CN219962822U - Endoscope structure - Google Patents

Abstract

The utility model discloses an endoscope structure which comprises a first traction wire, a second traction wire, a first guide tube and a second guide tube, wherein the first traction wire and the second traction wire are used for controlling the bending and resetting of a controllable bending section, the first traction wire is sleeved with the first guide tube, and the second traction wire is sleeved with the second guide tube. The first traction wire passes through the first guide tube and is movable relative to the first guide tube, and the second traction wire passes through the second guide tube and is movable relative to the second guide tube. This endoscope structure is through letting the stand pipe be located the part relative fixed in straight pipe section of straight pipe section, and the stand pipe be located the part of handle can for the handle activity for under the condition of stand pipe installation in the endoscope, still keep certain mobility, be difficult for distortion because of external force effect, improved the durability of stand pipe.

Description

Endoscope structure

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an endoscope structure.

Background

Endoscopes are a common type of medical device that include a handle and an insertion tube that is controlled by the handle (the insertion tube most include a controllable bending section) to pass through a natural or surgically formed orifice of the body.

In the prior art, a user may manipulate the bending of a controllable bending section to adjust the position and orientation of the lens at the distal end (i.e., the tip portion) while manipulating the endoscope. When the controllable bending section is adjusted to bend, the traction wire can be stretched, so that the traction wire rubs with other structures of the endoscope, and the traction wire is damaged. The applicant knows that the pull wire of a part of the endoscope is sleeved with a sleeve for preventing the pull wire from being damaged, two ends of the sleeve are fixedly connected, the proximal end of the catheter is fixedly connected to a copper column of the handle shell, and if the endoscope pipeline rotates, the sleeve is easily twisted, so that the medical instrument is damaged.

Disclosure of Invention

In order to overcome at least one of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an endoscope structure for solving the problem that the guide tube cannot rotate in the prior art.

The disclosure provides an endoscope structure, comprising a handle, an outer sleeve, a control piece and a traction wire, wherein the control piece is positioned in the handle, and the outer sleeve comprises a controllable bending section and a straight pipe section; the controllable bending section, the straight pipe section and the handle are sequentially connected from the distal end of the endoscope structure to the proximal end of the endoscope structure; the control piece can be bent through the traction wire so as to control the controllable bending section, the endoscope further comprises a guide tube, the distal end of the guide tube is fixed in the straight tube section, the guide tube extends to the inside of the handle along the straight tube section towards the proximal end, and the part of the guide tube, which is positioned on the handle, can move relative to the handle, and the guide tube is sleeved outside the traction wire.

Optionally, the pull wire is movable relative to the guide tube.

Optionally, the middle section of the guide tube is fixedly connected with the proximal end of the straight tube section, wherein the middle section of the guide tube is a section between the distal end of the guide tube and the proximal end of the guide tube.

Optionally, the distal end of the guide tube is fixedly connected with the straight tube section by any one of electric welding, laser welding, friction welding, brazing and high polymer glue bonding.

Optionally, the middle section of the guide tube is fixedly connected with the proximal end of the straight tube section by any one of electric welding, laser welding, friction welding, brazing and high polymer glue bonding.

Optionally, a limiting hole is formed in the handle, and the proximal end of the guide tube is inserted into the limiting hole and the guide tube can move relative to the limiting hole.

Optionally, the proximal end of the guide tube is rotatable within the limiting aperture.

Optionally, the straight tube section forms a limiting member, and the distal end of the guide tube is fixedly connected to the limiting member to be fixedly connected with the straight tube section.

Optionally, the control member is a rotary table, and the controllable bending section is driven to bend by rotating the control member to pull or loosen the traction wire.

Optionally, the device further comprises a plurality of traction wires and a plurality of guide pipes, wherein the traction wires and the guide pipes are in one-to-one correspondence, and the guide pipes are sleeved outside the corresponding traction wires.

Optionally, the guide tube has elasticity.

The part of the guide tube of the endoscope structure, which is positioned on the handle, can move relative to the handle, so that the guide tube has high mobility, can move relative to the handle under the action of external force, is not easy to twist, and prolongs the service life of the guide tube.

Drawings

FIG. 1 is a schematic view of an endoscope structure in one or more embodiments of the present utility model.

