Endoscope minimally invasive instrument with lockable slip ring

Abstract

The utility model provides an endoscope minimally invasive instrument with a lockable sliding ring. The endoscope minimally invasive instrument comprises a handle, an elastic tube, a tail end executing mechanism, an inhaul cable and the sliding ring. A locking part is arranged on the handle, one end of the elastic tube is connected to the handle, the tail end executing mechanism is located at the end, away from the handle, of the elastic tube, the inhaul cable slidably penetrates through the elastic tube, one end of the inhaul cable is in transmission connection with the tail end executing mechanism, the sliding ring is slidably arranged on the handle, the sliding ring is in transmission connection with the inhaul cable, and the sliding ring is provided with a locking matching part. The sliding ring has a locking state and an unlocking state, in the locking state, the sliding ring slides to one side of the locking part, the locking matching part is matched with the locking part in a locking mode, and sliding of the sliding ring along the handle is limited. According to the endoscope minimally invasive instrument, the locking part is arranged on the handle, so that the sliding ring can be locked on the handle, the inhaul cable cannot move along the elastic tube, the position and state of the tail end executing mechanism are kept fixed, long-time fatigue of an operator is reduced, and the operator can conveniently conduct other related operations.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly, to an endoscope minimally invasive instrument with a lockable slip ring. Background Art

[0002] With the development of medical science and technology, minimally invasive surgery with the aid of an endoscope has gradually become the mainstream for treating gastrointestinal diseases. As an inspection instrument, the endoscope itself cannot perform surgical functions. Usually, a surgeon needs to use a minimally invasive medical instrument to pass through the forceps channel hole of the endoscope and follow the endoscope's lens to reach the target lesion site. Then, the surgeon uses the minimally invasive medical instrument to perform corresponding surgical operations on the target lesion site. Common minimally invasive medical instruments include hemostatic clips, snare devices, sampling forceps, mucosal incision knives, etc. Such minimally invasive medical instruments generally include a handle, a slip ring, a cable, an elastic tube, and a distal end actuator. The elastic tube is connected to the handle, the cable is located inside the elastic tube, the slip ring is connected to the handle, and the slip ring is connected to the distal end actuator through the cable. By sliding the slip ring, the surgeon can control the movement of the distal end actuator or perform a certain action. Taking a tissue suturing device as an example, the distal end actuator may include a staple assembly. When it is necessary to replace the staple assembly, it is necessary to control the cable to extend out of the elastic tube to facilitate the replacement of the staple assembly. If there is no mechanism to lock the slip ring, the surgeon needs to keep holding the slip ring to prevent it from moving back and forth. Once the finger is released, the releaser at the end of the cable may retract, making it impossible to replace the staple assembly. The fatigue intensity of the operating finger is extremely high, and at the same time, the operation efficiency and surgical progress are affected, and the user experience is poor. Utility Model Content

[0003] To solve one of the above technical defects, an endoscope minimally invasive instrument with a lockable slip ring is provided in an embodiment of the present application.

[0004] The present utility model adopts the following technical solutions:

[0005] An endoscope minimally invasive instrument with a lockable slip ring, comprising:

[0006] A handle, with a locking portion provided thereon;

[0007] An elastic tube, one end of which is connected to the handle;

[0008] A distal end actuator, located at the end of the elastic tube away from the handle;

[0009] A cable, slidably passing through the elastic tube, and one end of the cable is drivingly connected to the distal end actuator;

[0010] A slip ring, slidably arranged on the handle, the slip ring is drivingly connected to the other end of the cable, and the slip ring has a locking mating portion;

[0011] The slip ring has a locked state and an unlocked state. In the locked state, the slip ring slides to one side of the locking part, and the locking engagement part and the locking part are locked and engaged to restrict the slip ring from sliding along the handle. In the unlocked state, the locking engagement part and the locking part are separated from each other.

[0012] Optionally, the locking part includes an elastic block provided on the handle;

[0013] The locking engagement part includes a convex block provided on the slip ring;

[0014] In the locked state, the convex block abuts against the elastic block, and the elastic block elastically deforms. In the unlocked state, the convex block disengages from the elastic block, and the elastic block resumes its deformation.

[0015] Optionally, the locking part includes a clamping block provided on the surface of the elastic block;

[0016] In the locked state, the clamping block is clamped to the side of the convex block facing away from the elastic tube.

