CN116746860A

CN116746860A - Secondary parabolic joint, disposable endoscope handle and disposable endoscope

Info

Publication number: CN116746860A
Application number: CN202311008955.7A
Authority: CN
Inventors: 周震华; 莫文军
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2023-09-15
Anticipated expiration: 2043-08-11
Also published as: CN116746860B

Abstract

The application provides a secondary parabolic connector, a disposable endoscope handle and a disposable endoscope, relates to the field of medical instruments, and solves the problem that an existing disposable endoscope can cause damage to a host after being inserted and pulled out. The base is provided with a plurality of pin needles in the axial direction, the base is provided with a sealing cavity and a containing cavity, a flowable conducting medium is sealed in the sealing cavity, and the containing cavity is connected with at least two pin needles in series; the puncture part is movably connected with the seat body, can move towards the sealing cavity and puncture the cavity wall of the sealing cavity under the drive of external force, so that the flowable conductive medium can flow from the sealing cavity to the accommodating cavity. The application utilizes the change of the storage position of the flowable conductive medium in the secondary parabolic joint to destroy the electric connection capability, and the other electric joint which is inserted and matched with the secondary parabolic joint is not influenced, so that the other electric joint is not damaged after the secondary parabolic joint is inserted and pulled once, and the disposable endoscope adopting the secondary parabolic joint is not damaged to a host after the secondary parabolic joint is inserted and pulled once.

Description

Secondary parabolic joint, disposable endoscope handle and disposable endoscope

Technical Field

The application relates to the field of medical equipment, in particular to a secondary parabolic joint, a disposable endoscope handle and a disposable endoscope.

Background

The endoscope is used for directly entering the natural cavity of the human body for examination, provides sufficient diagnosis information for doctors, and is required to be plugged onto the host through a cable at the near end of the endoscope during use so as to realize signal interaction and normal use, and the cable at the near end of the endoscope is connected with the host through an electric connector.

In order to avoid cross infection caused by repeated use of the endoscope, disposable endoscopes have been developed. In order to ensure that the disposable endoscope cannot be reused, the application patent application with the application publication number of CN115299845A discloses a disposable endoscope, a first mechanical joint part on a handle of the disposable endoscope is in undetachable connection with a second mechanical joint part on a connector which is in electric signal connection with the handle, and particularly, a locking structure is formed by mutually buckling a locking device in a groove of the first mechanical joint part and a baffle piece arranged on the outer wall of a connector of the second mechanical joint part, so that a undetachable stable connection relationship is realized, once the handle is separated from the connector, the locking structure is completely destroyed in the process of pulling the handle, the connection between the handle and the connector is completely destroyed, the endoscope cannot be used secondarily, and the possibility of cross infection is avoided.

In the disposable endoscope disclosed in the above patent application, the handle and the connector adopted on the endoscope can be regarded as two joints of an electrical connector, and although the handle and the connector can be pulled to forcibly break the locking structure formed by the handle and the connector, in the process of breaking the locking structure, pulling damage can be caused to one connector arranged at the host end, the connection structure of the connector and the host can be influenced, the connector is loosened, and the like, so that the host is damaged, and the service life of the host is influenced.

Disclosure of Invention

One of the purposes of the present application is to design a secondary parabolic joint, a disposable endoscope handle and a disposable endoscope, which are used for solving the problem that the existing disposable endoscope can cause damage to a host after being plugged.

The application is realized by the following technical scheme:

the application provides a secondary polishing joint, which comprises a base body, a puncture element and a flowable conductive medium; the base is provided with a sealing cavity and an accommodating cavity connected with the sealing cavity, a flowable conducting medium is sealed in the sealing cavity, and the accommodating cavity is connected with at least two pin needles in series; the puncture part is movably connected with the base body, wherein the puncture part can move towards the sealing cavity and puncture the cavity wall of the sealing cavity under the drive of external force, so that the flowable conducting medium can flow from the punctured part on the sealing cavity to the accommodating cavity, short circuit occurs between pin needles connected in series with the accommodating cavity, and the secondary throwing electrical connector loses normal connection capability.