Fig. 2a is a schematic structural view of a controllable bending section in a certain state.

Fig. 2b is a schematic view of the structure of the controllably bending section in another state.

Fig. 3 is a cross-sectional view of section A-A in fig. 1.

Fig. 4 is a schematic view of the endoscope structure of fig. 1 at another angle.

Fig. 5 is a cross-sectional view of the endoscope structure of fig. 1.

Fig. 6 is an enlarged view of region D in fig. 5.

Wherein the reference numerals have the following meanings:

100. an endoscope structure; 110. a handle; 111. a first housing; 112. a second housing; 113. a first limit part; 114. a second limit part; 115. a first limiting hole; 116. a second limiting hole; 117. a limit groove; 120. an outer sleeve; 121. a controllable bending section; 122. a straight pipe section; 9. a control member; 10. a first traction wire; 11. a second traction wire; 12. a first guide tube; 13. a second guide tube; 14. a restriction member; 1401. a first via hole; 1402. a second via hole; 15. a distal end of the first guide tube; 16. a distal end of a second guide tube; 17. a middle section of the first guide tube; 18. a middle section of the second guide tube; 19. a proximal end of the first guide tube; 20. the proximal end of the second guide tube.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1-5, an endoscope structure 100 of the present disclosure includes a handle 110, an outer sleeve 120, a control member 9, and pull wires 10, 11, the control member 9 being disposed on the handle 110, the outer sleeve 120 including a controllable curved section 121 and a straight section 122; the controllable bending section 121, the straight section 122 and the handle 110 are connected in sequence from the distal end of the endoscope structure to the proximal end of the endoscope structure; the control member 9 is capable of being bent by means of the pull wires 10, 11 to control the controllable bending section 121, the endoscope further comprises guide tubes 12,13, distal ends 15, 16 of the guide tubes 12,13 are fixed in the straight tube section 122, the guide tubes 12,13 extend proximally along the straight tube section 122 into the handle 110, and a portion of the guide tubes 12,13 located in the handle 110 is movable relative to the handle 110, wherein the guide tubes 12,13 are sleeved outside the pull wires 10, 11. By fixing the guide tubes 12,13 to the straight tube section 122, and enabling the portion of the guide tubes 12,13 located at the handle 110 to move relative to the handle 110, the guide tubes 12,13 still maintain a certain degree of movement in the handle 110, and are not easily twisted due to external forces, thereby improving the durability of the guide tubes 12, 13.

It should be noted that, when the bending of the controllable bending section 121 is controlled by the traction wires 10, 11, as shown in fig. 2b, the distal-most end of the controllable bending section 121 may be oriented at different angles, and at this time, the straight tube section 122 may not bend or the magnitude of bending deformation may be small. The distal-most end of the steerable curved segment 121 may be equipped with an optical sensor or the like to capture an image.

For better illustration and display of the endoscope structure 100, a proximal-to-distal direction M is identified in fig. 1, 2a and 2 b.

Specifically, the endoscope structure 100 includes a first traction wire 10, a second traction wire 11, a first guiding tube 12 and a second guiding tube 13, wherein the first traction wire 10 and the second traction wire 11 can control the controllable bending section 121 to bend, the first traction wire 10 is sleeved with the first guiding tube 12, and the second traction wire 11 is sleeved with the second guiding tube 13. The distal end 15 of the first guide tube 12 and the distal end 16 of the second guide tube 13 are secured within the straight tube section 122. The first guide tube 12 extends proximally into the handle 110 along the straight tube segment 122, and a portion of the first guide tube 12 located in the handle 110 is movable relative to the handle 110, wherein the first guide tube 12 is sleeved outside the first traction wire 10. The second guiding tube 13 extends proximally into the handle 110 along the straight tube section 122, and a portion of the second guiding tube 13 located in the handle 110 is movable relative to the handle 110, wherein the second guiding tube 13 is sleeved outside the second traction wire 11.

And the proximal end of the first traction wire 10 is connected with the control member 9, the distal end of the first traction wire 10 is connected with the controllable bending section 121, the proximal end of the second traction wire 11 is connected with the control member 9, the distal end of the second traction wire 11 is connected with the controllable bending section 121, and the control member 9 is used for adjusting the tightness of the first traction wire 10 and the second traction wire 11 to control the bending of the controllable bending section 121.

