Splicing type three-way connector, handle and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a splicing type three-way connector, a handle and an endoscope, the splicing type three-way connector comprises a first base body and a second base body, the near end of the first base body is provided with a negative pressure channel and an instrument channel, the far end of the first base body is provided with a first cavity, and the near end of the second base body is provided with a second cavity. The first cavity and the second cavity form a containing cavity, a butt joint channel is arranged at the far end of the second base body, and the section size of the second cavity is gradually reduced from the near end to the far end. The accommodating cavity is arranged to provide sufficient steering activity space for the treatment instrument, and the design that the sectional dimension of the second cavity is gradually reduced from the near end to the far end is matched, so that the treatment instrument is guided, and the passing performance of the treatment instrument is improved; meanwhile, the splicing end face of the first base body and the splicing end face of the second base body are prevented from making direct contact with the treatment instrument, the passing performance of the splicing type three-way connector to the treatment instrument is improved, and the use safety and convenience of the endoscope are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a spliced ​​three-way connector, a handle and an endoscope. Background Art

[0002] An endoscope is a medical device used in modern surgical operations, comprising an operating handle and an insertion part. The insertion part can enter the human body through a human cavity or a surgical incision, and a camera module at the far end of the insertion part obtains internal image information of the human body to help doctors determine the location of lesions in the patient's body and the tissue structure characteristics of the lesion location; a three-way connector is provided on the operating handle, and the three-way connector includes a negative pressure channel, an instrument channel, and a docking channel connected to the insertion part. The negative pressure channel mainly cooperates with the insertion part to extract fluid accumulated in the body cavity, and the instrument channel mainly works with the insertion part to insert a treatment instrument to sample human tissue or deliver therapeutic substances.

[0003] Three-way connectors are generally injection molded. In order to reduce costs, a splicing design can be adopted for the three-way connector. The two halves are injection molded separately and then spliced ​​for use, thereby improving the injection molding quality and efficiency and reducing production costs. However, in the process of realizing the present invention, the applicant found that the three-way connector with a splicing design affects the normal loading of the treatment instrument and brings inconvenience to the use of the endoscope. Utility Model Content

[0004] The purpose of this application is to provide a spliced ​​three-way connector, a handle and an endoscope to solve the above technical problems existing in the prior art, mainly including the following three aspects:

[0005] According to a first aspect of the present application, there is provided a spliced ​​three-way connector for an endoscope, comprising a first substrate and a second substrate, wherein the first substrate and the second substrate are detachably connected, a negative pressure channel and an instrument channel are arranged at a proximal end of the first substrate, a first cavity is arranged at a distal end of the first substrate, the negative pressure channel and the instrument channel are respectively connected to the first cavity, a second cavity is arranged at a proximal end of the second substrate, the first cavity and the second cavity constitute a accommodating cavity, the minimum spacing between the inner wall of the distal port of the first cavity and the axis of the instrument channel is greater than the inner diameter of the distal port of the instrument channel, a docking channel is arranged at the distal end of the second substrate, the docking channel is connected to the second cavity, and the cross-sectional size of the second cavity gradually decreases from the proximal end to the distal end.

[0006] Furthermore, a relief step corresponding to the instrument channel is provided in the first cavity, and the relief step is used to avoid the treatment instrument;

[0007] The axis of the docking channel is perpendicular to the distal end surface of the first substrate.

[0008] Further, a protrusion is arranged on one of the distal end of the first substrate and the proximal end of the second substrate, and a groove matching the protrusion is arranged on the other of the distal end of the first substrate and the proximal end of the second substrate.

[0009] Furthermore, the protruding direction of the protruding portion is parallel to the axis of the docking channel.

[0010] Furthermore, the protrusion is an annular structure, and the protrusion is arranged around the accommodating cavity.

[0011] Furthermore, the axis of the docking channel is parallel to the peripheral wall of the protrusion.

[0012] Further, the axis of the docking channel is perpendicular to the end surface of the protrusion;

[0013] And / or, there is a gap between the end surface of the protrusion and the inner wall of the groove, and the gap is used to fill the glue.

[0014] Furthermore, the negative pressure channel and the docking channel are coaxially arranged.

[0015] A second aspect of the present application provides a handle, comprising a shell and the above-mentioned spliced ​​three-way connector, wherein the spliced ​​three-way connector is arranged at the distal end of the shell.