When the arrangement structure is adopted, the flowable conductive medium with the conductive capacity is stored in the sealing cavity in a sealing way, the puncture piece can be moved to puncture the cavity wall of the sealing cavity, so that the sealing capacity of the sealing cavity for the flowable conductive medium is lost, and the flowable conductive medium can leak from the puncture position. The accommodating cavity is connected with the sealing cavity and can receive leaked flowable conductive medium. Therefore, after the puncture piece punctures the sealing cavity, the flowable conducting medium can leak from the puncture position of the cavity wall and enter the accommodating cavity to be accommodated, pin needles connected in series by the accommodating cavity are electrically connected, so that the pin needles are in short circuit, and the secondary polishing joint loses normal connection capability, thereby achieving the aim of preventing reuse. The secondary parabolic connector utilizes the change of the storage position of the flowable conductive medium to destroy the electric connection capability, and the position change of the flowable conductive medium occurs in the secondary parabolic connector and cannot affect the other electric connector which is inserted and matched with the secondary parabolic connector, so that the secondary parabolic connector cannot damage the other electric connector after one-time insertion and extraction, and a disposable endoscope adopting the secondary parabolic connector cannot damage a host after insertion and extraction.

Further, in order to better realize the application, the following arrangement structure is adopted: the puncture member and the seat body are arranged back and forth in the axial direction, and the puncture member can move towards the accommodating cavity under the action of axial external force and puncture the cavity wall of the accommodating cavity.

By adopting the arrangement structure, as the puncture part is positioned at the front of the axial direction of the base body, in the inserting and matching process, the other electric connector can forcedly push the puncture part to puncture the cavity wall of the accommodating cavity along the axial direction, so that the function that the throwing electric connector is forcedly destroyed along with one-time insertion and extraction is ensured, the disposable use of the disposable endoscope is effectively ensured, and the repeated use of the disposable endoscope is avoided.

Further, in order to better realize the application, the following arrangement structure is adopted: the seat body is sleeved with an outer sleeve, a socket hole is formed between the front end of the seat body and the outer sleeve, and the puncture piece is positioned in the socket hole.

When the setting structure is adopted, the setting of the outer sleeve not only can provide a holding part, but also can protect the seat body from being damaged, and the other electric connector can be guided through the socket hole.

Further, in order to better realize the application, the following arrangement structure is adopted: the puncture piece is matched with the socket along the axial direction, or the puncture piece comprises a puncture needle and a guide ring connected with the puncture needle, and the guide ring is matched with the socket along the axial direction.

Further, in order to better realize the application, the following arrangement structure is adopted: the inner wall of the socket hole is provided with a retaining protrusion, and the retaining protrusion and the puncture piece are arranged in sequence along the axial direction.

By adopting the arrangement structure, the stop protrusion can prevent the puncture member from exiting towards the orifice of the socket, and can prevent the puncture member from being manually removed from the socket to a certain extent, so that the repeated use of the disposable endoscope can be effectively avoided.

Further, in order to better realize the application, the following arrangement structure is adopted: the three-way type liquid storage device comprises a base, and is characterized in that a three-way channel and a liquid storage cavity communicated with a second port of the three-way channel are arranged in the base, the accommodating cavity is formed in the base and is communicated with a third port of the three-way channel, a first port of the three-way channel is formed in the surface of the base and is used for passing through a puncture piece, the base is further provided with a sealing piece, the sealing piece seals an opening of the liquid storage cavity to form the sealing cavity, and the puncture piece can move towards the sealing cavity and puncture the sealing piece under the driving of external force.

Further, in order to better realize the application, the following arrangement structure is adopted: the puncture member is provided with a ventilation duct which can communicate the second port and the third port of the three-way channel with the outside when the puncture member is inserted into the first port of the three-way channel; and/or, the sealing element is connected with a sealing ring which forms axial sealing with the sealing element, and the sealing ring can form radial sealing with the puncture element inserted therein.

By adopting the arrangement structure, the ventilation duct arranged on the puncture member can ensure that the flowable conductive medium can smoothly flow into the accommodating cavity when the puncture member is not pulled out of the three-way passage.

Further, in order to better realize the application, the following arrangement structure is adopted: and a reset spring for resetting the puncture member is connected between the puncture member and the seat body.

The application also provides a disposable endoscope handle, which comprises a handle main body and a connecting cable; the handle main body is detachably connected with the connecting cable through an electric connector, the electric connector comprises a first electric connector and a second electric connector, the first electric connector is arranged on the handle main body, the first electric connector adopts the secondary polishing electric connector, or the handle main body is electrically connected with the connecting cable, a third electric connector is arranged at the host connecting end of the connecting cable, and the third electric connector adopts the secondary polishing electric connector.

