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, the sliding ring and a locking assembly. 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 is arranged in the elastic tube in a sliding and penetrating mode, 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, and the sliding ring is in transmission connection with the other end of the inhaul cable. The locking assembly is arranged on the sliding ring and used for locking the sliding ring to the handle or releasing the sliding ring. The locking assembly is arranged on the endoscope minimally invasive instrument, so that the sliding ring can be locked to 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] The present application relates to the technical field of medical devices, and in particular, to an endoscopic minimally invasive instrument with a lockable slip ring. Background Art

[0002] With the development of medical science and technology, minimally invasive surgery using 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 device to pass through the forceps channel hole of the endoscope and follow the endoscope's lens to reach the target lesion location. Then, the surgeon uses the minimally invasive medical device to perform corresponding surgical operations on the target lesion location. Common minimally invasive medical devices include hemostatic clips, snare devices, sampling forceps, mucosal cutting 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 it is necessary to replace the staple assembly, it is necessary to control the cable to keep extending 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 strength 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] In order to solve one of the above technical defects, an endoscopic 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 endoscopic minimally invasive instrument with a lockable slip ring, comprising:

[0006] A handle;

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

[0008] A distal end actuator, the distal end actuator is located at one 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] A slip ring, the slip ring is slidably disposed on the handle, and the other end of the slip ring is drivingly connected to the cable;

[0011] A locking component, which is arranged on the slip ring and used to lock the slip ring to the handle or release the slip ring.

[0012] Optionally, the handle includes two rod bodies, the two rod bodies are connected, and a through slot is formed between the two rod bodies;

[0013] The locking component is rotatably connected to the slip ring. The locking component has a locking block. The locking block is located in the slot. The dimension of the locking block along the first direction is greater than the distance between the two rod bodies, and the dimension of the locking block along the second direction is less than the distance between the two rod bodies;

[0014] The slip ring has a locked state and an unlocked state. In the locked state, the locking component rotates until the first direction of the locking block is perpendicular to the extending direction of the rod bodies, and the two rod bodies are in an elastically deformed state; in the unlocked state, the locking component rotates until the second direction of the locking block is perpendicular to the extending direction of the rod bodies, and the two rod bodies recover their deformation.

[0015] Optionally, the circumferential end face of the locking block includes two length faces and two width faces. The two length faces are spaced apart and arranged in parallel. The two length faces extend along the first direction. The two width faces are respectively arranged on both sides of the length faces, and the width faces are smoothly connected to the two length faces through arc surfaces;

[0016] In the locked state, the width face is attached to the rod body.

[0017] Optionally, the slip ring has a rotating slot;

[0018] The locking component has a rotating block. The rotating block is connected to the locking block, and the rotating block is rotatably connected to the rotating slot of the slip ring.

[0019] Optionally, the slip ring includes a slip ring body and an extension shell arranged on the slip ring body. The extension shell extends along the handle;

[0020] The rotating slot is arranged on the extension shell.

[0021] Optionally, the endoscopic minimally invasive instrument that the slip ring can lock includes a turntable. The locking block and the rotating block are respectively arranged on both sides of the turntable along the thickness direction;

[0022] The turntable is located between the handle and the extension shell.

[0023] Optionally, the extension shell includes a main board and side edges arranged on both sides of the main board;

[0024] The rotating slot is opened on the main board, and the turntable is located between the two side edges.

[0025] Optionally, a sliding groove is provided on the main board, and the sliding groove extends from the rotating groove to the edge of the main board, and the locking component can slide along the sliding groove to one side of the rotating groove.

[0026] Optionally, the slip ring lockable endoscopic minimally invasive instrument includes a knob;

[0027] An outward convex block is provided on the side of the rotating block facing away from the locking block, the width of the outward convex block is smaller than that of the sliding groove, and the width of the sliding groove is smaller than the outer diameter of the rotating groove;

[0028] The knob is connected to the outward convex block, and the knob and the turntable are limited on both sides of the extension housing.

