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 handle cap is arranged at the end of the handle and provided with a locking part, one end of the elastic tube is connected to the handle cap, 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, and one end of the inhaul cable is in transmission connection with the tail end executing mechanism. The sliding ring is arranged on the handle in a sliding mode, the sliding ring is in transmission connection with the other end of the inhaul cable, and the sliding ring is provided with a locking matching part. The sliding ring has a locking state, and in the locking state, the sliding ring slides to one side of the handle cap, and the locking matching part is matched with the lock in a locking mode. According to the endoscope minimally invasive instrument, the locking part is arranged on the handle cap, so that the sliding ring can be locked on one side of the handle cap, the sliding ring cannot move along the handle, the position and the 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, the surgeon needs to use a minimally invasive medical device to pass through the biopsy channel of the endoscope and follow the endoscope's lens to reach the target lesion site. Then, the surgeon uses the minimally invasive medical device to perform corresponding surgical operations on the target lesion site. Common minimally invasive medical devices include hemostatic clips, snare devices, biopsy forceps, mucosal incision knives, etc. Such minimally invasive medical devices 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 the staple assembly needs to be replaced, 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, which also affects the operation efficiency and surgical progress, and the user experience is poor. Summary of the Utility Model

[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 this application.

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

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

[0006] A handle, a handle cap is provided at the end of the handle, and the handle cap has a locking portion;

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

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

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

[0010] Slip ring, the slip ring is slidably arranged on the handle, the slip ring is in driving connection with the other end of the cable, and the slip ring has a locking and mating part;

[0011] The slip ring has a locked state. In the locked state, the slip ring slides to one side of the handle cap, and the locking and mating part is locked and mated with the locking part.

[0012] Optionally, the handle includes two rod bodies arranged at intervals, and a strip groove is formed between the two rod bodies;

[0013] The handle cap is located at one end of the two rod bodies and sleeved on the two rod bodies;

[0014] The slip ring includes an outer sleeve body and an inner slider. The outer sleeve body 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 body, and the locking and mating part is arranged on the inner slider.

[0015] Optionally, the locking part includes a bayonet arranged on the handle cap;

[0016] The locking and mating part includes a first claw arranged on the inner slider;

[0017] In the locked state, the first claw is clamped in the bayonet.

[0018] Optionally, the inner slider has a main block body and an extension body. The main block body is located inside the outer sleeve body. One end of the extension body is connected to the main block body, and the other end of the extension body extends out of the outer sleeve body and is provided with the first claw.

[0019] Optionally, the handle cap includes a cap body and an unlocking part;

[0020] The cap body has the bayonet, the unlocking part is located in the bayonet, and the unlocking part is connected to the cap body;

[0021] Under the action of an external force, the unlocking part can move towards the inner side of the bayonet to push the first claw out of the bayonet.

[0022] Optionally, a relief notch is arranged on one side of the unlocking part facing the handle;

[0023] In the locked state, the first claw partially extends into the relief notch.

[0024] Optionally, the unlocking part has an outer convex part protruding from the bayonet.

[0025] Optionally, a slotted opening communicating with the strip groove is arranged on the handle cap, and the slotted opening encloses to form the unlocking part.

[0026] Optionally, a limiting groove and a clamping groove are provided on the inner wall of the outer sleeve body;

[0027] A positioning block is provided on the main block body of the inner slider, and a second claw is provided on the extension body;

[0028] The positioning block is embedded in the limiting groove, and the second claw is clamped in the clamping groove.

[0029] Optionally, the second claw is located between the first claw and the main block body.

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

[0031] A locking portion is provided on the handle cap of the endoscopic minimally invasive instrument of the present application, which can lock the slip ring on one side of the handle cap, so that the slip ring cannot move along the handle, 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 illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

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

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

[0035] Figure 3 A partial structural view showing the endoscopic minimally invasive instrument with a lockable slip ring provided by an embodiment of the present application;

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

[0037] Figure 5 A structural schematic view of the inner slider of the endoscopic minimally invasive instrument with a lockable slip ring provided by an embodiment of the present application. Detailed Embodiments

[0038] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the exemplary embodiments of the present application are further described in detail below 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.

[0039] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, it should not be construed as a limitation to the present application.

[0040] In the present application and its embodiments, unless otherwise clearly defined and limited, terms such as "set", "install", "connect", "couple", "fix", 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 connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication between two elements inside 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 circumstances.

