Transparent cap used in combination with gastroscope in ESD (Electro-Static Discharge) operation

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a transparent cap used in combination with a gastroscope in an ESD (Electro-Static Discharge) operation, which is mainly used before the operation and is mounted at the tip of the gastroscope. The transparent cap body is provided with a first end connected with the gastroscope; the second end is opposite to the first port; the first end is communicated with the second end, and the transparent cap body is provided with an axis; the axis extends towards the first end and the second end; the extension section is arranged at the second end; the extending section extends in the direction away from the first end by taking the extending direction of the axis of the transparent cap body as a reference, and after the transparent cap body is connected with the gastroscope, the extending section is located above a lens of the gastroscope; the problem that due to the cylindrical structure of a conventional transparent cap, when layer mucous membrane tissue covering a focus is picked, the layer mucous membrane tissue is difficult to enter the focus area from the incisal edge of the mucous membrane tissue, and the operation view is shielded is mainly solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a transparent cap used in combination with a gastroscope in an ESD operation. Background Art

[0002] In endoscopic submucosal dissection (ESD), a cylindrical transparent cap needs to be installed on one end of the gastroscope lens. During the operation, it is used to protect the gastroscope lens, expose the surgical field of view, and reduce damage to the digestive tract by sharp objects. In endoscopic submucosal dissection, the gastroscope lens needs to be inserted under the upper mucosal tissue to be dissected, so as to visually view the surgical area to be dissected, and thus dissect the lesion. At this time, the transparent cap can play a role in lifting the upper mucosal tissue. However, due to the cylindrical structure of the conventional transparent cap, when lifting the mucosal tissue covering the lesion, it is difficult to enter the lesion area from the cutting edge of the upper mucosal tissue, resulting in obstruction of the surgical field of view, and then the submucosal tissue to be dissected cannot be well exposed to the gastroscope lens, which prolongs the operation time and increases the surgical risks such as bleeding and perforation.

[0003] In view of the above problems, the utility model provides a transparent cap used in combination with a gastroscope in an ESD operation. Utility Model Content

[0004] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:

[0005] A transparent cap used in combination with a gastroscope in an ESD operation, comprising:

[0006] A transparent cap body having a first end connected to the gastroscope; and

[0007] a second end opposite to the first port; the first end and the second end are connected to each other, wherein the transparent cap body has an axis; the axis extends toward the first end and the second end;

[0008] An extension section is arranged at the second end; the extension section extends away from the first end based on the axial extension direction of the transparent cap body, wherein after the transparent cap body is connected to the gastroscope, the extension section is located above the gastroscope lens.

[0009] In some embodiments of the present application, the extension section has a starting end and an ending end, the starting end is connected to the second end, wherein at least a portion of the extension section is parallel to the axis; and

[0010] At least a portion of the extension section is bent toward the axial direction so that the terminal end faces the axial direction.

[0011] Further, the extension section comprises:

[0012] a connecting section connected to the second end, wherein the starting end is one end of the connecting section, wherein an outer wall of the connecting section and an outer wall of the transparent cap body are in a tangent relationship with each other;

[0013] The arc segment is integrally connected to the connecting segment, and the terminal end is an end of the arc segment that is not connected to the connecting segment, wherein the outer wall of the arc segment is tangent to the outer wall of the connecting segment.

[0014] Furthermore, the overall length of the extension section is 3 to 4 mm.

[0015] In some embodiments of the present application, the starting end of the extension section and the second end of the transparent cap body are integrally connected.

[0016] Furthermore, the transparent cap body is made of transparent plastic, wherein the extension section is made of the same material as the transparent cap body.

[0017] In this embodiment, the second end of the transparent cap body has an inclined end surface, wherein the extension section is arranged on the inclined end surface of the second end and is farthest from the first end.

[0018] Furthermore, there is an angle between the inclined end surface and the axis, wherein the degree of the angle is between 45° and 90°.

[0019] In some embodiments of the present application, an annular protrusion is provided on the inner wall of the transparent cap body, wherein the center of the annular protrusion coincides with the axis, and after the transparent cap body is connected to the gastroscope, the tip of the gastroscope abuts against the annular protrusion.

[0020] Furthermore, the inner diameter of the annular protrusion is at most 1 mm larger than the inner diameter of the transparent cap body, so that the annular protrusion does not block the field of view of the gastroscope.