[0029] Optionally, the knob has a slot;

[0030] The outward convex block is inserted into the slot.

[0031] By adopting the above technical solutions, the present application has the following beneficial effects:

[0032] The locking component provided on the endoscopic minimally invasive instrument of the present application 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

[0033] 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 to the present application. In the drawings:

[0034] Figure 1 Showing a schematic structural diagram of a slip ring lockable endoscopic minimally invasive instrument provided by an embodiment of the present application;

[0035] Figure 2 is Figure 1 another perspective view of;

[0036] Figure 3 Showing a schematic diagram of a slip ring lockable endoscopic minimally invasive instrument provided by an embodiment of the present application in an unlocked state;

[0037] Figure 4 Showing a schematic diagram of a slip ring lockable endoscopic minimally invasive instrument provided by an embodiment of the present application in a locked state;

[0038] Figure 5 Showing a schematic structural diagram of the slip ring of a slip ring lockable endoscopic minimally invasive instrument provided by an embodiment of the present application;

[0039] Figure 6Partial structural diagram of the locking assembly of the slip-ring lockable minimally invasive endoscopic instrument provided by the embodiments of the present application is shown;

[0040] Figure 7 Schematic structural diagram of the knob of the locking assembly of the slip-ring lockable minimally invasive endoscopic instrument provided by the embodiments of the present application is shown. Detailed implementation manners

[0041] 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 may be combined with each other.

[0042] 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 thus should not be construed as a limitation to the present application.

[0043] In the present application and its embodiments, unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may 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 circumstances.

[0044] In the present application and its embodiments, unless otherwise clearly specified and defined, 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" 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 "under" 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.

[0045] See Figures 1 to 7As 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 2, an end effector 3, a cable, a slip ring 5, and a locking assembly 6. One end of the elastic tube 2 is connected to the handle 1. 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 2 away from the handle 1. The cable is slidably disposed within the elastic tube 2. 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 slip ring 5 is drivingly connected to the other end of the cable. The locking assembly 6 is disposed on the slip ring 5 and is configured to lock the slip ring 5 to the handle 1 or release the slip ring 5.

[0046] A locking assembly 6 is provided on 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 2, the position and state of the end effector are kept fixed, reducing the long-term fatigue of the surgeon and facilitating other related operations for the surgeon.

[0047] Taking a 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 surgeon slides the slip ring 5 so that the releaser at the end of the cable extends out of the elastic tube 2, and then the slip ring 5 can be locked to the handle 1 by operating the locking assembly 6. The cable will not move along the elastic tube 2, and the releaser remains extended out of the elastic tube 2. The surgeon does not need to keep holding the slip ring 5 to prevent it from moving back and forth. The surgeon can conveniently perform the operation of assembling a new staple cartridge assembly 300 to the releaser, reducing the fatigue intensity of the operating fingers and improving the operating efficiency, thus accelerating the surgical progress.

[0048] In some possible implementation schemes, as shown in Figure 2 the figure, the handle 1 includes two rod bodies 11. The two rod bodies 11 are connected. A through slot 13 is formed between the two rod bodies 11. The locking assembly 6 is rotatably connected to the slip ring 5. The locking assembly 6 has a locking block 61. The locking block 61 is located within the slot 13. The dimension of the locking block 61 in the first direction is greater than the spacing between the two rod bodies 11, and the dimension of the locking block 61 in the second direction is less than the spacing between the two rod bodies 11. The slip ring 5 has a locked state and an unlocked state. As shown in Figure 4 the figure, in the locked state, the locking assembly 6 rotates until the first direction of the locking block 61 is perpendicular to the extending direction of the rod body 11. The two rod bodies 11 are in an elastically deformed state. The locking block 61 is clamped and fixed by the two rod bodies 11, and the sliding friction between the locking block 61 and the rod body 11 is increased to lock the slip ring 5. As shown in Figure 3As shown, in the unlocked state, the locking component 6 rotates such that the second direction of the lock block 61 is perpendicular to the extending direction of the rod body 11, and the two rod bodies 11 resume deformation. There is a gap between the lock block 61 and the rod body 11, and under the action of an external force, the lock block 61 can slide smoothly along the rod body 11. It should be noted that the first direction and the second direction can be perpendicular to each other.

