Transparent cap of preassembled super-visual-field loop ligature device and preassembled super-visual-field loop ligature device

Abstract

The invention provides a transparent cap of a preassembled super-visual-field loop ligature device and the preassembled super-visual-field loop ligature device, and relates to the technical field of medical instruments. The transparent cap of the preassembled super-visual-field loop ligature device is provided with an inserting pipe cavity extending from the near end to the far end, and a loop installing area located on the outer side of the inserting pipe cavity. In the state that the lens end of the endoscope is inserted into the insertion pipe cavity, the at least two binding rings installed in the ferrule installation area are located outside the view field of the endoscope, the situation that the view field of the endoscope is blocked by the binding rings is reduced, it is ensured that the endoscope can obtain more comprehensive image information, and surgical operation is better facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a preloaded super-vision ligation device transparent cap and a preloaded super-vision ligation device. BACKGROUND

[0002] The traditional ligation device needs to be assembled on site by the operator before use. This process not only consumes a lot of surgical preparation time, but also in an emergency or high-intensity clinical environment, the operation failure can lead to poor device assembly, and further cause device function abnormalities, and even cause medical risks. In order to improve the operation efficiency, the traditional ligation device needs to be assembled on site by medical staff (nurses) before use. First, the special lead wire of the ligation device is inserted through the channel of the endoscope, and the pull rope of the loop assembly is hooked at the distal end of the endoscope. The pull rope is pulled out of the proximal end of the endoscope, and the handle assembly is assembled. The loop assembly is then installed at the distal end of the endoscope. After the assembly is completed, the physician needs to check the normal negative pressure effect before use. This process usually takes 5 minutes, which not only prolongs the surgical preparation time, but also in an emergency or high-intensity clinical operation, the human assembly failure can lead to device performance abnormalities, and even cause potential medical risks. In order to optimize and improve the operation efficiency, the existing method of installing the pull rope through the endoscope channel on site by the doctor is improved to the method of installing the pull rope outside the spring tube by the manufacturer in advance. It is not necessary for the doctor to install it on site. The manufacturer pre-installs it, checks various performances in advance, including loop release performance, system negative pressure function, and endoscope matching function, to avoid risks caused by doctor's misoperation.

[0003] The existing traditional technology adopts the design of pre-installing multiple ligation loops. The ligation loops can be released one by one during the operation, thereby effectively shortening the operation time. However, in this structure, multiple ligation loops are arranged in sequence along the axial direction, which can easily block the endoscope view and limit the image acquisition range. In the case of limited visualization conditions, it can increase the difficulty and uncertainty of the operation. SUMMARY

[0004] The present application aims to provide a preloaded super-vision ligation device transparent cap and a preloaded super-vision ligation device to solve the technical problem of prolonged operation time caused by the need for doctors to install the ligation device on site, and to alleviate the technical problem of blocking the endoscope view range in the transparent cap by the ligation loop in the prior art.

[0005] In a first aspect, the present application provides a preloaded super-vision ligation device transparent cap, which has a plug-in tube cavity extending from the proximal end to the distal end, and a loop installation area located outside the plug-in tube cavity. In the state that the lens end of the endoscope is inserted into the plug-in tube cavity, at least two ligation loops installed in the loop installation area are located outside the view range of the endoscope.

[0006] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the inner side of the transparent cap of the pre-installed ultra-field ligator is provided with an endoscope limiting part; With the endoscope lens inserted into the insertion tube, the endoscope lens abuts against the endoscope limiting part.

[0007] In conjunction with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the proximal end of the outer side wall of the pre-installed ultra-field ligator transparent cap has an outwardly protruding connector portion. The proximal end of the ring mounting area extends to the joint portion.

[0008] In conjunction with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the inner wall of the transparent cap of the pre-installed ultra-field ligator is provided with a pull groove communicating with the connector portion.

[0009] In conjunction with the second possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the distal end of the transparent cap of the pre-installed ultra-field ligator is provided with a release part; The outer wall of the release section slopes inward from the proximal end to the distal end.

[0010] In conjunction with the fourth possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein, with the endoscope lens end inserted into the insertion lumen, the axis of the endoscope coincides with the axis of the release portion, or, the axis of the insertion lumen is located between the axis of the distal opening of the release portion and the connector portion.

[0011] In conjunction with the fifth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the outer diameter of the release portion decreases from the proximal end to the distal end.

[0012] In conjunction with the fifth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the release portion includes: a first cone portion and a second cone portion, the first cone portion and the second cone portion being disposed opposite to each other along the circumferential direction of the release portion; The taper of the first cone is greater than the taper of the second cone.