The application also provides a disposable endoscope, which comprises the disposable endoscope handle.

The application has the following advantages and beneficial effects:

in the application, the flowable conductive medium with electric conduction capacity is stored in the sealing cavity in a sealing way, and the puncture member can be moved to puncture the cavity wall of the sealing cavity, so that the sealing cavity loses the sealing capacity of the flowable conductive medium, and the flowable conductive medium can leak from the puncture position. The accommodating cavity is connected with the sealing cavity and can receive leaked flowable conductive medium. Therefore, after the puncture piece punctures the sealing cavity, the flowable conducting medium can leak from the puncture position of the cavity wall and enter the accommodating cavity to be accommodated, pin needles connected in series by the accommodating cavity are electrically connected, so that the pin needles are in short circuit, and the secondary polishing joint loses normal connection capability, thereby achieving the aim of preventing reuse. The secondary parabolic connector utilizes the change of the storage position of the flowable conductive medium to destroy the electric connection capability, and the position change of the flowable conductive medium occurs in the secondary parabolic connector and cannot affect the other electric connector which is inserted and matched with the secondary parabolic connector, so that the secondary parabolic connector cannot damage the other electric connector after one-time insertion and extraction, and a disposable endoscope adopting the secondary parabolic connector cannot damage a host after insertion and extraction.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the external structure of a connection cable using a secondary parabolic joint;

FIG. 2 shows the mating structure of the housing with the piercing element and return spring in the secondary parabolic joint;

FIG. 3 shows the internal structure of the jacket before the secondary parabolic connector is mated with the other electrical connector;

fig. 4 shows the internal structure of the jacket (with the flowable conductive medium removed) of the secondary parabolic connector and the other electrical connector during the plugging process or the unplugging process;

FIG. 5 is an enlarged view of part A of FIG. 4;

FIG. 6 shows a close-up of the housing and piercing member of FIG. 4 (the housing being provided with a pin needle extending through the housing chamber, the vent passage being shown in phantom);

FIG. 7 shows the internal structure of the jacket (with the flowable conductive medium removed) with the secondary parabolic connector and the other connector mated in place;

FIG. 8 shows the structure of the side of the secondary parabolic joint facing the socket;

fig. 9 shows the structure of the disposable endoscope of the present application.

Marked in the figure as:

1. a base; 11. a pin needle; 12. sealing the cavity; 13. a housing chamber; 14. a three-way passage;

2. a piercing member; 21. a puncture needle; 22. a guide ring; 23. a ventilation duct; 24. a slide block;

3. a flowable conductive medium;

4. a return spring;

5. a jacket; 51. a socket hole; 511. a stop protrusion; 512. a chute;

6. a seal;

7. a seal ring;

8. a handle body;

9. a connection cable;

01. a plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application as defined by the claims.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood as appropriate by those of ordinary skill in the art.

In each embodiment of the present application, the "front end" of the secondary parabolic connector refers to an end pointing to the other electrical connector when being plugged with the other electrical connector, the other electrical connector is switched between the plugged state and the unplugged state at the end, and the opposite ends of the "front end" are "rear ends", and the "front end" and the "rear end" correspond to the front-rear relationship.

The inventor finds that in the related art, the handle and the connector (i.e. the two electrical connectors of the electrical connector) form a non-detachable locking structure during the assembly, and even if the locking structure is damaged, a user can still forcibly plug the handle and the connector and keep the electrical connection relationship, for example, the two electrical connectors are wound and fixed by using an adhesive tape or are always pressed against each other with force, so that the first electrical connector and the second electrical connector are matched, the electrical signal connection of the first electrical connector and the second electrical connector is maintained, and the repeated use condition of the disposable endoscope cannot be effectively stopped.

In one aspect, the present application provides a secondary parabolic connector, which is used as a component of an electrical connector, and can destroy its electrical connection function by a primary plugging action, so as to achieve the purpose of disposability, thereby avoiding damage to the other electrical connector, and avoiding damage to a host caused by a disposable endoscope after plugging, as shown in fig. 1-8, and particularly comprises the following structures:

the secondary parabolic joint comprises a base body 1, a puncture member 2 and a flowable conductive medium 3.