[0021] Beneficial effects of the utility model:

[0022] 1. An extension section is arranged at one end of the transparent cap body. After the transparent cap body is combined with the gastroscope, the extension section is located directly above the front end of the gastroscope. When the lesion is peeled off, the extension section enters the submucosal space from the cutting edge of the upper mucosal tissue peeled off previously, so that the peeled upper mucosal tissue is placed on the extension section; thereby, the lesion to be peeled off in the submucosal layer is exposed to the field of view of the gastroscope, so as to facilitate the removal of the lesion, shorten the operation time, and reduce the operation risk.

[0023] 2. By setting the extension section to be partially bent toward the axis of the transparent cap body, a curved and smooth outer wall is formed at the front end of the extension section, so that the extension section can easily enter the submucosal space from the cutting edge of the upper mucosal tissue peeled off previously with the gastroscope, thereby shortening the time of exposing the lesion location and reducing the difficulty of operation.

[0024] 3. By setting the second end of the transparent cap body as an inclined end surface, the transparent cap body further expands the surgical field of view and the operating space of the instrument in the process of protecting the gastroscope lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the first end of the utility model;

[0027] Figure 3 This is a schematic diagram of the second end structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the extension section of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure after the transparent cap body of the utility model is connected to the gastroscope;

[0030] Figure 6 This is a schematic diagram of the structure of the transparent cap body of the utility model without an extension section;

[0031] Figure 7 This is a schematic diagram of the structure of the utility model after the transparent cap body and the gastroscope are separated;

[0032] In the figure, 1. transparent cap body; 11. first end; 12. second end; 121. inclined end surface; 122. far point; 123. near point; 124. angle; 13. axis; 14. extension section; 141. connecting section; 142. arc section; 15. annular protrusion; 2. gastroscope. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Figure 1 and Figure 4 , showing the main technical content of this embodiment, this specific embodiment provides a transparent cap used in combination with a gastroscope 2 in an ESD operation, which includes:

[0035] A transparent cap body 1 having a first end 11 connected to the gastroscope 2; and

[0036] A second end 12 opposite to the first end 11; the first end 11 and the second end 12 are connected to each other, wherein the transparent cap body 1 has an axis 13; the axis 13 extends toward the first end 11 and the second end 12;

[0037] The extension section 14 is disposed at the second end 12 ; the extension section 14 extends away from the first end 11 based on the extension direction of the axis 13 of the transparent cap body 1 , wherein after the transparent cap body 1 is connected to the gastroscope 2 , the extension section 14 is located above the lens of the gastroscope 2 .

[0038] refer to Figure 1 and Figure 4 In the present embodiment, the transparent cap body 1 is cylindrical as a whole, and the inner diameter of the transparent cap body 1 is the same as the outer diameter of the front end of the gastroscope 2. When in use, the transparent cap body 1 is plugged into the front end of the gastroscope 2 from the first end 11, and the transparent cap body 1 is inserted into the surgical area through the patient's esophagus with the gastroscope 2 to support, isolate, stabilize and expand the operating space of the mucosal wound surface of the surgical area.

[0039] refer to Figure 1 —2 and Figure 5 Specifically, the inner wall of the transparent cap body 1 is provided with an annular protrusion 15, wherein the center of the annular protrusion 15 coincides with the axis 13, wherein the annular protrusion 15 serves as an alignment line. When in use, the tip of the gastroscope 2 with the first end 11 of the transparent cap body 1 is inserted into the transparent cap body 1 until the tip of the gastroscope 2 abuts against the annular protrusion 15, thereby forming a connection relationship between the transparent cap body 1 and the gastroscope 2.

[0040] Preferably, the inner diameter of the annular protrusion 15 is at most 1 mm larger than the inner diameter of the transparent cap body 1. Under this setting, after the transparent cap body 1 is combined with the gastroscope 2, the annular protrusion 15 will not block the lens of the gastroscope 2, thereby protecting the lens of the gastroscope 2 while ensuring that the surgical field of view is not limited.

[0041] In this embodiment, the transparent cap body 1 is made of a transparent plastic material; for example: polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polystyrene and the like; through this arrangement, it is also used to prevent the transparent cap body 1 from blocking the surgical field of view within the field of view of the gastroscope 2; and it will not affect the divergence of the light of the gastroscope 2 to the surroundings of the surgical area. Alternatively, the transparent cap body 1 can also be made of highly transparent silicone.

