WO2018082196A1

WO2018082196A1 - Endoscope sleeve cylinder

Info

Publication number: WO2018082196A1
Application number: PCT/CN2017/000504
Authority: WO
Inventors: 李娇; 刘富忠; 李洪谊; 吴玲; 李爽; 王耀涓
Original assignee: 沈阳尚贤微创医疗器械股份有限公司
Priority date: 2016-11-03
Filing date: 2017-08-07
Publication date: 2018-05-11
Also published as: CN106343941B; CN106343941A

Abstract

An endoscope sleeve cylinder, used for being sleeved at the front extremity of an endoscope (1), provided with a cylindrical body (2) and several protruding components (3) provided on the cylindrical body (2). Several connecting holes (23) are provided on the cylindrical wall of the cylindrical body (2). The protruding components (3) are provided with first protruding parts (31) extending to the inside of the cylindrical body (2) and second protruding parts (32) extending to the outside of the cylindrical body (2). Connections (33) of the first protruding parts (31) and the second protruding parts (32) are pivotally connected or attached to the cylindrical wall via the connecting holes (23). The protruding components (3) rotate, with the connections (33) as axes, around same in the range of 0° to 180°. The first protruding parts (31) interact with an outer wall (13) of the endoscope. The angles, α, between the first protruding parts (31) and the second protruding parts (32) are 90° to 270°. The angles, β, between the second protruding parts (32) and the central axis line is 25° to 155°. The sleeve provides the advantageous condition of minimal resistance or no resistance for the endoscope entering the body cavity, and provides the endoscope with broadened and clear vision when exiting a body cavity check, thus implementing the goal of painlessness for a patient and increased accuracy of checks.

Description

Endoscope sleeve

Technical field

The invention belongs to the field of medical machinery, and in particular relates to an endoscope sleeve.

Background technique

In endoscopy/surgery, a flexible instrument is inserted along the body cavity into the body such as the stomach, duodenum, small intestine or large intestine. The instrument is equipped with a fiber optic or charge coupled device (CCD) camera to enable the image to Display around the bend and be able to generate images on the screen. For example, colonoscopy and enteroscopy are used to assess the health of the intestines. Because the intestine is long and curled, the inner layer of the colon is a wrinkled structure, so there are often great difficulties in microscopic examination. For example, when the end of the endoscope enters the colonic intestine, these wrinkles can prevent medical personnel from observing the mucosal surface of the intestinal wall. In particular, precancerous lesions and malignant lesions hidden in the folds; often there are cases where feces and fluid residues are hidden in the colon wall, preventing proper examination of colon tissue.

In order to overcome the problems faced by microscopy, various efforts have been made, such as colonoscopy using a double balloon, as is known in the prior art. However, a double balloon enteroscopy requires a large number of additional kits, and the operator is controlling the order of the balloons. High skill in inflation and deflation, it is also a long-term operation, sometimes it takes several hours, and there is a problem of "slip" in the intestinal wall, which cannot be used for biopsy or treatment. PCT/GB2011/050981 discloses a covering for a medical endoscopic instrument having a plurality of movable, externally inclined protruding elements, the covering comprising an elongated tubular member sleeved on the endoscope The outer surface of the tubular member is provided with spaced apart protruding elements, each protruding element having a distal end and a base, the protruding element being rotatable about its base, the protruding element being fanned out to fit within the body passageway into which the medical endoscopic instrument has been inserted The lumen wall contacts and provides support to the lumen wall and enlarges the lumen wall. However, in the stage of the mirror retreat, the product has insufficient plucking force on the intestine wall. When the examination, the supporting intestinal wall force is insufficient, there is no way to effectively enlarge the visual field, and the friction with the intestinal wall is too small, and it is easy to slip. In actual use, since the tubular member is too soft, a sleeve is required to be added to the outer surface of the tubular member as the outer wall support, but the outer wall is often hard, which may cause damage to human tissues, and the manufacturing process is complicated and high in cost. PCT/US2013/044407 discloses an endoscope sleeve comprising a tubular member with spaced apart projecting elements extending from the tubular member. The protruding elements are bendable in both the proximal and distal directions towards the tubular member. The force (insertion force) required to bend the projecting member in the proximal direction is smaller than the force (pullout force) required to bend the projecting member in the distal direction. The outer circumference of the projecting member decreases as the pull-out force increases. The shortcoming of this product is that it enters the large intestine stage, the resistance is very large, the patient is very painful; because the outer diameter is too large, it is very difficult to enter the ileocecal valve, there is no way to screen the lesion at the ileocecal valve, and it is easy to miss the lesion. The product is very heavy and delays the cornering of the endoscope lens.