In some embodiments, the control member 9 is a dial, the proximal end of the first traction wire 10 is connected to the dial, the distal end is connected to the controllable bending section 121, the proximal end of the second traction wire 11 is connected to the dial, the distal end is connected to the controllable bending section 121, and the first traction wire 10 is disposed opposite the second traction wire 11 on both sides of the controllable bending section 121.

Specifically, the proximal end of the first traction wire 10 is passed through the proximal end of the first guiding tube 12 to be connected with the turntable. The proximal end of the second traction wire 11 is passed through the proximal end of the second guiding tube 13 to be connected with the turntable.

By rotating the turntable, the first traction wire 10 can be stretched, the second traction wire 11 can be contracted, or the second traction wire 11 can be stretched, and the second traction wire 11 can be contracted, so that the bending direction of the controllable bending section 121 is adjusted, and the direct contact friction between the first traction wire 10 and the second traction wire 11 and other structures is avoided due to the arrangement of the guide tube.

Meanwhile, in some embodiments, the control member 9 may be other structures than a dial, and the present disclosure is not particularly limited.

For a portion of the endoscope, the outer sleeve 120 may be rotated relative to the handle 110. When the outer sleeve 120 rotates relative to the handle 110, the first guide tube 12 and the second guide tube 13 are driven to move, so that the first guide tube 12 and the second guide tube 13 are twisted. Thus, optionally, the distal end 15 of the first guide tube 12 is fixedly connected to the distal end of the straight tube section 122, the middle section 17 of the first guide tube 12 is fixedly connected to the proximal end of the straight tube section 122, the distal end 16 of the second guide tube 13 is fixedly connected to the distal end of the straight tube section 122, and the middle section 18 of the second guide tube 13 is fixedly connected to the proximal end of the straight tube section 122, so as to better fix the first guide tube 12 and the second guide tube 13 and avoid the random movement of the parts of the first guide tube 12 and the second guide tube 13 located in the straight tube section 122.

It should be further noted that the middle section 17 of the first guide tube 12 is a section located between the distal end 15 of the first guide tube 12 and the proximal end 19 of the first guide tube 12. The middle section 18 of the second guide tube 13 is a section between the distal end 16 of the second guide tube 13 and the proximal end 20 of the second guide tube 13.

Alternatively, the first traction wire 10 passes through the first guiding tube 12 and is movable relative to the first guiding tube 12, and the second traction wire 11 passes through the second guiding tube 13 and is movable relative to the second guiding tube 13.

Optionally, a first limiting hole 115 and a second limiting hole 116 are formed in the handle 110, the first guide tube 12 is inserted into the first limiting hole 115, the first guide tube 12 can move relative to the first limiting hole 15, the second guide tube 13 is inserted into the second limiting hole 116, and the second guide tube 13 can move relative to the second limiting hole 15. Optionally, the proximal end 19 of the first guide tube 12 can rotate within the first stop hole 115. The proximal end 20 of the second guide tube 13 is rotatable within the second limiting aperture 116.

It should be noted that, as shown in fig. 2a and 2b, since the first guiding tube 12 and the second guiding tube 13 are only fixed to the straight tube section 122 and are not fixed to the controllable bending section 121, when the first traction wire 10 and the second traction wire 11 control the bending of the controllable bending section 121, the first guiding tube 12 and the second guiding tube 13 will not bend due to the bending of the controllable bending section 121.

It should be noted that, in normal circumstances, the distal end of the first traction wire 10 passes through the distal end 15 of the first guiding tube 12, and the distal end of the first traction wire 10 is connected to the controllable bending section 121. While the distal end of the second pull wire 11 likewise passes through the distal end of the second guiding tube 13, and the distal end of the second pull wire 11 is connected to the controllably curved segment 121.

Optionally, the distal ends of the guide tubes 12,13 are fixedly connected to the distal end of the straight tube segment 122 by any one of electric welding, laser welding, friction welding, soldering, and polymer glue bonding, and the middle sections of the guide tubes 12,13 are fixedly connected to the proximal end of the straight tube segment 122 by any one of electric welding, laser welding, friction welding, soldering, and polymer glue bonding. Specifically, the distal end 15 of the first guide tube 12 is fixedly connected with the distal end of the straight tube section 122 by any one of electric welding, laser welding, friction welding, brazing and high polymer glue bonding; the distal end 16 of the second guide tube 13 is fixedly connected to the distal end of the straight tube segment 122 by any one of electric welding, laser welding, friction welding, brazing, and polymer glue bonding. The middle section 17 of the first guide tube 12 is fixedly connected with the proximal end of the straight tube section 122 by any one of electric welding, laser welding, friction welding, brazing and high polymer glue bonding; the middle section 18 of the second guide tube 13 is fixedly connected with the proximal end of the straight tube section 122 by any one of electric welding, laser welding, friction welding, brazing and high polymer glue bonding.

Since the straight tube section 122 may in some cases have a small magnitude of bending or deformation, in some alternative embodiments the first guide tube 12 and the second guide tube 13 are resilient.

More specifically, the proximal end 19 of the first guide tube 12 passes through the first stop hole 115 in a distal-to-proximal direction such that the first stop hole 115 is located between the distal end 15 of the first guide tube 12 and the proximal end 19 of the first guide tube 12, and the distal end 15 of the first guide tube 12 is secured to the straight tube segment 122. Wherein the distance between the proximal end 19 of the first guide tube 12 and the first limiting aperture 115 is not less than 0.5mm. The proximal end 20 of the second guide tube 13 passes through the second limiting aperture 116 such that the second limiting aperture 116 is located between the distal end of the second guide tube 13 and the proximal end 20 of the second guide tube 13, and the distal end of the second guide tube 13 is secured to the straight tube section 122, wherein the spacing between the proximal end 20 of the second guide tube 13 and the second limiting aperture 116 is not less than 0.5mm.

The first limiting hole 115 and the second limiting hole 116 can limit the movable positions of the first guide tube 12 and the second guide tube 13 respectively. Therefore, when the straight tube section 122 is bent or deformed to a small extent in some cases, the first guide tube 12 and the second guide tube 13 may rotate relatively, but not disengage from the first limiting hole 115 and the second limiting hole 116. The distance between the proximal end of the first guide tube 12 and the first limiting hole 115 is not less than 0.5mm, and the distance between the proximal end of the second guide tube 13 and the second limiting hole 116 is not less than 0.5mm, so as to provide a reserved space for the movement of the first guide tube 12 and the second guide tube 13, and avoid the separation from the first limiting hole 115 and the second limiting hole 116 when the first guide tube 12 and the second guide tube 13 move.

In particular, as shown in fig. 4-6, the handle includes a first housing 111 and a second housing 112. The second housing 112 of the handle 110 is formed with a second limiting portion 114, and the first housing 111 and the second limiting portion 114 cooperate to form a first limiting hole 115 and a second limiting hole 116.

Optionally, a limiting groove 117 is formed on the handle to limit the movement of the first guide tube 12 and the second guide tube 13.

To better limit the movement path of the first traction wire 10 and the second traction wire 11, in some alternative embodiments, as shown in fig. 3, the straight tube section 122 forms a limiting member 14, the distal end of the first guiding tube 12 is fixedly connected to the limiting member 14, and the distal end of the second guiding tube 13 is fixedly connected to the limiting member 14. Alternatively, as shown in fig. 3, the restriction member 14 is formed with a first via hole 1401 and a second via hole 1402, the distal end of the first fixing tube 12 is located in the first via hole 1401 and fixed to the first via hole 1401, and the distal end of the second guide tube 13 is located in the second via hole 1402 and fixed to the second via hole 1402.

In other embodiments, the control member 9 may be replaced with other structures known in the art capable of pulling the first traction wire 10 and the second traction wire 11.

Optionally, the device further comprises a plurality of traction wires and a plurality of guide pipes, wherein the traction wires and the guide pipes are in one-to-one correspondence, and the guide pipes are sleeved outside the corresponding traction wires. The multiple root refers to more than 1 root. And although two traction wires (i.e., the first traction wire 10 and the second traction wire 11) and two guide tubes (i.e., the first guide tube 12 and the second guide tube 13) are included as shown in fig. 1, the number of traction wires and guide tubes may be 3, 4 or more, and is not limited to 2 as shown in fig. 1-4. Similarly, the endoscope structure 100 is not limited to 2 limiting holes (the first limiting hole 115 and the second limiting hole 116), and the number of limiting holes may be 3, 4 or more according to circumstances.

Typically, a plurality of traction wires should be provided with a corresponding number of guide tubes, but in some embodiments, some traction wires may be provided with guide tubes corresponding to the traction wires, while others may not be provided with corresponding guide tubes.

As shown in fig. 5-6, the limiting holes 115, 116 and the control member 9 are disposed in the handle 110, and the control member 9 on the handle 110 is used to control the tightness of the first traction wire 10 and the second traction wire 11, so as to bend the controllable bending section 121. It should be noted that the guide tube does not necessarily need to protect most of the traction wire, but it is also possible to protect a small section of the traction wire.

The endoscope structure of some embodiments protects the traction wire well through the guide tube, and reduces damage to the traction wire.

It should be understood that normal refers to the state when the outer sleeve 120 in the endoscope structure 100 is not bent.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. An endoscope structure comprises a handle (110), an outer sleeve (120), a control element (9) and traction wires (10, 11), wherein the control element (9) is positioned in the handle (110), and the outer sleeve (120) comprises a controllable bending section (121) and a straight pipe section (122); the controllable bending section (121), the straight tube section (122) and the handle (110) are sequentially connected from the distal end of the endoscope structure to the proximal end of the endoscope structure; the control piece (9) can be bent through the traction wires (10, 11) so as to control the controllable bending section (121), and is characterized in that the endoscope further comprises guide pipes (12, 13), the distal ends of the guide pipes (12, 13) are fixed in the straight pipe sections (122), the guide pipes (12, 13) extend to the inside of the handles (110) along the proximal ends of the straight pipe sections (122), and the parts of the guide pipes (12, 13) located in the handles (110) can move relative to the handles (110), wherein the guide pipes (12, 13) are sleeved outside the traction wires (10, 11).

2. An endoscope structure according to claim 1, characterized in that the pull wires (10, 11) are movable relative to the guide tubes (12, 13).

3. The endoscope structure according to claim 1, characterized in that a middle section of the guide tube (12, 13) is fixedly connected to a proximal end of the straight tube section (122), wherein the middle section of the guide tube (12, 13) is a section located between a distal end of the guide tube (12, 13) and a proximal end of the guide tube (12, 13).

4. An endoscope structure according to claim 3, characterized in that the distal ends of said guide tubes (12, 13) are fixedly connected to said straight tube section (122) by any one of electric welding, laser welding, friction welding, soldering, polymer glue bonding, and the middle sections of said guide tubes (12, 13) are fixedly connected to the proximal ends of said straight tube section (122) by any one of electric welding, laser welding, friction welding, soldering, polymer glue bonding.

5. The endoscope structure according to claim 4, characterized in that a limiting hole (115, 116) is provided in the handle (110), the proximal end of the guide tube (12, 13) is arranged in the limiting hole (115, 116) in a penetrating manner, and the guide tube (12, 13) is movable relative to the limiting hole (115, 116).

6. An endoscope structure according to claim 5, characterized in that the proximal end of the guide tube (12, 13) is rotatable within the limiting aperture (115, 116).

7. An endoscope structure according to claim 1, characterized in that the straight tube section (122) is formed with a restriction member (14), and the distal ends of the guide tubes (12, 13) are fixedly connected to the restriction member (14) to be fixedly connected with the straight tube section (122).

8. An endoscope structure according to claim 1, characterized in that the control member (9) is a turntable, the controllable bending section (121) being driven to bend by turning the control member (9) to pull or release the pull wires (10, 11).

9. The endoscope structure according to any one of claims 1-8, further comprising a plurality of said pull wires (10, 11) and a plurality of guide tubes (12, 13), wherein said pull wires (10, 11) are in one-to-one correspondence with said guide tubes (12, 13), and wherein said guide tubes (12, 13) are sleeved outside said corresponding pull wires (10, 11).

10. An endoscope structure according to any of claims 1-8, characterized in that said guide tube (12, 13) has elasticity.