[0017] Optionally, the slip ring includes an outer sleeve and an inner slider;

[0018] The handle includes two rod bodies arranged at intervals, a strip groove is formed between the two rod bodies, and the elastic block is provided on the rod body;

[0019] The outer sleeve is slidably sleeved outside the two rod bodies, the inner slider is slidably arranged in the strip groove, the inner slider is connected to the outer sleeve, and the convex block is provided on the inner slider.

[0020] Optionally, a slotted opening communicating with the strip groove is provided on the rod body, and the slotted opening encloses to form the elastic block.

[0021] Optionally, the slotted opening includes two first slotted openings and one second slotted opening. Both of the two first slotted openings extend along the length direction of the handle, the two first slotted openings are sequentially arranged along the circumferential direction of the handle, the second slotted opening extends along the circumferential direction of the handle, and the second slotted opening communicates with one ends of the two first slotted openings.

[0022] Optionally, in the locked state, the inner wall of the outer sleeve fits against the side of the elastic block facing away from the strip groove.

[0023] Optionally, a limiting groove and a clamping groove are provided on the inner wall of the outer sleeve;

[0024] A positioning block and a claw are provided on the inner slider;

[0025] The positioning block of the inner slider is embedded in the limiting groove, and the claw is clamped in the clamping groove;

[0026] The limiting groove and the clamping groove limit the relative movement of the inner slider with respect to the outer sleeve body.

[0027] Optionally, the inner slider has a main block body and an extension body. The extension body is connected to one end of the main block body, the claw is arranged at one end of the extension body away from the main block body, and the positioning block is arranged at one end of the main block body away from the claw.

[0028] Optionally, the inner slider includes two half-block bodies, and the convex block includes upper convex blocks respectively arranged on the two half-block bodies;

[0029] The two half-block bodies are detachably connected. In the state where the two half-block bodies are connected, the two upper convex blocks are spliced to form the convex block.

[0030] By adopting the above technical solutions, the present application has the following beneficial effects:

[0031] The locking part is arranged on the handle of the endoscopic minimally invasive instrument of the present application, which can lock the slip ring to the handle, so that the cable cannot move along the elastic tube, the position and state of the end effector are kept fixed, reducing the long-term fatigue of the operator and facilitating the operator to perform other related operations. Description of the Drawings

[0032] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0033] Figure 1 A cross-sectional view showing the slip ring of the slip ring-lockable endoscopic minimally invasive instrument provided by the embodiment of the present application in an unlocked state;

[0034] Figure 2 A cross-sectional view showing the slip ring of the slip ring-lockable endoscopic minimally invasive instrument provided by the embodiment of the present application in a locked state;

[0035] Figure 3 Show Figure 2 The enlarged view of part A in;

[0036] Figure 4 A schematic structural view of the handle of the slip ring-lockable endoscopic minimally invasive instrument provided by the embodiment of the present application;

[0037] Figure 5 A schematic structural view of the inner slider of the slip ring-lockable endoscopic minimally invasive instrument provided by the embodiment of the present application;

[0038] Figure 6 A partial structural cross-sectional view of the slip ring lockable endoscopic minimally invasive instrument provided by the embodiments of the present application is shown. Detailed implementation manners

[0039] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further describes the exemplary embodiments of the present application in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0040] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationships indicated by terms such as "top", "bottom", "height", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] In the present application and its embodiments, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] In the present application and its embodiments, unless otherwise clearly defined and limited, the first feature being "above" or "below" the 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 other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0043] See Figures 1 to 6As shown, an embodiment of the present application provides an endoscopic minimally invasive instrument that can be locked by a slip ring, comprising: a handle 1, an elastic tube, an end actuator, a pull cable and a slip ring 5. A locking portion is provided on the handle 1, one end of the elastic tube is connected to the handle 1, and the end actuator is located at the end of the elastic tube away from the handle 1, the pull cable is slidably inserted into the elastic tube, one end of the pull cable is transmission-connected to the end actuator, and the end actuator can be any one of a sampling forceps head, a hemostatic clamp, a snare and a spring nail assembly. The slip ring 5 is slidably provided on the handle 1, and the slip ring 5 is transmission-connected to the other end of the pull cable, and the slip ring 5 has a locking mating portion. The slip ring 5 has a locked state and an unlocked state, see Figure 2 and Figure 3 As shown, in the locked state, the slip ring 5 slides to one side of the locking portion, and the locking matching portion and the locking portion are locked and matched to limit the slip ring 5 from sliding along the handle 1. In the unlocked state, see Figure 1 As shown, the locking fitting portion and the locking portion are separated.