[0013] In conjunction with the fifth possible implementation of the first aspect, the present invention provides an eighth possible implementation of the first aspect, wherein the proximal end of the transparent cap of the pre-installed ultra-field ligator is connected to an elastic tube for fitting the endoscope. The axis of the elastic tube is located between the axis of the distal opening of the release part and the connector part.

[0014] In a second aspect, the pre-installed ultra-field ligator provided by the present invention includes the pre-installed ultra-field ligator transparent cap described in the first aspect, as well as a release control member, a release transmission member, and a plurality of the ligating rings. Several of the described ligatures are located in the ligature installation area and are sequentially fitted onto the transparent cap of the pre-installed ultra-field ligature along the axial direction; Each of the aforementioned ligatures is connected to the release control component via the release transmission component.

[0015] The embodiments of the present invention bring the following beneficial effects: the pre-loaded ultra-field ligator transparent cap has an insertion lumen extending from the proximal end to the distal end, and a loop mounting area located outside the insertion lumen. When the endoscope lens is inserted into the insertion lumen, at least two ligatures installed in the loop mounting area are outside the endoscope's field of vision, reducing the obstruction of the endoscope's field of vision by the ligatures, ensuring that the endoscope can obtain more comprehensive image information, which is more conducive to surgical operation.

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of the transparent cap and elastic tube of the pre-installed ultra-field ligator provided in an embodiment of the present invention; Figure 2 A cross-sectional view of the transparent cap, ligating ring, and elastic tube of the pre-installed ultra-field ligator provided in an embodiment of the present invention; Figure 3 A schematic diagram of the transparent cap and elastic tube of the pre-installed ultra-field ligation device provided in an embodiment of the present invention; Figure 4 A cross-sectional view of the pre-installed ultra-field ligator transparent cap, ligation ring, elastic tube, and endoscope provided in an embodiment of the present invention; Figure 5 A schematic diagram of the pre-installed ultra-field ligation device and endoscope provided in an embodiment of the present invention; Figure 6 This is a partially enlarged schematic diagram of the pre-installed ultra-field ligation device provided in an embodiment of the present invention.

[0019] Icons: 100-Pre-installed ultra-wide field ligator transparent cap; 101-Insertion lumen; 102-Loop installation area; 103-Endoscope limiting part; 104-Connector part; 105-Pull groove; 106-Release part; 161-First cone part; 162-Second cone part; 200-Loop ring; 300-Elastic tube; 400-Endoscope; 500-Release control element; 600-Release transmission element; 601-Conduit; 602-Pull wire; 603-Release line; 604-Release protrusion. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used only to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities in the International System of Units (SI), or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration. "Proximal end" and "farthest end" are relative to the operator; the end closer to the operator is the proximal end, and the end farther from the operator is the farthest end.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. The terms "proximal end" and "distal end" are used with reference to the product operator. The proximal end is the end located outside the body and can be held by hand, while the distal end is the end that can be implanted in the patient's body and is away from the operator. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, the pre-installed ultra-field ligator transparent cap provided in this embodiment of the invention has an insertion lumen 101 extending from the proximal end to the distal end, and a ligature mounting area 102 located outside the insertion lumen 101; when the lens end of the endoscope 400 is inserted into the insertion lumen 101, at least two ligatures 200 installed in the ligature mounting area 102 are located outside the field of view of the endoscope 400.

[0024] In a preferred embodiment, all the multiple ligatures 200 installed in the ligature installation area 102 are located outside the field of view of the endoscope 400. As an optional embodiment, for a transparent cap pre-installed with six ligatures 200, at least four ligatures 200 in the ligature installation area 102 are located outside the field of view of the endoscope 400; for a transparent cap pre-installed with seven ligatures 200, at least five ligatures 200 in the ligature installation area 102 are located outside the field of view of the endoscope 400; and for a transparent cap pre-installed with ten ligatures 200, at least eight ligatures 200 in the ligature installation area 102 are located outside the field of view of the endoscope 400, thereby reducing the obstruction of the endoscope 400's field of view by the ligatures 200.

[0025] By using the pre-installed ultra-field ligator transparent cap described in this embodiment, the lens end (distal end) of the endoscope 400 can extend to the inside of several ligation rings 200, so that the several ligation rings 200 are all outside the field of view of the endoscope 400, thus avoiding the ligation rings 200 from obstructing the field of view of the endoscope 400.

[0026] In this embodiment of the invention, the inner side of the transparent cap 100 of the pre-installed ultra-field ligator is provided with an endoscope limiting part 103; when the lens end of the endoscope 400 is inserted into the insertion tube 101, the lens end (distal end) of the endoscope 400 abuts against the endoscope limiting part 103, thereby achieving axial limiting of the endoscope 400 relative to the transparent cap 100 of the pre-installed ultra-field ligator.