Summary of the invention

The object of the present invention is to disclose an endoscope sleeve having a cylindrical body and a plurality of protruding elements disposed on the cylindrical body By improving the structure of the cylindrical body and the protruding element, when assembled with the endoscope, the effect of the outer wall of the endoscope is effectively utilized, so that the endoscope and the sleeve enter the human body with little resistance, and the patient has no pain. The first protrusion of the protruding element interacts with the endoscope mirror wall during the retreat inspection, so that the second protrusion of the protruding element has sufficient supporting force to support the cavity wall of the human body/organ/tissue cavity , to create a large enough space for the front end of the endoscope, so that the endoscope field of view is more clear, effectively improving the accuracy of the microscopic examination.

The technical solution adopted by the invention is:

The endoscope sleeve is sleeved on the front end of the endoscope, has a cylindrical body and a plurality of protruding elements disposed on the cylindrical body, and the cylindrical body has a plurality of connecting holes on the wall of the barrel The protruding element has a first protrusion extending toward the inside of the cylindrical body and a second protrusion extending toward the outside of the cylindrical body, and the connection of the first protrusion and the second protrusion is hinged or attached through the connection hole On the wall of the cylinder, the protruding element rotates about 0 to 180 degrees with the joint as an axis; the first protrusion interacts with the outer wall of the endoscope; the first protrusion and the second The angle α of the protruding portion is 90° to 270°, and the angle β between the second protruding portion and the central axis is 25° to 155°.

The endoscope sleeve, when the protruding element is at a position of 0°, the end of the second protrusion extending toward the outside of the cylindrical body is directed to the rear end of the endoscope; when the protruding element is at the 90° position, the second The protrusion is perpendicular to the central axis of the sleeve; when the protruding element is at a position inclined to 180°, the end of the second protrusion extending toward the outside of the cylindrical body is directed toward the front end of the endoscope.

The endoscope sleeve, the first protruding portion and the second protruding portion form a corner-like structure, the angle between the first protruding portion and the second protruding portion α is 120 ° ~ 130 °;

In the endoscope sleeve, when the sleeve is in a normal state, that is, the sleeve is not sleeved on the endoscope, the angle β between the second protrusion and the central axis of the sleeve is 90°.

In the endoscope sleeve, the first protrusion has a first corner side wall that interacts with the outer wall of the endoscope and a second corner side wall that is opposite to the first corner side wall; when the sleeve is sleeved In the endoscope, when the outer wall of the endoscope acts on the side wall of the first corner, the protruding element is rotated, and the end of the second protruding portion extending toward the outside of the cylindrical body is directed to the rear end of the endoscope; that is, the second protruding portion and the sleeve The angle β of the central axis is 0° to 85°.

In the endoscope sleeve, when the sleeve is sleeved on the endoscope, when the outer wall of the endoscope acts on the first corner side wall, the protruding element is rotated, and the second protrusion extends toward the outside of the cylindrical body. Pointing to the rear end of the endoscope, that is, the angle β between the second protrusion and the central axis of the sleeve is 5° to 85°, and the second corner side wall and the outer wall of the cylindrical body tend to be in the same curved surface.

In the endoscope sleeve, a plurality of connecting holes are circumferentially spaced along the wall of the cylindrical body; the connecting holes are arranged on the wall of the tube in a plurality of connecting holes in a multi-layer shape along the circumference of the tube wall Evenly arranged, or a plurality of connecting holes are uniformly arranged in a single floor shape along the circumference of the cylinder wall.

The endoscope sleeve is provided with a rib between two adjacent connecting holes on the inner wall of the cylindrical body, and the rib is disposed in parallel with the central axis of the sleeve.

The endoscope sleeve is further provided with a plurality of protrusions or depressions on the end wall of the end of the second protrusion extending toward the outside of the cylindrical body.

In the endoscope sleeve, the opening of the cylindrical body at the front end of the endoscope is arranged in an arc-shaped closing structure such that the opening closely fits the outer wall of the front end of the endoscope.