[0044] A locking portion is provided on the handle 1 of the endoscopic minimally invasive instrument of the present application, which can lock the slip ring 5 to the handle 1, so that the cable cannot move along the elastic tube, the position and state of the end actuator remain fixed, reducing the operator's fatigue for a long time and facilitating the operator to perform other related operations.

[0045] Taking the tissue suturing device as an example, the end actuator may include a spring nail assembly. When the spring nail assembly needs to be replaced, the operator slides the slip ring 5 to make the releaser at the end of the cable extend out of the elastic tube. At this time, the locking fitting part and the locking part can lock the slip ring 5 to the handle 1. The cable will not move along the elastic tube, and the releaser will remain extended from the elastic tube. The operator does not need to keep hooking the slip ring 5 to prevent it from moving back and forth. The operator can easily assemble the new spring nail assembly to the releaser, and the fatigue strength of the operating fingers is reduced, the operating efficiency is improved, and the progress of the operation is accelerated.

[0046] In some possible implementations, see Figures 1 to 4 As shown, the locking part includes an elastic block 111 disposed on the handle 1, and the locking matching part includes a protrusion 5211 disposed on the slip ring 5. In the locked state, the protrusion 5211 abuts against the elastic block 111, and the elastic block 111 is elastically deformed. The elastic force between the protrusion 5211 and the elastic block 111 is large, and the resistance to relative movement is large, so the slip ring 5 will not easily move along the handle 1. In the unlocked state, the protrusion 5211 is separated from the elastic block 111, and the elastic block 111 recovers its deformation. In the locked state, to switch to the unlocked state, a sufficiently large external force needs to be applied to the slip ring 5 to separate the elastic block 111 and the protrusion 5211.

[0047] In some possible embodiments, refer to Figure 3 As shown, the locking portion includes a clamping block 1111 disposed on the surface of the elastic block 111. In the locked state, the clamping block 1111 is clamped to the side of the convex block 5211 away from the elastic tube. The clamping block 1111 and the convex block 5211 are clamped and matched, and are not easily disengaged, so that the slip ring 5 is stably in the locked state.

[0048] In some possible embodiments, refer to Figures 1 to 4 As shown, the slip ring 5 includes an outer sleeve 51 and an inner slider 52. The handle 1 includes two rod bodies 11 spaced apart. A strip groove 13 is formed between the two rod bodies 11. The elastic block 111 is disposed on the rod body 11. The outer sleeve 51 is slidably sleeved outside the two rod bodies 11. The inner slider 52 is slidably disposed in the strip groove 13. The inner slider 52 is connected to the outer sleeve 51. The convex block 5211 is disposed on the inner slider 52.

[0049] Refer to Figure 4 As shown, a slotted groove 112 communicating with the strip groove 13 is formed on the rod body 11. The slotted groove 112 encloses to form the elastic block 111. That is, the elastic block 111 is a slotted block formed by forming a slotted groove 112 on the rod body 11. The elastic block 111 and the main body of the rod body 11 are an integral part. One end of the elastic block 111 is connected to the main body structure of the rod body, and the other end of the elastic block 111 is suspended.

[0050] Specifically, the slotted groove 112 includes two first slotted grooves 1121 and one second slotted groove 1122. Both of the two first slotted grooves 1121 extend along the length direction of the handle 1. The two first slotted grooves 1121 are sequentially arranged along the circumferential direction of the handle 1. The second slotted groove 1122 extends along the circumferential direction of the handle 1, and the second slotted groove 1122 communicates with one end of the two first slotted grooves 1121.

[0051] In the locked state, refer to Figure 2 and Figure 3 As shown, the inner wall of the outer sleeve 51 abuts against the side of the elastic block 111 away from the strip groove 13. And because the outer sleeve 51 on the outside protects the elastic block 111 and is limited to the outside of the elastic block 111, the elastic block 111 can maintain elastic abutting cooperation with the convex block 5211, and the locking structure will not easily fail.

[0052] In some possible embodiments, refer to Figure 6As shown, a limiting groove 512 and a clamping groove 513 are provided on the inner wall of the outer sleeve 51. A positioning block 5212 and a claw 5221 are provided on the inner slider 52. The positioning block 5212 of the inner slider 52 is embedded in the limiting groove 512, and the claw 5221 is clamped in the clamping groove 513. The limiting groove 512 and the clamping groove 513 limit the relative movement of the inner slider 52 with respect to the outer sleeve 51. The outer sleeve and the inner slider 52 are in a clamping and limiting fit, and the two can only move synchronously along the handle 1.