[0041] In the present application and its embodiments, unless otherwise clearly defined and limited, the first feature being "on" or "under" 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 top of" 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 "under", "beneath" and "underneath" 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.

[0042] See Figures 1 to 5As shown in the figure, an endoscopic minimally invasive instrument with a lockable slip ring provided by an embodiment of the present application includes: a handle 1, an elastic tube, an end effector, a cable, and a slip ring 5. A handle cap 7 is provided at the end of the handle 1, and the handle cap 7 has a locking portion. One end of the elastic tube is connected to the handle cap 7. The end effector can be any one of a sampling forceps head, a hemostatic clip, a snare, and a staple cartridge assembly. The end effector is located at one end of the elastic tube away from the handle 1. The cable is slidably disposed within the elastic tube. One end of the cable is drivingly connected to the end effector. The slip ring 5 is slidably disposed on the handle 1, and the other end of the slip ring 5 is drivingly connected to the cable. The slip ring 5 has a locking engagement portion. The slip ring 5 has a locked state. In the locked state, the slip ring 5 slides to one side of the handle cap 7, and the locking engagement portion and the locking portion are locked in cooperation.

[0043] The locking portion is provided on the handle cap 7 of the endoscopic minimally invasive instrument of the present application, which can lock the slip ring 5 on the handle cap 7, 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 other related operations of the operator.

[0044] Taking the tissue suturing device as an example, the end effector may include a staple cartridge assembly 300. When it is necessary to replace the staple cartridge assembly 300, the operator slides the slip ring 5 so that the releaser 8 at the end of the cable extends out of the elastic tube. At this time, the slip ring 5 contacts the handle cap 7, and the locking engagement portion and the locking portion are locked in cooperation to lock the slip ring 5 on the handle cap 7. The cable will not move along the elastic tube, and the releaser 8 remains extended out of the elastic tube. The operator does not need to keep holding the slip ring 5 to prevent it from moving back and forth. The operator can conveniently perform the operation of assembling the new staple cartridge assembly 300 on the releaser 8, reducing the fatigue intensity of the operating fingers and improving the operation efficiency, thus accelerating the surgical progress.

[0045] In some possible implementation schemes, referring to Figure 3 As shown in the figure, the handle 1 includes two rod bodies 11 arranged at intervals, and a strip groove 13 is formed between the two rod bodies 11. The handle cap 7 is located at one end of the two rod bodies 11 and sleeved on the two rod bodies 11. Combining Figures 1 to 3 As shown in the figure, the slip ring 5 includes an outer sleeve 51 and an inner slider 52. 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, and the locking engagement portion is provided on the inner slider 52. In the locked state, the outer sleeve 51 abuts against the handle cap 7, and the end of the inner slider 52 extends into the inner side of the handle cap 7, so that the locking engagement portion on the inner slider 52 and the locking portion on the handle cap 7 are locked in cooperation.

[0046] In some possible implementation schemes, combiningFigures 1 to 3 As shown, the locking part includes a bayonet 71 provided on the handle cap 7, and the locking and mating part includes a first claw 5222 provided on the inner slider 52. In the locked state, the first claw 5222 is snapped into the bayonet 71. The locking part and the locking and mating part are snap-fitted by a snap structure, which has a simple structure and a reliable locking structure.

[0047] In some possible embodiments, the inner slider 52 has a main block 521 and an extension 522. The main block 521 is located inside the outer sleeve 51. One end of the extension 522 is connected to the main block 521, and the other end of the extension 522 extends out of the outer sleeve 51, and the first claw 5222 is provided.

[0048] When the extension 522 extends out of the outer sleeve 51 and can slide in the outer sleeve 51 until it abuts against the handle cap 7, the extension 522 extends into the inner side of the handle cap 7 to be snapped into the handle cap 7.

[0049] In some possible embodiments, see Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the handle cap 7 includes a cap body and an unlocking part 72. The cap body has the bayonet 71. The unlocking part 72 is located in the bayonet 71 and is connected to the cap body. Under the action of an external force, the unlocking part 72 can move towards the inner side of the bayonet 71 to push the first claw 5222 out of the bayonet 71. When there is no external force, there is a gap between the unlocking part 72 and the first claw 5222, and the first claw 5222 will not be pushed, and the first claw 5222 can be stably snapped into the bayonet 71. The unlocking part 72 can be integrally formed with the cap body or a structural member added to the cap body. The unlocking part 72 has a certain elastic deformation ability and can restore the deformation when the external force is removed.