As shown in fig. 2, the base 1 has a generally cylindrical structure, and its cross-sectional shape may be circular or polygonal such as rectangular, triangular, etc., and this embodiment takes a circular cross-sectional shape as an example. The housing 1 is provided with a plurality of pin needles 11 arranged axially. The pin 11 extends out of the front end surface of the base 1 to be inserted with a pin jack of the other electrical connector.

The base 1 is provided with a closed sealing cavity 12 and a containing cavity 13, and the sealing cavity 12 is sealed with a pre-poured flowing conductive medium 3. The flowable conductive medium 3 is a medium having a certain fluidity and having conductive properties, and may be, for example, a conductive solution, a liquid conductive paste, a liquid metal conductive liquid, a conductive paste, or the like. The receiving chamber 13 has an opening through which the sealing chamber 12 is engaged, so that the flowable conductive medium 3 leaking from the sealing chamber 12 can enter the receiving chamber 13 through the opening to be stored. At least two pin needles 11 extend into or pass through the accommodating cavity 13, so that the accommodating cavity 13 connects at least two pin needles 11 in series, and when a certain amount of the flowable-state conductive medium 3 enters the accommodating cavity 13, the flowable-state conductive medium 3 can electrically connect the pin needles 11 in the accommodating cavity 13, thereby causing short circuit between the pin needles 11.

The piercing element 2 has the capability of piercing the wall of the sealing chamber 12, which is connected in a movable manner relative to the connecting seat body 1. The piercing element 2 can be driven by external force to move towards the sealing cavity 12 and pierce the cavity wall of the sealing cavity 12 and penetrate into the sealing cavity 12. The cavity wall of the sealing cavity 12 can be made of hard material or soft material, and when the puncture member 2 penetrates into the sealing cavity 12, the cavity wall of the sealing cavity 12 can form radial sealing with the puncture member 2 to prevent the leakage of the flowable conductive medium 3, so that the flowable conductive medium 3 can flow out of the puncture part and flow into the accommodating cavity 13 only when the puncture member 2 is pulled out of the cavity wall of the sealing cavity 12; the wall of the sealing chamber 12 may also form a partial radial seal with the piercing member 2 so that the flowable conducting medium 3 may leak from a portion where no radial seal is formed between the wall of the sealing chamber 12 and the piercing member 2, but the radial seal formed should be slow to leak the flowable conducting medium 3, and a sufficient amount of the flowable conducting medium cannot be formed in the housing chamber 13 in a short time, which may be considered as a time for completing one endoscopic operation, such as 10 minutes, 30 minutes, 1 hour, 15 minutes, or the like, which cannot cause the two pin needle 11 to be shorted.

The flowable conductive medium 3 having conductivity is stored in the sealing cavity 12 in a sealed manner, and the puncture member 2 is moved to puncture the cavity wall of the sealing cavity 12, so that the sealing cavity 12 loses the sealing capability to the flowable conductive medium 3, and the flowable conductive medium 3 can leak from the puncture site. The receiving chamber 13 is engaged with the sealing chamber 12 to receive the leaked flowable conductive medium 3. Therefore, after the puncture member 2 punctures the sealing cavity 12, the flowable conducting medium 3 can leak from the puncture position of the cavity wall and enter the accommodating cavity 13 to be accommodated, and the pin needles 11 connected in series by the accommodating cavity 13 are electrically connected, so that the pin needles 11 are shorted, and the secondary polishing joint loses normal connection capability, thereby achieving the purpose of preventing reuse. The secondary polishing joint utilizes the change of the storage position of the flowable conductive medium 3 to destroy the electrical connection capability, and the position change of the flowable conductive medium 3 occurs in the secondary polishing joint, so that the influence on the other electrical joint matched with the secondary polishing joint is avoided, and meanwhile, the secondary polishing joint does not exist in a structure of a non-detachable connection structure with the other electrical joint matched with the secondary polishing joint, so that the other electrical joint is not damaged after the secondary polishing joint is plugged once, and the disposable endoscope adopting the secondary polishing joint is not damaged to a host after the primary polishing joint is plugged.