[0042] refer to Figure 1 and Figure 3 —4. In this embodiment, the second end 12 of the transparent cap body 1 has an inclined end surface 121, wherein the extension section 14 is arranged on the inclined end surface 121 of the second end 12 at the farthest point from the first end 11; more specifically, the second end 12 of the transparent cap body 1 is wedge-shaped, and in the longitudinal section, the inclined end surface 121 has a far point 122 and a near point 123, wherein the far point 122 is the farthest point from the first end 11, and the near point 123 is the closest point to the first end 11; the extension section 14 is arranged on the inclined end surface 121 of the second end 12 at the farthest point from the first end 11; One end of the extension section 14 is connected to the distal point 122; and after the tip of the gastroscope 2 is inserted into the transparent cap body 1, the extension section 14 and the distal point 122 are located directly above the gastroscope 2 (i.e., the twelve o'clock position of the tip end face of the gastroscope 2). When the gastroscope 2 is close to the mucosal tissue to be peeled off, under this setting, the extension section 14 first contacts the mucosal tissue, and enters into the submucosal space of the mucosal tissue with the operator's operation, thereby lifting the mucosal tissue and exposing the lesion to be peeled off to the surgical field of view.

[0043] refer to Figure 3 —4. More specifically, there must be an angle 124 between the inclined end surface 121 and the axis 13 of the transparent cap body 1; wherein the degree of the angle 124 is between 45° and 90°; the volume of the transparent cap body 1 exposed in the field of view of the gastroscope 2 is reduced, and compared with the traditional cylindrical transparent cap, the field of view of the gastroscope 2 is widened, thereby enabling the operator to better observe the surgical area.

[0044] refer to Figure 4 and Figure 6In other embodiments, the extension section 14 is not provided at the second end 12 of the transparent cap body 1; the transparent cap body 1 as a whole is in the shape of a cylinder with a wedge-shaped end, wherein the distance between the distal point and the proximal point 123 of the second end 12 of the transparent cap body 1 is within 3 to 5 mm; when in use, the surgeon operates the distal point of the transparent cap body 1 to enter from the cutting edge of the mucosal tissue, and then lifts up the mucosal tissue to expose the lesion location; and then uses a surgical electric knife to remove the lesion under the mucosal tissue.

[0045] refer to Figure 1 and Figure 3 —4. In the present embodiment, the extension section 14 has a starting end and an end end, wherein the starting end is connected to the second end 12 of the transparent cap body 1, wherein the extension section 14 is constructed to be at least partially parallel to the axis 13; and at least partially bent in the direction of the axis 13 so that the end end faces the direction of the axis 13; when in use, the extension section 14 is located directly above the gastroscope 2, and the end end of the extension section 14 enters from the cutting edge of the mucosal tissue to under the mucosal tissue, thereby allowing the mucosal tissue to rest on the outer wall of the extension section 14. At this time, the peeled mucosal tissue is picked up by the extension section 14, and the operator can extend the surgical electrosurgical knife through the surgical channel of the gastroscope 2 to peel and remove the lesion area.

[0046] refer to Figure 1 , Figure 4 , Figure 7 More specifically, the extension section 14 includes: a connecting section 141 and an arc section 142; the connecting section 141 is connected to the second end 12 of the transparent cap body 1, the starting end is one end of the connecting section 141, wherein the outer wall of the connecting section 141 and the outer wall of the transparent cap body 1 are tangent to each other, the arc section 142 and the connecting section are integrally connected, and the terminal end is the end of the arc section 142 that is not connected to the connecting section, wherein the outer wall of the arc section 142 and the outer wall of the connecting section 141 are tangent to each other. When in use, the outer wall of the arc section 142 is tangent to the mucosal tissue, and as the operator pushes, the arc section 142 gradually slides into the submucosal space, and then the mucosal tissue gradually rests on the outer wall of the connecting section 141, so as to lift and support the mucosal tissue, thereby exposing the field of view of the surgical area, thereby reducing the probability of bleeding and perforation in the patient during the cutting of the lesion.

[0047] refer to Figure 4More specifically, the thickness of the connecting section 141 is the same as that of the transparent cap body 1, and the connecting section 141 has an arc-shaped outer wall and an arc-shaped inner wall, wherein the curvature of the outer wall is the same as the curvature of the outer wall of the transparent cap body 1; the curvature of the inner wall is the same as the inner wall of the transparent cap body 1, and there is a smooth transition between the outer wall of the connecting end and the outer wall of the transparent cap body 1 and between the inner wall of the connecting end and the inner wall of the transparent cap body 1; at this time, the connecting section 141 and the transparent cap body 1 are in a parallel relationship.