[0049] In some possible solutions, referring to Figure 6 As shown, the circumferential end face of the lock block 61 includes two length faces 611 and two width faces 612. The two length faces 611 are arranged at intervals and in parallel. The two length faces 611 extend in the first direction. The two width faces 612 are respectively arranged on both sides of the length faces 611, and the width faces 612 are smoothly connected to the two length faces 611 through arc surfaces 613. In the locked state, the width faces 612 are attached to the rod body 11. The smooth transition between the length faces 611 and the width faces 612 reduces the rotational resistance of the lock block 61. Under the action of an external force, the locking component 6 can rotate smoothly without much effort in operation.

[0050] In some possible implementation schemes, in combination with Figure 2 、 Figure 5 and Figure 6 As shown, the slip ring 5 has a rotating groove 5113, and the locking component 6 has a rotating block 62. The rotating block 62 is connected to the lock block 61, and the rotating block 62 is rotatably connected to the rotating groove 5113 of the slip ring 5. The rotating groove 5113 supports the rotation of the rotating block 62. At the same time, the rotating groove 5113 has the function of limiting the rotating block 62. When the position of the rotating block 62 is fixed, it will limit the position of the slip ring 5, making the slip ring 5 fixed and not moving along the handle 1.

[0051] In some possible implementation schemes, the slip ring 5 includes a slip ring body and an extension shell 511 provided on the slip ring body. The extension shell 511 extends along the handle 1, and the rotating groove 5113 is provided on the extension shell 511.

[0052] The rotating groove 5113 is not provided on the slip ring body, which does not affect the structural shape of the slip ring body nor the structural strength of the slip ring body.

[0053] In some possible implementation schemes, in combination with Figure 2 、 Figure 5 and Figure 6 As shown, the locking component 6 includes a turntable 63. The lock block 61 and the rotating block 62 are respectively arranged on both sides of the turntable 63 along the thickness direction. The turntable 63 is located between the handle 1 and the extension shell 511. The turntable 63 plays a limiting role to prevent the lock block 61 from disengaging from the strip groove 13, so that the lock block 61 remains in the strip groove 13, improving the reliability of the instrument.

[0054] In some possible embodiments, the extension housing 511 includes a main board 5111 and edge guards 5114 provided on both sides of the main board 5111. The rotation groove 5113 is formed in the main board 5111, and the turntable 63 is located between the two edge guards 5114. The edge guards 5114 on both sides are vertically connected to the main board 5111, which plays a role in strengthening the structural strength of the extension housing 511 and can shield and protect the turntable 63 at the same time.

[0055] In some possible embodiments, a sliding groove 5112 is provided on the main board 5111. The sliding groove 5112 extends from the rotation groove 5113 to the edge of the main board 5111, and the locking assembly 6 can slide along the sliding groove 5112 to one side of the rotation groove 5113. The provision of the sliding groove 5112 facilitates the assembly of the locking assembly 6 on the extension housing 511.

[0056] See Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown in, the endoscope minimally invasive instrument with a lockable slip ring includes a knob 65. An external convex block 64 is provided on the side of the rotating block 62 facing away from the lock block 61. The width of the external convex block 64 is smaller than that of the sliding groove 5112, and the width of the sliding groove 5112 is smaller than the outer diameter of the rotation groove 5113. The knob 65 is connected to the external convex block 64, and the knob 65 and the turntable 63 are limited to both sides of the extension housing 511. The knob 65 is exposed outside the slip ring 5, which facilitates the operator to rotate the knob 65, and the slip ring 5 can be easily locked or released.