The invention has the following beneficial effects:

With the endoscope sleeve of the present invention, the resistance to the body/organ/tissue (e.g., large intestine) cavity is small, and the patient has no pain. In the retrospective examination stage, since the protruding element of the present invention employs the first protrusion and the second protrusion, the first protrusion interacts with the outer wall of the endoscope, so that the second protrusion has sufficient supporting force to support the body/organ/tissue The cavity wall of the cavity (for example, the intestinal wall) forms a sufficiently large space for the front end of the endoscope to make the endoscope field of view clearer; the end of the second protrusion extending to the outside of the cylindrical body is further provided with a convex structure or a concave structure. It can increase the friction with the body/organ/tissue cavity wall (for example, the intestinal wall), so that the sleeve of the present invention can easily pluck the wrinkles of the body/organ/tissue cavity wall (for example, the intestinal wall) like a finger. Clearer and clearer to show the lesions in the field of medical staff;

By providing a rib between two adjacent connecting holes on the inner wall of the cylindrical body, the rib is arranged parallel to the central axis of the sleeve, on the one hand, the hardness of the cylindrical body wall is increased, and on the other hand, when the sleeve is inside After the speculum is assembled, a recess can be formed between the two ribs on the outer wall of the cylindrical body. When entering the human body, the second protrusion of the protruding element can be trapped in the recess, thereby effectively reducing the overall sleeve. The outer diameter reduces the resistance and achieves excellent results without pain for the patient.

The sleeve of the present invention has a soft structure as a whole and is harmless to human body/organs/tissue.

DRAWINGS

1 is an isometric view of an endoscope sleeve of an embodiment.

Figure 2 is a front elevational view of the endoscope sleeve of Figure 1.

3 is a top plan view of the endoscope sleeve of FIG. 1.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 4.1 is a partial enlarged view of Figure 4.

Figure 5 is a schematic illustration of an endoscope and the endoscope sleeve of Figure 1.

Figure 6 is a schematic view of the endoscope and the endoscope sleeve of Figure 1 assembled.

Figure 7 is a cross-sectional view of the endoscope sleeve of Figure 6 assembled.

FIG. 8 is a schematic view showing the stage of the endoscope sleeve of FIG. 6 after being assembled into a cavity.

FIG. 9 is a schematic view showing the stage of the mirror retreat from the cavity after the endoscope sleeve of FIG. 6 is assembled.

Figure 10 is a different arrangement of the protruding elements in the outer wall of the cylindrical body.

Figure 11 is a different arrangement of the protruding elements in the outer wall of the cylindrical body.

Fig. 12 shows that the angle α between the first projection and the second projection is 217°.

Among them, 1-endoscope, 11-endoscope end, 12-endoscope front end, 13-endoscope outer wall, 2-tube body, 21-tube outer wall, 22-tube body wall, 23-connection hole, 24-rib, 25-curved cuff structure, 3-protrusion element, 31-first protrusion, 32-second protrusion, 33-joint, 34-first corner side wall, 35-second corner side wall, 36-end of the second protrusion extending to the outside of the cylindrical body, 37-protrusion, 4-sleeve center axis, 5-body/organ/tissue cavity

detailed description

The endoscope sleeve of the present invention will now be specifically described with reference to the accompanying drawings and embodiments, but is not limited thereto. The endoscope sleeve of Figures 1-11 is used to be sleeved on the front end 12 of the endoscope. The sleeve is entirely of a soft structure, using a polymer, an elastomer, or the like that is harmless to the human body/organs/tissue. Rubber, such as polyurethane, natural rubber, silicone and silicone elastomers, which are preferably transparent, are capable of supporting not only the body/organs/tissue but also visualization.

The endoscope sleeve has a cylindrical body 2 and a plurality of protruding elements 3 disposed on the cylindrical body 2. The cylindrical body 2 has a plurality of connecting holes 23 formed therein, and the protruding elements 3 have a cylindrical body 2 The first protruding portion 31 extending inside and the second protruding portion 32 extending to the outside of the cylindrical body 2 may be in the shape of a wedge, a strip, a bar, a fan, a fin, or the like.