According to some alternative embodiments, as shown in fig. 2-7, the piercing member 2 and the base 1 are disposed in an axial front-to-back relationship, that is, the piercing member 2 is located in front of the front end surface of the base 1, so that, during the insertion, the piercing member 2 can be blocked on the movement track of the plug of the other electrical connector, so that the piercing member 2 can be moved towards the accommodating cavity 13 under the action of the axial external force of the plug of the other electrical connector, and finally, the piercing member 2 can be moved axially to pierce the cavity wall of the accommodating cavity 13. Because the puncture member 2 is positioned in front of the base body 1 in the axial direction, in the inserting process, the other electric connector can forcedly push the puncture member 2 to puncture the cavity wall of the accommodating cavity 13 in the axial direction, so that the disposable electric connector is ensured to have the function of being forcedly destroyed along with one-time insertion and extraction, the disposable use of the disposable endoscope is effectively ensured, and the repeated use of the disposable endoscope is avoided.

According to some alternative embodiments, the piercing elements 2 are arranged in radial sequence with the housing 1, i.e. the piercing elements 2 are arranged laterally of the housing 1, the location of the piercing elements 2 for piercing being directed towards the housing 1 and towards the sealing chamber 12. The piercing element 2 can be pushed by being pressed by a human hand to move towards the receiving cavity 13 and eventually pierce the cavity wall of the receiving cavity 13. Such a positional relationship between the puncture member 2 and the housing 1 cannot ensure that the puncture member 2 is forcibly pushed during insertion, and generally can only be performed by the user at his own discretion, and cannot effectively ensure the disposability of the disposable endoscope.

According to some alternative embodiments, as shown in fig. 1, 3-5 and 7, an insulating outer sleeve 5 is fixedly sleeved on the outer peripheral surface of the base 1, and the outer sleeve 5 completely wraps the base 1 and wraps all or part of other components matched with the base 1, such as a circuit board and a part of a wire connected with a cable. The front end of the outer sleeve 5 exceeds the front end of the seat body 1 by a section, a socket hole 51 is formed between the front end of the seat body 1 and the outer sleeve 5, and the puncture member 2 is positioned in the socket hole 51. The outer sleeve 5 not only provides a holding portion, but also protects the base 1 from damage, and guides the other electrical connector through the socket 51.

According to alternative embodiments, piercing element 2 is axially guided in engagement with socket 51, such as shown in fig. 2-8, piercing element 2 is provided with radially projecting slide 24, the inner wall of sleeve 5 at socket 51 is provided with axially extending slide groove 512, and slide 24 is positioned in slide groove 512 to establish a sliding guided engagement so that piercing element 2 can move axially more smoothly within socket 51.

According to some alternative embodiments, as shown in fig. 2-8, the penetrating member 2 includes a guide ring 22 having a circumferential closure and a penetrating needle 21 extending axially from a rear end surface of the guide ring 22 toward a front end surface of the housing 1. The guide ring 22 is a circular ring coaxially disposed with the socket 51, and the outer peripheral surface of the guide ring 22 is in contact engagement with the socket 51 in axially guided relation. The outer circular surface of the guide ring 22 can be further provided with a sliding block 24, the inner wall of the socket 51 of the outer sleeve 5 is provided with an axially extending sliding groove 512, and the sliding block 24 is positioned in the sliding groove 512 to establish a sliding guide matching relationship, so that the puncture member 2 can move in the socket 51 more stably along the axial direction. The rear end portion of the puncture needle 21 is provided as a pointed tip.

According to some alternative embodiments, as shown in fig. 3, 7 and 8, the inner wall of socket 51 is provided with radially protruding stop protrusions 511, which stop protrusions 511 are arranged axially in sequence back and forth with piercing member 2, and interfere with the movement path of piercing member 2 towards the orifice (i.e. the front end) of socket 51 to block piercing member 2. Preferably, the stop protrusions 511 may be provided in a sliding groove 512 provided on the inner wall of the socket 51 for cooperating with the sliding blocks 24 provided on the guide ring 22 to block the penetration member 2. The stop protrusions 511 prevent the piercing element 2 from being withdrawn toward the aperture of the socket 51, and prevent the piercing element 2 from being manually removed from the socket 51 to some extent, so as to more effectively prevent reuse of the disposable endoscope.