[0053] Combined with Figure 5 and Figure 6 As shown, the inner slider 52 has a main block 521 and an extension 522. The extension 522 is connected to one end of the main block 521. The claw 5221 is provided at one end of the extension 522 away from the main block 521, and the positioning block 5212 is provided at one end of the main block 521 away from the claw.

[0054] In some possible embodiments, referring to Figure 5 As shown, the inner slider 52 includes two half-blocks. The bump 5211 includes half-bumps respectively provided on the two half-blocks. The two half-blocks are detachably connected. In the state where the two half-blocks are connected, the two half-bumps 5211 are spliced to form the bump 5211. One of the two half-blocks is provided with an insertion shaft, and the other is provided with an insertion shaft socket. The insertion shaft is inserted into the socket, and the two can be connected to form an integral structure and move synchronously along the handle 1.

[0055] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0057] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to cover these changes and modifications.

Claims

1. A minimally invasive endoscopic instrument with a lockable slip ring, characterized in that Comprising: A handle, with a locking portion provided on the handle; An elastic tube, one end of the elastic tube being connected to the handle; An end effector, the end effector being located at the end of the elastic tube away from the handle; A cable, the cable being slidably disposed within the elastic tube, one end of the cable being drivingly connected to the end effector; A slip ring, the slip ring being slidably disposed on the handle, the slip ring and the other end of the cable being drivingly connected, the slip ring having a locking engagement portion; The slip ring has a locked state and an unlocked state. In the locked state, the slip ring slides to one side of the locking portion, and the locking engagement portion and the locking portion are in locking engagement to restrict the slip ring from sliding along the handle. In the unlocked state, the locking engagement portion and the locking portion are separated.

2. The endoscope minimally invasive instrument with a lockable slip ring according to claim 1, characterized in that, The locking portion includes an elastic block provided on the handle; The locking engagement portion includes a protrusion provided on the slip ring; In the locked state, the protrusion abuts against the elastic block, and the elastic block elastically deforms. In the unlocked state, the protrusion disengages from the elastic block, and the elastic block returns to its original shape.

3. The slip ring lockable endoscopic minimally invasive instrument according to claim 2, characterized in that, The locking portion includes a latch provided on the surface of the elastic block; In the locked state, the latch is latched to the side of the protrusion away from the elastic tube.

4. The slip ring lockable endoscopic minimally invasive instrument according to claim 2, wherein The slip ring includes an outer sleeve and an inner slider; The handle includes two spaced-apart rod bodies, a strip groove being formed between the two rod bodies, and the elastic block being provided on the rod bodies; The outer sleeve is slidably sleeved outside the two rod bodies, the inner slider is slidably disposed in the strip groove, the inner slider is connected to the outer sleeve, and the protrusion is provided on the inner slider.

5. The slip ring lockable endoscopic minimally invasive instrument according to claim 4, wherein, A slotted opening communicating with the strip groove is provided on the rod body, and the slotted opening encloses to form the elastic block.

6. The slip ring lockable minimally invasive endoscopic instrument according to claim 5, characterized in that, The slotted opening includes two first slotted openings and one second slotted opening. Both of the two first slotted openings extend along the length direction of the handle, the two first slotted openings are sequentially arranged along the circumferential direction of the handle, the second slotted opening extends along the circumferential direction of the handle, and the second slotted opening communicates with one end of the two first slotted openings.

7. The slip ring lockable endoscopic minimally invasive instrument according to claim 4, characterized in that, In the locked state, the inner wall of the outer sleeve abuts against the side of the elastic block away from the strip groove.

8. The slip ring lockable endoscopic minimally invasive instrument according to claim 4, characterized in that, The inner wall of the outer sleeve is provided with a limiting groove and a card slot; The inner slider is provided with a positioning block and a claw; The positioning block of the inner slider is embedded in the limiting groove, and the claw is latched in the card slot; The limiting groove and the card slot restrict the relative movement of the inner slider with respect to the outer sleeve.

9. The endoscope minimally invasive instrument with a lockable slip ring according to claim 8, wherein The inner slider has a main block body and an extension body, the extension body being connected to one end of the main block body, the claw being provided at the end of the extension body away from the main block body, and the positioning block being provided at the end of the main block body away from the claw.

10. The slip ring lockable endoscopic minimally invasive instrument according to any one of claims 4-9, characterized in that, The inner slider includes two half block bodies, and the protrusion includes upper half protrusions respectively provided on the two half block bodies; The two half block bodies are detachably connected, and in the state where the two half block bodies are connected, the two upper half protrusions are spliced to form the protrusion.

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