The protruding member 3 passes through the cylindrical wall of the cylindrical body 2 through the connecting hole 33, and the joint 33 of the first protruding portion 31 and the second protruding portion 32 is hinged or attached to the cylindrical wall of the cylindrical body 2 in the connecting hole 23. The protruding member 3 is rotatable about 0 to 180° with the joint 33 as an axis; the first protrusion 31 interacts with the outer wall of the endoscope; the first protrusion 31 of the protruding element 3 and The angle α between the second protrusions 32 is 90° to 270°. FIG. 12 shows a case where the angle α between the first protrusion 31 and the second protrusion 32 is 217°.

Preferably, the first protruding portion 31 and the second protruding portion 32 form an angular structure, and the angle α between the first protruding portion 31 and the second protruding portion 32 is 120° to 130°, and more preferably α is 125°. Figure 4.1 shows;

The angle β between the second projection 32 and the central axis of the sleeve is 25° to 155°, and the preferred angle β is 90°. When the sleeve is assembled with the endoscope, the first protrusion 31 interacts with the endoscope outer wall 13; when the protruding element 3 is in the 0° position, the second protrusion points inward toward the end 36 extending outside the cylindrical body The rear end 11 of the speculum; when the protruding element 3 is in the 90° position, the second protrusion 32 is perpendicular to the sleeve center axis 4; when the protruding element 3 is in the 180° position, the second protrusion extends outside the cylindrical body The end 36 is directed toward the front end 12 of the endoscope. The end portion of the end 36 of the second protrusion extending to the outside of the cylindrical body is further provided with a plurality of protrusions 37 or depressions for increasing the friction between the second protrusion and the body/organ/tissue wall (referred to as the wall) The protrusion 37 has a shape of a bump, a rib or a ridge, and the concave shape is a pit, a groove or a concave. Tube The opening of the body 2 at the front end 12 of the endoscope is provided in an arcuate cuff structure 25 such that the opening closely fits the outer wall of the front end 12 of the endoscope.

The first protrusion 31 has a first corner side wall 31 that interacts with the endoscope outer wall 13 and a second corner side wall 35 that opposes the first corner side wall 31. When the sleeve is sleeved on the endoscope 1, the endoscope outer wall 13 acts on the first corner side wall 34, causing the protruding element 3 to rotate, and the second protrusion points toward the end 36 extending outside the cylindrical body to point to the endoscope The rear end 11, that is, the angle β between the second protrusion 32 and the central axis 4 of the sleeve is 0° to 85°; preferably 5° to 85°, and the second corner side wall 35 and the cylindrical outer wall 21 tend to be the same. Inside the surface.

When the sleeve is not sleeved on the endoscope 1, the angle β between the second protrusion 32 and the central axis 4 of the sleeve may be 25° to 155°, and the preferred angle β is 90°.

As shown in FIGS. 1, 10 and 11, a plurality of connecting holes 23 are circumferentially spaced along the wall of the cylindrical body 1; the connecting holes are arranged on the wall of the cylinder in such a manner that the plurality of connecting holes 23 have a multi-layered edge. The circumferential direction of the cylinder wall is uniformly arranged as shown in Figs. 10 and 11, or a plurality of connecting holes 23 are uniformly arranged in a single floor shape along the circumferential direction of the cylinder wall. A rib 24 is disposed between the adjacent two unit connecting holes 23 on the inner wall 22 of the cylindrical body, and the rib 24 is disposed in parallel with the central axis 4 of the sleeve. A plurality of connecting holes 23 may also be arranged in a staggered manner along the circumference of the barrel wall.

An example of an endoscope sleeve as shown in FIGS. 1-5, having a cylindrical body 2 and a plurality of protruding members 3 disposed on the cylindrical body 2, the first protruding portion 31 and the second protruding portion of the protruding member 3 The angle α of the portion 32 is 125°, and the angle β between the second protrusion 32 and the central axis of the sleeve is 90°. When the sleeve is assembled with the endoscope as shown in FIG. 6 , the first protrusion 31 and the endoscope The outer mirror wall 13 interacts such that the protruding element 3 rotates, and the distal end 36 of the second projection extending toward the outside of the cylindrical body is directed toward the rear end 11 of the endoscope, that is, the angle β between the second projection 32 and the central axis 4 of the sleeve is 50° to 60°; the second corner side wall 35 and the cylindrical outer wall 21 tend to be in the same curved surface. As shown in FIG. 8, when the assembled endoscope sleeve enters the inner stage of the body/organ/tissue chamber 5, the second protrusion 32 in the protruding element 3 is in a smooth shape and is The soft material, the end 36 of the second protrusion 32 extending toward the outside of the cylindrical body is directed to the rear end of the endoscope, so that the second protrusion 32 has a tendency to fit the outer wall of the cylindrical body, such as a smaller body/organ / Tissue cavity 5 cavity diameter, the second protrusion 32 can be trapped in the recess formed by the rib 24, so that the outer diameter of the endoscope sleeve can be minimized, thereby reducing the resistance, and realizing the patient without pain. As shown in Figure 9, when the assembled endoscope sleeve is withdrawn from the body/organ/tissue chamber 5, the second projection 32 of the protruding element 3 is open under the action of the lumen wall. At the same time, the first protrusion 31 interacts with the outer wall of the endoscope, so that the second protrusion 32 has sufficient supporting force to support the wall of the body/organ/tissue cavity, and a sufficient space is formed for the front end of the endoscope. Make the endoscope field clearer.