[0016] A third aspect of the present application provides an endoscope, comprising an insertion portion and the above-mentioned handle, wherein the distal end of the docking channel is connected to the proximal end of the insertion portion.

[0017] Compared with the prior art, the present invention has at least the following technical effects:

[0018] The present invention provides ample turning space for the treatment instrument by setting up an accommodating cavity, and cooperates with the design that the cross-sectional size of the second cavity gradually decreases from the proximal end to the distal end, so as to guide the treatment instrument and improve the passing performance of the treatment instrument; at the same time, by forming an avoidance space for the treatment instrument at the joint of the first substrate and the second substrate, the splicing end faces of the first substrate and the second substrate are prevented from directly contacting the treatment instrument, thereby increasing the passing performance of the splicing three-way connector for the treatment instrument and improving the safety and convenience of endoscope use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the spliced ​​three-way connector of the utility model;

[0021] Figure 2 It is a side view of the spliced ​​three-way connector of the utility model;

[0022] Figure 3 yes Figure 2 Middle AA section view;

[0023] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the first substrate of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the second substrate of the utility model;

[0026] Figure 7 It is a schematic diagram of the internal structure of the spliced ​​three-way connector of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the endoscope of the utility model;

[0028] In the figure,

[0029] 10. Spliced ​​three-way connector; 110. First base; 111. Groove; 120. Second base; 121. Protrusion; 131. Negative pressure channel; 132. Instrument channel; 133. Docking channel; 140. Accommodating cavity; 141. First cavity; 142. Second cavity; 151. Avoidance step; 20. Shell; 30. Insertion portion; 40. Treatment instrument. DETAILED DESCRIPTION

[0030] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In addition, in the present invention, "proximal end" and "distal end" refer to the far and near positions of the structure relative to human operation in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the perspective of realizing the principles of the present invention, and should not deviate from the essence of the present invention.

[0035] An endoscope is a medical device used in modern surgical operations, including an operating handle and an insertion portion. The insertion portion can enter the human body through a human cavity or a surgical incision. The user can adjust the posture of the active bending section at the distal end of the insertion portion by turning the lever on the operating handle, so that the camera module at the distal end of the insertion portion can obtain image information of the internal tissues of the human body from different angles, helping doctors to determine the location of the lesion in the patient's body and the tissue structure characteristics of the lesion location; and a three-way connector is provided on the operating handle, and the three-way connector includes a negative pressure channel, an instrument channel, and a docking channel connected to the insertion portion. During use, when it is necessary to treat the accumulated fluid in the body cavity, the user can connect the negative pressure source with the negative pressure channel so that the accumulated fluid in the body cavity can be extracted through the cooperation of the negative pressure channel and the insertion portion; when it is necessary to sample human tissue or deliver therapeutic substances to the human body, the user can insert the treatment instrument through the instrument channel, reach the target position in the body cavity through the insertion portion, and sample human tissue or deliver therapeutic substances.

[0036] In the prior art, injection molding is generally used to produce three-way connectors. With the upgrading and optimization, the structure of the three-way connector tends to be complicated, resulting in increased difficulty and cost of injection molding. Therefore, in order to reduce the cost, a splicing structure design can be adopted for the three-way connector, and the two halves are injection molded separately, and then the two halves are spliced ​​into a complete three-way connector for use, thereby reducing the production cost and injection molding difficulty, and improving the injection molding quality and efficiency; and the applicant found in the process of realizing the present invention that because the instrument channel is used as a side channel to connect the docking channel, and the cross-sectional size of the disposal instrument is slightly smaller than In order to achieve stable insertion of the treatment instrument, the treatment instrument is generally controlled to be gradually inserted along the inner wall of the instrument channel during the insertion process. However, for a three-way connector with a splicing design, it is difficult to achieve a completely smooth transition at the joint of the two halves due to the limitations of processing technology and processing costs. As a result, when the operator controls the treatment instrument to be gradually inserted along the inner wall of the instrument channel, the splicing end faces of the two halves will increase the insertion resistance of the treatment instrument, which will not only affect the normal insertion of the treatment instrument, but also increase the wear between the distal end of the treatment instrument and the three-way connector, reducing the service life of the treatment instrument and the three-way connector. In order to solve the problem that the three-way connector with a splicing design hinders the insertion of the treatment instrument, the present application provides a splicing three-way connector that can improve the passing performance of the treatment instrument, and the specific structure is shown in the following embodiment.