According to some alternative embodiments, the sealed cavity 12 is defined by the wall of a rigid container or a soft container (such as a capsule), which is two separate parts from the housing 1, the container being assembled to the housing 1 after being filled with the flowable conductive medium 3. The housing chamber 13 may be defined by a wall of a rigid container, which is also two separate components from the housing 1. The seal chamber 12 may be provided radially outside the seat body 1. The housing cavity 13 may be disposed axially forward of the housing 1, and the container defining the housing cavity 13 is simultaneously sleeved over the plurality of pin needles 11, with the opening thereof engaging with the container defining the seal cavity 12.

According to some alternative embodiments, as shown in fig. 3 to 7, the sealing chamber 12 and the housing chamber 13 are formed inside the housing 1, by drilling. The seat body 1 is provided with an axially arranged blind hole and a radially arranged blind hole, and the two blind holes are intersected to form a radially arranged containing cavity 13, an axially arranged liquid storage cavity and a three-way channel 14 positioned at the intersection. So that the second port of the three-way channel 14 is communicated with the front end orifice of the liquid storage cavity, the third port of the three-way channel 14 is communicated with the top opening of the accommodating cavity 13, and the first port of the three-way channel 14 is formed on the surface of the seat body 1 and is used for passing through the puncture member 2. The seat body 1 is also provided with a sealing element 6, the opening of the liquid storage cavity is sealed by the sealing element 6 to form a sealing cavity 12, and the sealing element 6 is arranged to be penetrated by the penetrating element 2, so that the penetrating element 2 can move towards the sealing cavity 12 and penetrate the sealing element 6 under the driving of external force.

According to some alternative embodiments, as shown in fig. 2-7, the sealing member 6 is in a sheet structure, a mounting groove is formed on the outer peripheral surface of the base 1, the mounting groove is communicated with the liquid storage cavity, and the sealing member 6 is inserted into the mounting groove along the radial direction to seal the opening of the liquid storage cavity.

According to some alternative embodiments, as shown in fig. 6, one end face of the sealing member 6 is connected with a sealing ring 7 forming an axial seal with the sealing member, and the sealing ring 7 is fixed on the sealing member 6 by means of glue bonding, welding, clamping and the like. The seal ring 7 is coaxially arranged with the puncture needle 21 and can form a radial seal with the puncture member 2 inserted therein. After the sealing ring 7 is arranged on the sealing piece 6 at the position corresponding to the puncture needle 21, the leakage of the flowing conductive medium 3 in the inserting and matching process can be effectively avoided, and the stable electric connection effect in the using process is ensured.

According to some alternative embodiments, as shown in fig. 5 and 6, the puncture member 2 is provided with a vent channel 23, the rear end of the vent channel 23 is formed with an orifice on the tapered surface of the head of the puncture needle 21, and the front end of the vent channel 23 is formed with another orifice on the outer peripheral surface of the puncture needle 21. The vent channel 23 is generally inclined to the axis of the needle 21. As shown in fig. 5 and 6, the vent passage 23 can communicate the second port and the third port of the three-way passage 14 with the outside when the penetrating member 2 is inserted into the first port of the three-way passage 14. The ventilation channel 23 of the puncture member 2 can ensure that the flowing conductive medium 3 can smoothly flow into the accommodating cavity 13 when the puncture member 2 is not pulled out of the three-way channel 14.

According to some alternative embodiments, as shown in fig. 2-7, a return spring 4 for resetting the piercing member 2 is connected between the piercing member 2 and the housing 1. Specifically, the return spring 4 is axially disposed, and both ends thereof are respectively connected to the rear end face of the guide ring 22 and the front end face of the seat body 1. The reset spring 4 can enable the puncture member 2 to reset automatically after being pulled out, so that the puncture member 2 is not required to reset by knocking to expose the punctured part on the cavity wall of the sealing cavity 12, the flowable conducting medium 3 can flow out smoothly, and multiplexing can be avoided more effectively.

When the reset spring 4 is combined with the ventilation duct 23 arranged on the puncture member 2, the time for shorting the pin needle by the flowable conducting medium 3 can be reduced, and the opportunity of preventing the flowable conducting medium 3 from flowing into the accommodating cavity 13 after the secondary polishing joint is pulled out rapidly is not given, so that multiplexing is effectively avoided.