Claims

The endoscope sleeve is sleeved on the front end of the endoscope, and has a cylindrical body and a plurality of protruding elements disposed on the cylindrical body, wherein the cylindrical body has a plurality of barrel walls a connecting hole, the protruding element having a first protrusion extending toward the inside of the cylindrical body and a second protrusion extending to the outside of the cylindrical body, the connection of the first protrusion and the second protrusion being hinged through the connection hole Or attached to the wall of the barrel, the protruding element rotating about 0 to 180° with the joint as the axis; the first protrusion interacting with the outer wall of the endoscope; the first protrusion The angle α between the portion and the second protrusion is 90° to 270°, and the angle β between the second protrusion and the center axis is 25° to 155°.
The endoscope sleeve according to claim 1, wherein when the protruding member is in the 0° position, the end of the second projection extending toward the outside of the cylindrical body is directed toward the rear end of the endoscope; In the 90° position, the second protrusion is perpendicular to the sleeve center axis; when the protruding element is in the 180° position, the second protrusion extends toward the outside of the barrel body toward the front end of the endoscope.
The endoscope sleeve according to claim 1, wherein the first protrusion and the second protrusion form an angular structure, and an angle α between the first protrusion and the second protrusion is 120°. 130°;
The endoscope sleeve according to claim 1, wherein when the sleeve is in a normal state, that is, the sleeve is not sleeved on the endoscope, the second projection is clamped to the central axis of the sleeve The angle β is 90°.
The endoscope sleeve according to claim 1, wherein said first projection has a first corner side wall that interacts with an outer wall of the endoscope and a second corner side opposite said first corner side wall a wall; when the sleeve is sleeved on the endoscope, the outer wall of the endoscope acts on the first corner side wall, so that the protruding element rotates, and the end of the second protrusion extending toward the outside of the cylindrical body points toward the rear end of the endoscope; That is, the angle β between the second protrusion and the central axis of the sleeve is 0° to 85°.
The endoscope sleeve according to claim 5, wherein when the sleeve is sleeved on the endoscope, the outer wall of the endoscope acts on the first corner side wall to cause the protruding member to rotate, and the second protrusion The end extending toward the outside of the cylindrical body is directed to the rear end of the endoscope, that is, the angle β between the second protrusion and the central axis of the sleeve is 5° to 85°, and the second corner side wall tends to be the same as the outer wall of the cylindrical body. Inside the surface.
The endoscope sleeve according to claim 1, wherein a plurality of connecting holes are circumferentially spaced along the wall of the cylindrical body; and the connecting holes are arranged on the wall of the tube in a plurality of connecting holes. The multi-floor shape is evenly arranged along the circumferential direction of the cylinder wall, or a plurality of connection holes are uniformly arranged in a single floor shape along the circumferential direction of the cylinder wall.
The endoscope sleeve according to claim 7, wherein a convex rib is disposed between the adjacent two connecting holes on the inner wall of the cylindrical body, and the rib is disposed in parallel with the central axis of the sleeve.
The endoscope sleeve according to claim 1, wherein a plurality of projections or depressions are further provided on the end wall of the distal end of the second projection extending toward the outside of the cylindrical body.
The endoscope sleeve according to claim 1, wherein the opening of the cylindrical body at the front end of the endoscope is provided in an arc-shaped closing structure such that the opening closely fits the outer wall of the front end of the endoscope. .