[0057] In some possible embodiments, as shown in combination with Figure 6 and Figure 7 The knob 65 has a slot, and the external convex block 64 is inserted into the slot. The external convex block 64 can be set as a non-cylindrical body. For example, a flat surface is provided on the external convex block 64, and flat surfaces are also provided on some inner walls of the corresponding slot. In the state where the external convex block 64 is inserted into the slot, the flat surface on the external convex block 64 fits with the flat surface of the slot, and the knob 65 and the external convex block 64 can only rotate synchronously and will not rotate relative to each other.

[0058] The foregoing 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. Such repetition is for the purpose of simplification and clarity and does not in 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 may be aware of the application of other processes and / or the use of other materials.

[0059] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0060] 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; An elastic tube, one end of the elastic tube being connected to the handle; An end effector, the end effector being located at one 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; A locking assembly, the locking assembly being disposed on the slip ring for locking the slip ring to the handle or releasing the slip ring.

2. The slip ring lockable endoscopic minimally invasive instrument according to claim 1, characterized in that, The handle includes two rod bodies, the two rod bodies being connected, a through slot being formed between the two rod bodies; The locking assembly is rotatably connected to the slip ring, the locking assembly having a locking block, the locking block being located within the slot, a dimension of the locking block along a first direction being greater than a spacing between the two rod bodies, a dimension of the locking block along a second direction being less than the spacing between the two rod bodies; The slip ring has a locked state and an unlocked state. In the locked state, the locking assembly rotates until a first direction of the locking block is perpendicular to an extending direction of the rod bodies, and the two rod bodies are in an elastically deformed state; In the unlocked state, the locking assembly rotates until a second direction of the locking block is perpendicular to the extending direction of the rod bodies, and the two rod bodies recover their deformation.

3. The endoscope minimally invasive instrument with a slip ring that can be locked according to claim 2, characterized in that, A circumferential end face of the locking block includes two length faces and two width faces, the two length faces being spaced apart and parallel to each other, the two length faces extending along the first direction, the two width faces being respectively disposed on two sides of the length faces, and the width faces being smoothly connected to the two length faces through arc surfaces; In the locked state, the width face abuts against the rod body.

4. The slip ring lockable endoscopic minimally invasive instrument according to claim 2, wherein, The slip ring has a rotation slot; The locking assembly has a rotation block, the rotation block being connected to the locking block, the rotation block being rotatably connected to the rotation slot of the slip ring.

5. The slip ring lockable endoscopic minimally invasive instrument according to claim 4, wherein, The slip ring includes a slip ring body and an extension shell disposed on the slip ring body, the extension shell extending along the handle; The rotation slot is disposed on the extension shell.

6. The slip ring lockable minimally invasive endoscopic instrument according to claim 5, characterized in that, The locking assembly includes a turntable, the locking block and the rotation block being respectively disposed on two sides of the turntable along a thickness direction; The turntable is located between the handle and the extension shell.

7. The slip ring lockable endoscopic minimally invasive instrument according to claim 6, characterized in that, The extension shell includes a main board and side edges disposed on two sides of the main board; The rotation slot is formed on the main board, and the turntable is located between the two side edges.

8. The slip ring lockable endoscopic minimally invasive instrument according to claim 7, wherein A sliding slot is disposed on the main board, the sliding slot extending from the rotation slot to an edge of the main board, and the locking assembly can slide along the sliding slot to one side of the rotation slot.

9. The slip ring lockable endoscopic minimally invasive instrument according to claim 8, wherein, The locking assembly includes a knob; An outward convex block is disposed on a side of the rotation block away from the locking block, a width of the outward convex block being less than a width of the sliding slot, and the width of the sliding slot being less than an outer diameter of the rotation slot; The knob is connected to the outward convex block, and the knob and the turntable are limited to two sides of the extension shell.

10. The slip ring lockable endoscopic minimally invasive instrument according to claim 9, wherein The knob has a slot; The outward convex block is inserted into the slot.

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