[0037] Embodiment 1:

[0038] The present application embodiment provides a spliced ​​three-way connector for an endoscope, such as Figure 1 to Figure 4As shown, it includes a first substrate 110 and a second substrate 120, which are detachably connected. A negative pressure channel 131 and an instrument channel 132 are provided at the proximal end of the first substrate 110, and a first cavity 141 is provided at the distal end of the first substrate 110. The negative pressure channel 131 and the instrument channel 132 are communicated with the first cavity 141 respectively. A second cavity 142 is provided at the proximal end of the second substrate 120. The first cavity 141 and the second cavity 142 constitute a accommodating cavity 140. The minimum distance between the inner wall of the distal end port of the first cavity 141 and the axis of the instrument channel 132 is greater than the inner diameter of the distal end port of the instrument channel 132. A docking channel 133 is provided at the distal end of the second substrate 120. The docking channel 133 is communicated with the second cavity 142, and the cross-sectional size of the second cavity 142 gradually decreases from the proximal end to the distal end along the axial direction of the docking channel 133.

[0039] During use, when it is necessary to load a treatment instrument through the spliced ​​three-way connector 10, since the accommodating cavity 140 is provided in the base body, when controlling the treatment instrument to pass through the instrument channel 132 into the accommodating cavity 140, on the one hand, the accommodating cavity 140 can provide ample turning space for the treatment instrument, and with the design that the cross-sectional size of the second cavity 142 gradually decreases from the proximal end to the distal end, the treatment instrument is guided by the inner wall of the second cavity 142 and guided into the docking channel 133, thereby improving the passing performance of the treatment instrument; on the other hand, based on the minimum spacing between the inner wall of the distal port of the first cavity 141 and the axis of the instrument channel 132 is greater than the inner diameter of the distal port of the instrument channel 132, correspondingly, the second cavity 141 is The minimum distance between the inner wall of the proximal port 142 and the axis of the instrument channel 132 is also greater than the inner diameter of the distal port of the instrument channel 132, that is, the cross-sectional passing dimension of the joint of the first substrate 110 and the second substrate 120 is designed to be larger than the passing dimension of the distal port of the instrument channel 132. The joint of the first substrate 110 and the second substrate 120 forms an avoidance space for the treatment instrument, thereby preventing the spliced ​​end faces of the first substrate 110 and the second substrate 120 from directly contacting the treatment instrument that passes through the instrument channel 132, thereby avoiding the situation in the prior art that the spliced ​​end faces will increase the loading resistance of the treatment instrument, increasing the passing performance of the spliced ​​three-way connector 10 for the treatment instrument, and improving the safety and convenience of endoscope use.

[0040] In order to improve the passing performance of the spliced ​​three-way connector 10 for the treatment equipment, Figure 3As shown, an avoidance step 151 corresponding to the instrument channel 132 can be provided in the first cavity 141, and the avoidance step 151 is used to avoid the treatment instrument; based on this structure, when the treatment instrument enters the first cavity 141 from the instrument channel 132, the avoidance step 151 is utilized to expand the activity space of the treatment instrument passing through the instrument channel 132, thereby avoiding the connection end face of the instrument channel 132 and the first cavity 141 from causing obstruction to the insertion process of the treatment instrument, thereby increasing the passing performance of the treatment instrument.

[0041] In some embodiments, in the accommodating chamber 140, an extension channel of the distal end of the instrument channel 132 in the accommodating chamber 140, an extension channel of the distal end of the negative pressure channel 131 in the accommodating chamber 140, and an extension channel of the proximal end of the docking channel 133 in the accommodating chamber 140 can be set, all of which are included in the accommodating chamber 140, thereby ensuring that the disposal instrument can be inserted into the docking channel in the accommodating chamber 140 in an orderly manner, and the absorbent in the docking channel 133 can be smoothly sucked into the negative pressure channel 131.

[0042] In order to ensure the smooth extraction of the accumulated fluid in the body cavity, the axis of the docking channel 133 can be set perpendicular to the distal end surface of the first substrate 110 (the first cavity 141 is arranged on the distal end surface of the first substrate 110), so that the absorbent in the docking channel 133 can be sucked into the negative pressure channel 131, thereby improving the suction efficiency and suction effect of the absorbent.