[0048] refer to Figure 4 —5. More specifically, the thickness of the arc segment 142 is the same as that of the connecting end, and the arc segment 142 and the connecting end 141 also present a smooth transition; wherein, the side portions of the connecting end and the arc segment 142 are chamfered; thereby preventing the extension segment 14 from scratching the patient's internal tissues when the transparent cap body 1 enters the patient's body along with the gastroscope 2.

[0049] More specifically, the entire length of the extension section 14 is within a range of 3 to 4 mm, and the material of the extension section 14 is the same as that of the transparent cap body 1 .

[0050] In this embodiment, the starting end of the extension section 14 and the second end 12 of the transparent cap body 1 may be connected by one of the following methods: integral connection or bonding, and integral connection is preferred.

[0051] The use of the utility model:

[0052] 1. Insert the tip of the gastroscope from the first end of the transparent cap body until the tip of the gastroscope rests against the annular protrusion in the transparent cap body;

[0053] 2. The surgeon moves the transparent cap body into the surgical area along with the gastroscope. After the mucosal tissue is peeled off, the surgeon operates the gastroscope to allow the extension section to enter the submucosal space from the cutting edge of the mucosal tissue.

[0054] 3. First, as the surgeon pushes, the arc-shaped section of the extension gradually slides from the cutting edge of the mucosal tissue into the submucosal space, and then the cutting edge of the mucosal tissue is lifted, so that the lesion is exposed to the field of view captured by the gastroscope;

[0055] 4. Continue to push the gastroscope so that the mucosal tissue rests on the connecting section of the extension section, thereby supporting the mucosal tissue so that the lesion area is always exposed to the field of view of the gastroscope during the cutting process.

[0056] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. A transparent cap used in combination with gastroscopy in ESD surgery, characterized in that: It includes: A transparent cap body having a first end connected to the gastroscope; as well as a second end opposite to the first port; The first end and the second end are connected to each other, wherein the transparent cap body has an axis; the axis extends toward the first end and the second end; An extension section is arranged at the second end; the extension section extends away from the first end based on the axial extension direction of the transparent cap body, wherein after the transparent cap body is connected to the gastroscope, the extension section is located above the gastroscope lens.

2. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 1, characterized in that: The extension section has a starting end and an ending end, the starting end is connected to the second end, wherein at least a portion of the extension section is parallel to the axis; and At least a portion of the extension section is bent toward the axial direction so that the terminal end faces the axial direction.

3. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 2, characterized in that: The extension section comprises: A connecting section connected to the second end, wherein the starting end is one end of the connecting section, wherein an outer wall of the connecting section and an outer wall of the transparent cap body are in a tangent relationship with each other; The arc segment is integrally connected to the connecting segment, and the terminal end is an end of the arc segment that is not connected to the connecting segment, wherein the outer wall of the arc segment is tangent to the outer wall of the connecting segment.

4. The transparent cap used in ESD surgery in combination with gastroscopy according to any one of claims 1 to 3, characterized in that: The overall length of the extension section is 3 to 4 mm.

5. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 2, characterized in that: The starting end of the extension section and the second end of the transparent cap body are integrally connected.

6. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 1, characterized in that: The transparent cap body is made of transparent plastic, wherein the extension section is made of the same material as the transparent cap body.

7. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 1, characterized in that: The second end of the transparent cap body has an inclined end surface, wherein the extension section is arranged on the inclined end surface of the second end and is farthest from the first end.

8. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 7, characterized in that: There is an angle between the inclined end surface and the axis, wherein the degree of the angle is between 45° and 90°.

9. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 1, characterized in that: An annular protrusion is arranged on the inner wall of the transparent cap body, wherein the center of the annular protrusion coincides with the axis, and after the transparent cap body is connected to the gastroscope, the front end of the gastroscope abuts against the annular protrusion.

10. The transparent cap used in combination with gastroscopy in ESD surgery according to claim 9, characterized in that: The inner diameter of the annular protrusion is at most 1 mm larger than the inner diameter of the transparent cap body, so that the annular protrusion does not block the field of view of the gastroscope.

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