On the other hand, the application also provides a disposable endoscope handle which is an important part of the disposable endoscope, and as shown in fig. 1 and 9, the disposable endoscope handle comprises a handle main body 8 and a connecting cable 9, the handle main body 8 is electrically connected with the connecting cable 9, and the handle main body 8 is connected with a host through the connecting cable 9. As a disposable endoscope handle, the handle body 8 is disposable after one use, and the main body is reused. When the handle body 8 and the connection cable 9 are detachably connected through the electrical connector, in order to discard only the handle body 8 after one use, the connection cable 9 is reserved, so that the use cost is saved, and the secondary polishing connector can be arranged at the a part shown in fig. 9. Specifically, the electrical connector includes a first electrical connector and a second electrical connector, wherein the first electrical connector is disposed on the handle body 8, the second electrical connector is disposed on the disposable endoscope handle connection end of the connection cable 9, the first electrical connector is a secondary polishing electrical connector, and the second electrical connector is a common conventional electrical connector. The host connection end of the connection cable 9 is provided with a third electrical connector, wherein the third electrical connector adopts a common conventional electrical connector.

When the handle body 8 and the connecting cable 9 are not detachably connected or directly and electrically connected through the electrical connector, the handle body 8 and the connecting cable 9 need to be discarded after one use, the secondary polishing connector can be arranged at the b part as shown in fig. 9, specifically, the host connection end of the connecting cable 9 is provided with a third electrical connector, and the third electrical connector adopts the secondary polishing connector.

The secondary polishing joint reserves the pin needle 11 on the base body 1, is similar to the current general structure form in the industry, namely, the pin needle is arranged in the joint at the handle side, and the jack into which the pin needle 11 is inserted is arranged in the joint at the host side, so that the secondary polishing joint cannot influence the application scene of the disposable endoscope when being arranged on the disposable endoscope, and can be well adapted to the current host without modifying the host. In addition, as the host is a reusable device, after the pin needle 11 is reserved on the base body 1, the pin needle on the host side is not provided with a protruding pin needle structure, so that the problem of abrasion of the pin needle on the host side does not exist in the process of mutual insertion and extraction, and the normal service life of the relevant connector on the existing host can be effectively maintained.

In another aspect, the present application also provides a disposable endoscope, as shown in fig. 9, including a disposable endoscope handle and an insertion section mounted to the disposable endoscope handle.

The procedure of use will be described herein by taking one of the possible embodiments of the disposable endoscope of the present application as an example;

the host is provided with a fourth electric connector, and the fourth electric connector adopts a common conventional electric connector and can establish electric connection when being matched with a third electric connector adopting a secondary polishing electric connector.

As shown in fig. 3, 4 and 7, when a person holds the outer sheath 5 of the third electrical connector of the connection cable 9 in alignment with the fourth electrical connector insertion, the plug 01 of the fourth electrical connector enters the socket 51 from the outside and pushes against the guide ring 22, and the pin needle insertion hole of the plug 01 is inserted in place with the pin needle 11, the puncture needle 21 on the guide ring 22 pierces the sealing member 6 into the sealing cavity 12, and the flowable-state conductive medium 3 is sealed in the sealing cavity 12 which has been pierced due to the sealing effect of the sealing ring 7 and the puncture needle 21.

After the use is completed, when a person holds the outer sleeve 5 of the third electric connector of the connecting cable 9 and pulls out from the host, the plug 01 of the fourth electric connector gradually withdraws from the socket 51, finally, the puncture needle 21 withdraws from the sealing cavity 12 and the sealing ring 7, the flowing conductive medium 3 leaks from the sealing cavity 12 and flows into the accommodating cavity 13, and the pin needles 11 connected in series with the accommodating cavity 13 are shorted together to cause short circuit.

When someone takes the connecting cable 9 again to connect with the fourth electrical connector of the host, the flowable conductive medium 3 in the accommodating cavity 13 may still have fluidity or be solidified at this time, and the electrical connection between the third electrical connector and the fourth electrical connector cannot be established through the insertion of the pin needle 11 and the pin needle jack of the plug 01, so that the disposable endoscope cannot be reused.

The secondary polishing joint can be applied to other electric equipment with disposable requirements, such as a dental drill, besides an endoscope, and is connected with a motor of the dental drill through a cable, so that the motor is connected with the other electric joint connected with a power supply through the secondary polishing joint for use. The secondary parabolic connector can also be connected with other electric devices through cables, and the purpose is to enable the electric devices to lose part or all of functions after the electric devices are connected with a power supply through the secondary parabolic connector again.

