss.