Fixator applied to jaw opening of endoscope

Abstract

The utility model belongs to the field of medical instruments, and provides a fixator applied to a jaw opening of an endoscope, the fixator mainly comprises a lower connecting seat, an upper connecting seat and an elastic fixing piece, the lower connecting seat is provided with a first buckle and a first threaded section, and the first buckle is matched with a first clamping groove of the jaw opening of the endoscope; the upper connecting base is detachably arranged on the lower connecting base and provided with a second threaded section matched with the first threaded section, the elastic fixing piece is provided with a third through channel and arranged on the upper connecting base or the lower connecting base, and when the first threaded section and the second threaded section are fixed in a matched mode, the third channel of the elastic fixing piece is compressed; and when the first threaded section is separated from the second threaded section, the third channel of the elastic fixing piece recovers to the initial state. By the adoption of the structure, elastic contraction of the third channel can be achieved only through rotation, so that the outer sheath arranged in the third channel is extruded, the outer sheath is fixed relative to the jaw opening, and the risk of target missing is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically refers to a fixator for the forceps orifice of an endoscope. Background Technology

[0002] In minimally invasive surgery, endoscopes are often used to insert treatment instruments into the body cavity. For example, in ablation surgery, the endoscope tube is first placed in the body cavity, and then the ablation electrode on the ablation catheter is delivered to the lesion for ablation. Because different types of endoscopes and ablation catheters are available in different sizes, it is not possible to fix the outer sheath of the ablation catheter during the ablation surgery, which can easily increase the risk of off-target and is not conducive to the ablation surgery. Utility Model Content

[0003] This invention provides a fixator for the forceps orifice of an endoscope, which solves the problem in the above-mentioned technical background that the ablation catheter cannot be fixed at the forceps orifice due to inconsistent sizes, types and models, and the outer sheath tube is loose relative to the forceps orifice, which easily leads to the risk of off-target.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] A retainer for use at the orifice of an endoscope, comprising:

[0006] The lower connecting seat is provided with a first buckle, which is adapted to the first groove of the endoscope's forceps passage. The lower connecting seat is provided with a first threaded section, and a through first channel is provided at the corresponding position of the first threaded section. The lower connecting seat is detachably connected to the endoscope's forceps passage through the first buckle.

[0007] The upper connecting seat is detachably mounted on the lower connecting seat. The upper connecting seat has a second threaded segment adapted to the first threaded segment at one end near the lower connecting seat, and a first connecting end at one end away from the lower connecting seat. The first connecting end has a through second channel.

[0008] The elastic fastener has a through third channel and is disposed on the upper connecting seat or the lower connecting seat. The first channel, the second channel and the third channel are coaxially arranged.

[0009] When the first threaded segment and the second threaded segment are engaged and fixed, the third channel of the elastic fastener is compressed; when the first threaded segment and the second threaded segment are disengaged, the third channel of the elastic fastener returns to its initial state.

[0010] In some embodiments, the lower connecting seat is provided with a first snap-fit ​​plate with a U-shaped structure, the first snap-fit ​​plate forming a first snap-fit ​​groove, the first snap-fit ​​groove being adapted to the shape of the endoscope's clamping orifice.

[0011] In some embodiments, the first threaded segment is a first external thread, the second threaded segment is a first internal thread, and the first external thread is adapted to the first internal thread, wherein the first external threaded segment of the lower connecting seat is an elastically retractable structure.

[0012] In some embodiments, the first internal thread has a tapered structure, and the inner radial direction of the first internal thread decreases away from the end of the lower connector.

[0013] In some embodiments, the lower connecting seat is provided with a first limiting ring, and the inner wall of the upper connecting seat is provided with a first limiting surface, wherein the first limiting ring can abut against the first limiting surface.

[0014] In some embodiments, the upper connecting seat is provided with a first fixing sleeve, the elastic fixing member is disposed inside the first fixing sleeve, and a portion of the elastic fixing member extends out of the first fixing sleeve. When the upper connecting seat is connected to the lower connecting seat, the elastic fixing member can abut against the endoscope's clamping orifice.

[0015] In some embodiments, the first fixing sleeve is provided with a first abutting surface of an annular structure on the side near the lower connecting seat, and the first abutting surface abuts against the outer periphery of the endoscope's orifice.

[0016] In some embodiments, a second external thread is provided on the first connecting end, and the first connecting end has a preset length so that the upper connecting seat and the lower connecting seat are locked and fixed.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This application provides a detachable threaded upper and lower connecting seat. The lower connecting seat has a first snap-fit ​​for engaging and fixing with the endoscope's clamping orifice. Meanwhile, an elastic fixing member is provided on the upper or lower connecting seat. The first channel of the elastic fixing member is contracted through the threaded engagement, thereby fixing the outer sheath tube relative to the endoscope's clamping orifice and avoiding the risk of misalignment.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0020] Figure 1 This is an exploded view of a clamping device for use in the orifice of an endoscope according to the present invention.

[0021] Figure 2 This is a cross-sectional view of a clamping device for use in the orifice of an endoscope according to the present invention;

[0022] Figure 3 This is a perspective view of the upper connecting seat of this utility model;

[0023] Figure 4 This is a cross-sectional view of the upper connecting seat of this utility model;

[0024] Figure 5 This is a perspective view of the lower connecting seat of this utility model;

[0025] Figure 6 This is a cross-sectional view of the lower connecting seat of this utility model;

[0026] Figure 7 This is an exploded view of the assembly of a clamp holder for connecting an endoscope orifice to the endoscope, according to the present invention.

[0027] Figure 8 for Figure 7 Enlarged view of point A in the middle. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the embodiments, unless otherwise stated, the terms "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the present application must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0029] like Figure 1 As shown, this utility model provides a fixator for the forceps orifice of an endoscope, mainly comprising a lower connecting seat 200, an upper connecting seat 100, and an elastic fixing member 300. Specifically, as... Figure 5 and Figure 6 As shown, the lower connecting seat 200 is provided with a first latch 202, which is adapted to the first slot 4011 of the forceps passage 401 of the endoscope 400, as follows: Figure 7 and Figure 8 As shown, when the first buckle 202 is engaged above the first slot 4011, the lower connecting seat 200 is engaged and fixed relative to the endoscope 400, and the lower connecting seat 200 is limited and fixed relative to the axial direction of the forceps passage 401. A first threaded section 201 is provided on the lower connecting seat 200, and a first channel 204 is provided at the position corresponding to the first threaded section 201.

[0030] The upper connecting seat 100 is detachably mounted on the lower connecting seat 200, such as... Figure 3and Figure 4 As shown, a second threaded section 104 is provided at one end of the upper connecting seat 100 near the lower connecting seat 200. The second threaded section 104 is adapted to the first threaded section 201. Through the cooperation of the first threaded section 201 and the second threaded section 104, a detachable connection between the upper connecting seat 100 and the lower connecting seat 200 is realized. A first connecting end 101 is provided at one end of the upper connecting seat 100 away from the lower connecting seat 200. The first connecting end 101 is provided with a through second channel 102. The second channel 102 is used for placing the outer sheath tube 501.

[0031] The elastic fixation member 300 is disposed on the upper connecting seat 100 or the lower connecting seat 200. A third channel 301 is provided on the elastic fixation member 300, wherein the first channel 204, the second channel 102, and the third channel 301 are coaxially arranged and secured by the cooperation of the first threaded section 201 and the second threaded section 104. When the two are locked and fixed, the third channel 301 of the elastic fixation member 300 is compressed, thereby the elastic fixation member 300 compresses the metal Luer element disposed on the ablation handle 500, thereby locking and fixing the outer sheath tube 501, thus preventing the outer sheath tube 501 from moving relative to the endoscope 400, further avoiding the risk of off-target, and facilitating the continuous and stable performance of the ablation surgery. When the first threaded section 201 and the second threaded section 104 disengage, the outer sheath tube 501 can move relative to the forceps port 401 to facilitate the delivery of the outer sheath tube 501. In this embodiment, the third channel 301 is a cylindrical tubular structure, which can effectively increase the contact surface between the elastic fastener 301 and the outer sheath tube 501, thereby making the fixing structure more stable.

[0032] In this embodiment, by setting an elastic fastener 300, combined with the upper connecting seat 100 and the lower connecting seat 200, the third channel 301 of the elastic fastener 300 is reduced, thereby fixing the outer sheath tube 501.

[0033] In this embodiment, the elastic fastener 300 is preferably made of rubber, which is easy to deform and can be restored to its initial state, and the rubber material is not easily damaged.

[0034] In one embodiment, a U-shaped first snap-fit ​​plate 203 is further provided on the lower connecting seat 200. The first snap-fit ​​plate 203 forms a first snap-fit ​​groove, which is adapted to the shape of the clamping opening 401 of the endoscope 400. In this application, in order to facilitate the fixed snap-fit ​​of the lower connecting seat 200 onto the endoscope 400, the first snap-fit ​​plate 203 can be interference-fitted with the endoscope 400 to achieve the snap-fit ​​fixation between the two. Combined with the first buckle 202, the lower connecting seat 200 can only be withdrawn from the endoscope 400 through the opening of the U-shaped first snap-fit ​​plate 203, thereby making the fixation of the lower connecting seat 200 relative to the clamping opening 401 more stable.

[0035] In one embodiment, the first threaded segment 201 is a first external thread, and the second threaded segment 104 is a first internal thread. The first internal thread and the first external thread are adapted to each other, and the threaded engagement facilitates the fixing between the upper connecting seat and the lower connecting seat.

[0036] Furthermore, the first internal thread of the upper connecting seat 100 is a tapered structure, and the inner diameter of the first internal thread decreases towards the end away from the lower connecting seat 200. Since the lower connecting seat 200 with the first external thread section is an elastic structure, in conjunction with the first internal thread with the gradually decreasing inner diameter and the rigid structure of the upper connecting seat 100, the first external thread section of the lower connecting seat 200 is squeezed during the rotation of the upper connecting seat 100, thereby squeezing the elastic fixing member 300, reducing the size of the third channel 301, and fixing the outer sheath 501.

[0037] Alternatively, the lower connecting seat 200 can be configured as a rigid structure, and the first threaded section 104 of the upper connecting seat 100 can be configured as an elastic structure. In this case, the upper connecting seat 100 is provided with a first external thread, and the lower connecting seat 200 is provided with a first internal thread. The first external thread increases sequentially from the lower connecting seat 200 to the upper connecting seat 100. When the upper connecting seat 100 is tightened onto the lower connecting seat 200, the lower connecting seat 200 presses against the first external threaded section of the upper connecting seat 100.

[0038] In one embodiment, to prevent over-tightening of the threaded fit between the upper connecting seat 100 and the lower connecting seat 200, a first limiting ring 205 is provided on the lower connecting seat 200, and a first limiting surface 105 is provided on the inner wall of the upper connecting seat 100. When the upper connecting seat 100 and the lower connecting seat 200 are rotated and fixed, and the outer sheath 501 is locked, the first limiting ring 205 abuts against the first limiting surface 105. In this embodiment, the first limiting surface 105 is a continuous annular structure. Optionally, the first limiting surface 105 may also be formed as a discontinuous dot-shaped protrusion.

[0039] In one embodiment, to facilitate the detachable replacement of the elastic fixing member 300 and to ensure its relatively stable fixation on the upper connecting seat 100, a first fixing sleeve 103 is provided on the upper connecting seat 100. The inner wall structure of the first fixing sleeve 103 is adapted to the shape of the elastic fixing member 300, and the elastic fixing member 300 abuts against the inner wall of the first fixing sleeve 103. One end of the elastic fixing member 300 can extend out of the first fixing sleeve 103. When the lower connecting seat 200 is snapped and fixed to the clamping port 401 of the endoscope 400, and the upper connecting seat 100 is connected to the lower connecting seat 200, the clamping port 401 squeezes the protruding part of the elastic fixing member 300, thereby compressing the elastic fixing member 300 and reducing the inner diameter of the third channel 301. This squeezes and fixes the metal Luer element provided on the ablation handle 500, thus fixing the ablation handle 500 relatively to the clamping port 401 of the endoscope 400 and avoiding the risk of off-target.

[0040] Optionally, several through slots may be provided on the side wall of the first fixed sleeve 103, the length direction of the through slots being consistent with the axial direction of the first fixed sleeve 103.

[0041] Furthermore, to make the structure more stable when the first fixing sleeve 103 is fixed relative to the clamping opening 401, an annular first abutment surface 1031 is provided at one end of the first fixing sleeve 103 near the lower connecting seat 200. The inclination angle of the first abutment surface 1031 is consistent with the inclination angle of the outer periphery of the clamping opening 401, thereby making the abutment structure between the first fixing sleeve 103 and the clamping opening 401 more stable. At the same time, a flange structure is provided at one end of the elastic fixing member 300 near the first abutment surface 1031. When the elastic fixing member 300 is installed in the first fixing sleeve 103, the flange structure abuts against the first abutment surface 1031. Through the above arrangement, the elastic fixing member 300 is clamped and fixed between the clamping opening 401 and the first abutment surface 1031, thereby fixing the position of the elastic fixing member 300 relatively.

[0042] In one embodiment, since the upper connector 100 is connected to the ablation handle 500, such as Figure 7 and Figure 8 As shown, the upper connecting seat 100 and the lower connecting seat 200 are connected by a rotating structure. On the one hand, this facilitates the connection between the upper connecting seat 100 and the ablation handle 500. On the other hand, to meet the rotation requirements of the upper connecting seat 100, a second external thread 1011 is provided at the first connecting end 101. The first connecting end 101 has a preset length so that the upper connecting seat 100 can be engaged with the threaded hole of the ablation handle 500 through the second external thread during rotation, and there will be no movement interference between the upper connecting seat 100 and the ablation handle 500.

[0043] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model. These improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A retainer for the orifice of an endoscope, characterized in that, include: The lower connecting seat is provided with a first buckle, which is adapted to the first groove of the endoscope's forceps passage. The lower connecting seat is provided with a first threaded section, and a through first channel is provided at the corresponding position of the first threaded section. The lower connecting seat is detachably connected to the endoscope's forceps passage through the first buckle. The upper connecting seat is detachably mounted on the lower connecting seat. The upper connecting seat has a second threaded segment adapted to the first threaded segment at one end near the lower connecting seat, and a first connecting end at one end away from the lower connecting seat. The first connecting end has a through second channel. The elastic fastener has a through third channel and is disposed on the upper connecting seat or the lower connecting seat. The first channel, the second channel and the third channel are coaxially arranged. When the first threaded segment and the second threaded segment are engaged and fixed, the third channel of the elastic fastener is compressed; when the first threaded segment and the second threaded segment are disengaged, the third channel of the elastic fastener returns to its initial state.

2. The fixator for the orifice of an endoscope according to claim 1, characterized in that, The lower connecting seat is provided with a first snap-fit ​​plate with a U-shaped structure. The first snap-fit ​​plate surrounds and forms a first snap-fit ​​groove, which is adapted to the shape of the endoscope's clamping opening.

3. A retainer for the orifice of an endoscope according to claim 1, characterized in that, The first threaded segment is a first external thread, and the second threaded segment is a first internal thread. The first external thread is adapted to the first internal thread.

4. A retainer for the orifice of an endoscope according to claim 3, characterized in that, The first internal thread has a tapered structure, and the inner radial direction of the first internal thread decreases away from the end of the lower connecting seat.

5. A retainer for the orifice of an endoscope according to claim 1, characterized in that, The lower connecting seat is provided with a first limiting ring, and the inner wall of the upper connecting seat is provided with a first limiting surface, and the first limiting ring can abut against the first limiting surface.

6. A retainer for the orifice of an endoscope according to claim 1, characterized in that, The upper connecting seat is provided with a first fixing sleeve, and the elastic fixing member is disposed inside the first fixing sleeve, with a portion of the elastic fixing member extending out of the first fixing sleeve. When the upper connecting seat is connected to the lower connecting seat, the elastic fixing member can abut against the endoscope's clamping orifice.

7. A retainer for the orifice of an endoscope according to claim 6, characterized in that, The first fixing sleeve has a first abutment surface with an annular structure on the side near the lower connecting seat, and the first abutment surface abuts against the outer periphery of the endoscope's clamping orifice.

8. A retainer for the orifice of an endoscope according to claim 1, characterized in that, The first connecting end is provided with a second external thread, and the first connecting end is provided with a preset length so that the upper connecting seat and the lower connecting seat are locked and fixed.

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