Therefore, in another aspect, the application provides a disposable dental drill, comprising a dental drill handle, a brushless motor arranged in the dental drill handle, and a secondary parabolic joint arranged on an external connection end of a cable and connected with the brushless motor through the cable, so that the brushless motor is connected with another electric joint connected with a power supply through the secondary parabolic joint for use.

The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered.

Claims

1. A secondary parabolic joint, characterized in that: comprising the following steps:

the pin connector comprises a base body (1) provided with a plurality of pin needles (11) in the axial direction, wherein the base body (1) is provided with a sealing cavity (12) and a containing cavity (13) connected with the sealing cavity (12), a flowable conducting medium (3) is sealed in the sealing cavity (12), and the containing cavity (13) is connected with at least two pin needles (11) in series;

the puncture piece (2) is movably connected with the base body (1), wherein the puncture piece (2) can move towards the sealing cavity (12) under the drive of external force and puncture the cavity wall of the sealing cavity (12), so that the flowable conducting medium (3) can flow from the punctured part of the sealing cavity (12) into the containing cavity (13), the pin needles (11) connected in series with the containing cavity (13) are shorted, and the secondary polishing joint loses normal connection capability.

2. A secondary parabolic joint as claimed in claim 1, wherein: the puncture member (2) and the seat body (1) are arranged back and forth in the axial direction, and the puncture member (2) can move towards the accommodating cavity (13) under the action of axial external force and puncture the cavity wall of the accommodating cavity (13).

3. A secondary parabolic joint as claimed in claim 2, wherein: the novel puncture needle is characterized in that the base body (1) is sleeved with the outer sleeve (5), a socket hole (51) is formed between the front end of the base body (1) and the outer sleeve (5), and the puncture member (2) is located in the socket hole (51).

4. A secondary parabolic joint as claimed in claim 3, wherein: the puncture member (2) is matched with the socket (51) along the axial direction, or the puncture member (2) comprises a puncture needle (21) and a guide ring (22) connected with the puncture needle (21), and the guide ring (22) is matched with the socket (51) along the axial direction.

5. A secondary parabolic joint as claimed in claim 3, wherein: the inner wall of the socket hole (51) is provided with a retaining protrusion (511), and the retaining protrusion (511) and the puncture piece (2) are sequentially arranged front and back along the axial direction.

6. A secondary parabolic joint as claimed in claim 2, wherein: be provided with tee bend passageway (14) in pedestal (1) and with the stock solution chamber of tee bend passageway (14) second port intercommunication, accept chamber (13) form in pedestal (1) and in tee bend passageway (14) third port intercommunication, tee bend passageway (14) first port form in pedestal (1) surface is used for passing through puncture spare (2), pedestal (1) still is provided with sealing member (6), sealing member (6) are sealed the opening in stock solution chamber forms sealing chamber (12), puncture spare (2) can be under external force drive towards sealing chamber (12) motion and puncture sealing member (6).

7. The secondary parabolic joint of claim 6 wherein: the puncture member (2) is provided with a ventilation duct (23), and the ventilation duct (23) can communicate the second port and the third port of the three-way channel (14) with the outside when the puncture member (2) is inserted into the first port of the three-way channel (14);

and/or the number of the groups of groups,

the sealing element (6) is connected with a sealing ring (7) which forms axial sealing with the sealing element, and the sealing ring (7) can form radial sealing with the puncture element (2) inserted therein.

8. A secondary parabolic joint as claimed in any one of claims 1 to 7, wherein: a reset spring (4) for resetting the puncture piece (2) is connected between the puncture piece (2) and the seat body (1).

9. A disposable endoscope handle, characterized in that: comprises a handle main body (8) and a connecting cable (9);

the handle body (8) is detachably connected with the connecting cable (9) through an electric connector, the electric connector comprises a first electric connector and a second electric connector, the first electric connector is arranged on the handle body (8), the first electric connector adopts the secondary polishing electric connector of any one of claims 1-8,

or alternatively, the first and second heat exchangers may be,

the handle main body (8) is electrically connected with the connecting cable (9), and a third electrical connector is arranged at the host connecting end of the connecting cable (9), and the third electrical connector adopts the secondary polishing connector as claimed in any one of claims 1-8.

10. A disposable endoscope, characterized in that: comprising the disposable endoscope handle of claim 9.