[0043] In order to facilitate the splicing of the first substrate 110 and the second substrate 120 into a complete splicing type three-way connector 10, as shown in FIG. Figure 5 to Figure 7 As shown, a protrusion 121 can be set at the proximal end of the second substrate 120, and a groove 111 matching the protrusion 121 can be set at the distal end of the first substrate 110. The protrusion 121 and the groove 111 cooperate to achieve precise docking between the first substrate 110 and the second substrate 120, thereby improving the stability of the splicing structure of the first substrate 110 and the second substrate 120.

[0044] In some embodiments, in order to facilitate the splicing of the first base 110 and the second base 120 into a complete splicing-type three-way connector 10, a protrusion 121 can be set on the distal end of the first base 110, and a groove 111 matching the protrusion 121 can be set at the proximal end of the second base 120. The protrusion 121 and the groove 111 cooperate to achieve precise docking between the first base 110 and the second base 120, thereby improving the stability of the splicing structure of the first base 110 and the second base 120.

[0045] In order to ensure the smooth extraction of the accumulated fluid in the body cavity, the negative pressure channel 131 and the docking channel 133 may be coaxially arranged.

[0046] In order to ensure the coaxiality of the negative pressure channel 131 and the docking channel 133 after splicing, the protruding direction of the protrusion 121 can be set parallel to the axis of the docking channel 133, and the cooperation between the protrusion 121 and the groove 111 can be used to achieve pre-positioning during the docking process, so that the first substrate 110 and the second substrate 120 can maintain or gradually transition to the coaxiality of the negative pressure channel 131 and the docking channel 133 during the splicing process, thereby ensuring that the absorbent is accurately sucked from the docking channel 133 into the negative pressure channel 131, thereby improving the negative pressure absorption efficiency and negative pressure absorption effect of the absorbent.

[0047] To improve the sealing performance of the accommodating cavity 140, as Figure 6 and Figure 7 As shown, the protrusion 121 can be set as an annular structure, and the protrusion 121 is set around the accommodating cavity 140. The protrusion 121 and the inner wall of the groove 111 cooperate with each other to increase the splicing area between the first substrate 110 and the second substrate 120, increase the obstacle of fluid exchange between the accommodating cavity 140 and the external environment through the splicing, thereby improving the sealing effect of the accommodating cavity 140.

[0048] In some embodiments, a plurality of protrusions 121 may be provided, and the plurality of protrusions 121 are arranged around the accommodating cavity 140 , so as to ensure a stable connection between the first substrate 110 and the second substrate 120 .

[0049] To further improve the coaxiality of the negative pressure channel 131 and the docking channel 133, as Figure 3 and Figure 4 As shown, the axis of the docking channel 133 can be set to be parallel to the peripheral wall of the protrusion 121, and correspondingly, the inner peripheral wall of the groove 111 is also parallel to the axis of the docking channel 133. Then, during the splicing process of the first substrate 110 and the second substrate 120, the protrusion 121 is inserted along the depth direction of the groove 111, and is constrained by the mutual limitation between the peripheral wall of the protrusion 121 and the inner peripheral wall of the groove 111, so that the first substrate 110 and the second substrate 120 maintain or gradually tend to achieve the coaxiality of the negative pressure channel 131 and the docking channel 133 during the splicing process, thereby avoiding the process of adjusting the position of the first substrate 110 and the second substrate 120 for the purpose of coaxiality of the negative pressure channel 131 and the docking channel 133 after splicing.

[0050] To facilitate the rapid splicing of the first substrate 110 and the second substrate 120, the axis of the docking channel 133 can be perpendicular to the end face of the protrusion 121. The docking direction can be quickly identified through the end face of the protrusion 121 and the protruding direction of the protrusion 121. At the same time, the mutual wear between the protrusion 121 and the inner wall of the groove 111 during the docking process is reduced, thereby ensuring the sealing of the accommodating cavity 140 after docking.

[0051] In order to improve the structural stability of the first substrate 110 and the second substrate 120 after being spliced, as Figure 3 , Figure 4 and Figure 7 As shown, a gap can be provided between the end face of the protrusion 121 and the inner wall of the groove 111, and the gap is used to fill with glue. Before splicing, glue can be applied to the end face of the protrusion 121, and then the first substrate 110 and the second substrate 120 are spliced, and the end face of the protrusion 121 and the inner wall of the groove 111 are glued together by glue, thereby improving the connection stability between the protrusion 121 and the inner wall of the groove 111, and increasing the structural stability and safety of the splicing type three-way connector 10.