[0050] In some possible embodiments, see Figure 2 As shown, the unlocking part 72 is provided with an avoidance notch 721 on the side facing the handle 1. In the locked state, the first claw 5222 partially extends into the avoidance notch 721. By providing the avoidance notch 721 on the unlocking part 72, a accommodation space can be reserved for the first claw 5222, making full use of the space, making the whole instrument structure compact, and being beneficial to reducing the size of the instrument.

[0051] In some possible embodiments, the unlocking part 72 has an outer convex part 722 protruding from the bayonet 71. When it is necessary to unlock the slip ring 5, the operator can press the outer convex part 722 with a finger to deform the unlocking part 72 towards the inner side of the handle cap 7 to abut against the first claw 5222, so that the first claw 5222 disengages from the bayonet 71.

[0052] In some possible embodiments, a slotted opening communicating with the strip groove 13 is provided on the handle cap 7, and the slotted opening encloses to form the unlocking portion 72. That is, the unlocking portion 72 is a slotted block formed by slotting on the handle cap 7. The unlocking portion 72 and the cap body are an integral part. One end of the unlocking portion 72 is connected to the cap body, and the other end of the unlocking portion 72 is suspended. The unlocking portion 72 is of a cantilever structure.

[0053] In some possible embodiments, referring to Figure 2 and Figure 5 As 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 is provided on the main block 521 of the inner slider 52, and a second claw 5223 is provided on the extension body 522. The positioning block 5212 is embedded in the limiting groove 512, and the second claw 5223 is clamped in the clamping groove 513. The outer sleeve and the inner slider 52 are clamped and limited in cooperation, and the two can only move synchronously along the handle 1. Among them, the second claw 5223 is located between the first claw 5222 and the main block 521, and does not affect the clamping cooperation between the first claw 5222 and the handle cap 7.

[0054] 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.

[0055] 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 concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

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

2. The endoscopic minimally invasive instrument with a lockable slip ring according to claim 1, characterized in that, The handle includes two rod bodies disposed at intervals, and a strip groove is formed between the two rod bodies; The handle cap is located at one end of the two rod bodies and sleeved on the two rod bodies; The slip ring includes an outer sleeve and an inner slider, 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 locking engagement portion is disposed on the inner slider.

3. The slip ring lockable endoscopic minimally invasive instrument according to claim 2, wherein, The locking portion includes a bayonet provided on the handle cap; The locking engagement portion includes a first claw provided on the inner slider; In the locked state, the first claw is snapped into the bayonet.

4. The slip ring lockable endoscopic minimally invasive instrument according to claim 3, wherein, The inner slider has a main block body and an extension body, the main block body is located inside the outer sleeve, one end of the extension body is connected to the main block body, the other end of the extension body extends out of the outer sleeve, and the first claw is provided.

5. The slip ring lockable endoscopic minimally invasive instrument according to claim 4, wherein, The handle cap includes a cap body and an unlocking portion; The cap body has the bayonet, the unlocking portion is located in the bayonet, and the unlocking portion is connected to the cap body; Under the action of an external force, the unlocking portion can move towards the inner side of the bayonet to push the first claw out of the bayonet.

6. The slip ring lockable minimally invasive endoscopic instrument according to claim 5, wherein, A relief notch is provided on a side of the unlocking portion facing the handle; In the locked state, the first claw partially extends into the relief notch.

7. The endoscope minimally invasive instrument with a slip ring lock according to claim 5, characterized in that The unlocking portion has an outer convex portion protruding from the bayonet.

8. The slip ring lockable endoscopic minimally invasive instrument according to claim 5, characterized in that, A slotted opening communicating with the strip groove is provided on the handle cap, and the slotted opening encloses to form the unlocking portion.

9. The slip ring lockable endoscopic minimally invasive instrument according to any one of claims 4-8, characterized in that, A limiting groove and a card slot are provided on the inner wall of the outer sleeve; A positioning block is provided on the main block body of the inner slider, and a second claw is provided on the extension body; The positioning block is embedded in the limiting groove, and the second claw is snapped into the card slot.

10. The slip ring lockable endoscopic minimally invasive instrument according to claim 9, characterized in that, The second claw is located between the first claw and the main block body.

Images