[0052] Example 2

[0053] The present application embodiment provides a handle, such as Figure 8 As shown, it includes a housing 20 and the splicing type three-way connector 10 in embodiment 1, and the splicing type three-way connector 10 is arranged at the distal end of the housing 20.

[0054] Example 3

[0055] The present application embodiment provides an endoscope, such as Figure 8 As shown, it includes an insertion portion 30 and the handle in Example 2, and the distal end of the docking channel 133 is connected to the proximal end of the insertion portion 30.

[0056] When the treatment instrument 40 is inserted, the treatment instrument 40 passes through the instrument channel 132, the accommodating cavity 140 and the docking channel 133 in sequence, and enters the proximal end of the insertion part 30 through the docking channel 133, and passes out from the distal end of the insertion part 30, thereby processing the human tissue; when the absorbent in the body cavity is sucked, the absorbent is sucked at the distal end of the insertion part 30, and then passes through the proximal end of the insertion part 30, the docking channel 133, the accommodating cavity 140 and the negative pressure channel 131 in sequence, and flows to the negative pressure source to realize the suction of the absorbent.

[0057] It should be noted that the endoscope in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spliced ​​three-way connector for an endoscope, characterized in that: The invention comprises a first substrate (110) and a second substrate (120), wherein the first substrate (110) and the second substrate (120) are detachably connected, a negative pressure channel (131) and an instrument channel (132) are arranged at the proximal end of the first substrate (110), a first cavity (141) is arranged at the distal end of the first substrate (110), the negative pressure channel (131) and the instrument channel (132) are respectively connected to the first cavity (141), and a second negative pressure channel (131) and an instrument channel (132) are arranged at the proximal end of the second substrate (120). The first cavity (141) and the second cavity (142) constitute a receiving cavity (140); the minimum distance between the inner wall of the distal end port of the first cavity (141) and the axis of the instrument channel (132) is greater than the inner diameter of the distal end port of the instrument channel (132); a docking channel (133) is provided at the distal end of the second base body (120); the docking channel (133) is communicated with the second cavity (142); and the cross-sectional size of the second cavity (142) gradually decreases from the proximal end to the distal end.

2. The splicing type three-way connector according to claim 1, characterized in that: An avoidance step (151) corresponding to the instrument channel (132) is provided in the first cavity (141), and the avoidance step (151) is used to avoid the treatment instrument (40); The axis of the docking channel (133) is perpendicular to the distal end surface of the first base body (110).

3. The splicing type three-way connector according to claim 2, characterized in that: A protrusion (121) is provided on one of the distal end of the first substrate (110) and the proximal end of the second substrate (120), and a groove (111) matching the protrusion (121) is provided on the other of the distal end of the first substrate (110) and the proximal end of the second substrate (120).

4. The splicing type three-way connector according to claim 3, characterized in that: The protruding direction of the protruding portion (121) is parallel to the axis of the docking channel (133).

5. The splicing type three-way connector according to claim 3, characterized in that: The protrusion (121) is an annular structure, and the protrusion (121) is arranged around the accommodating cavity (140).

6. The spliced ​​three-way connector according to any one of claims 3 to 5, characterized in that: The axis of the docking channel (133) is parallel to the peripheral wall of the protruding portion (121).

7. The splicing type three-way connector according to claim 6, characterized in that: The axis of the docking channel (133) is perpendicular to the end surface of the protruding portion (121); And / or, there is a gap between the end surface of the protrusion (121) and the inner wall of the groove (111), and the gap is used to fill the glue.

8. The spliced ​​three-way connector according to any one of claims 1 to 5, characterized in that: The negative pressure channel (131) and the docking channel (133) are coaxially arranged.

9. A handle, characterized in that: The invention comprises a housing (20) and a spliced ​​three-way connector (10) according to any one of claims 1 to 8, wherein the spliced ​​three-way connector (10) is arranged at the distal end of the housing (20).

10. An endoscope, characterized in that: It comprises an insertion part (30) and the handle according to claim 9, wherein the distal end of the docking channel (133) is connected to the proximal end of the insertion part (30).

Images