[0027] With the lens end (distal end) of the endoscope 400 abutting against the endoscope limiting part 103, the distal end of the loop mounting area 102 can extend a small distance distally relative to the endoscope 400, so that part of the loop 200 installed in the loop mounting area 102 exceeds the axial range of the endoscope 400, but still does not enter the field of view of the endoscope 400.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the proximal end of the outer wall of the pre-installed ultra-field ligator transparent cap 100 has an outwardly protruding connector 104; the proximal end of the ligature installation area 102 extends to the connector 104. A release transmission component 600 can be connected to the connector 104. The release transmission component 600 uses a pull wire, transmission rod, or other devices to pass through the connector 104 into the inner side of the pre-installed ultra-field ligator transparent cap 100 and connect to a flexible pull wire. The flexible pull wire extends to the distal end of the pre-installed ultra-field ligator transparent cap 100, and then folds back proximally from the outside of the pre-installed ultra-field ligator transparent cap 100, thereby achieving a sequential transmission connection between the flexible pull wire and several ligature rings 200. Furthermore, the outwardly protruding connector 104 serves as a proximal endoscopic limiting part of the ligature installation area 102, thereby ensuring the accurate installation position of the ligature rings 200 so that the release transmission component 600 can be driven and accurately release the ligature rings 200.

[0029] Furthermore, the inner wall of the pre-installed ultra-wide field bandage transparent cap 100 is provided with a pull groove 105 that communicates with the connector 104.

[0030] The pull groove 105 is connected to the connector 104 at its proximal end, and extends to the distal end. The pull groove 105 provides space for the release transmission component 600, so as to prevent the release transmission component 600, which extends into the transparent cap 100 of the pre-installed ultra-field ligator, from being squeezed by the endoscope 400 and becoming stuck.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the pre-installed over-the-horizontal ligator transparent cap 100 has a release section 106 at its distal end; the outer wall of the release section 106 slopes inward from the proximal end to the distal end. At the release section 106, the radial dimension of the outer wall decreases from the proximal end to the distal end, making it easier for the ligator 200, which slides from the ligator mounting area 102 to the release section 106, to slide distally and detach more easily. This reduces the operational force required to release the ligator 200 and lowers the operational difficulty of releasing the ligator 200.

[0032] In one alternative embodiment, with the lens end of the endoscope 400 inserted into the insertion lumen 101, the axis of the endoscope 400 coincides with the axis of the release part 106.

[0033] In another alternative embodiment, with the lens end of the endoscope 400 inserted into the insertion lumen 101, the axis of the insertion lumen 101 lies between the axis of the distal opening of the release portion 106 and the connector portion 104. See also Figure 2 , Figure 4 and Figure 6The axis of the release part 106 is lower than the axis of the insertion cavity 101. A certain space is reserved inside the side of the insertion cavity 101 where the connector part 104 is provided, so that the release line 603 can extend from the release part 106 through the space into the connector part 104.

[0034] In an optional embodiment, the outer diameter of the release portion 106 decreases from the proximal end to the distal end. The release portion 106 can be configured as a conical structure, thereby causing its outer diameter to decrease from the proximal end to the distal end.

[0035] In an optional implementation, see Figure 1 and Figure 4 The release section 106 includes a first cone portion 161 and a second cone portion 162, which are arranged opposite to each other along the circumference of the release section 106. The taper of the first cone portion 161 is greater than that of the second cone portion 162. The first cone portion 161 and the connector portion 104 are located on the same side of the circumferential direction of the transparent cap 100 of the pre-installed ultra-wide field ligator. The greater taper of the first cone portion 161 ensures that the ligation ring 200 can be smoothly released distally along the release section 106 while minimizing the reduction in the size of the distal opening of the release section 106, thus ensuring that the endoscope 400 has a sufficient field of view.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the proximal end of the transparent cap 100 of the pre-installed ultra-field ligator is connected to an elastic tube 300 for fitting the endoscope 400; the axis of the elastic tube 300 is located between the axis of the opening at the distal end of the release part 106 and the connector part 104. The endoscope 400 is inserted into the elastic tube 300, ensuring that the endoscope 400 and the elastic tube 300 are coaxial. The opening at the distal end of the release part 106 is deflected away from the connector part 104 relative to the endoscope 400, thereby facilitating the provision of space for the position of the connector part 104 on the inner side of the insertion lumen 101. This ensures that the release line 603 can extend from the connector part 104 through the gap between the endoscope 400 and the inner wall of the insertion lumen 101 to the connector part 104 without increasing the diameter of the insertion lumen 101.

[0037] The opening at the distal end of the release section 106 ensures that the endoscope 400 can obtain a clear image and reduces the obstruction of the endoscope 400 by the release section 106.

[0038] like Figure 5 and Figure 6As shown, the pre-installed ultra-field ligation device provided in this embodiment of the invention includes the pre-installed ultra-field ligation device transparent cap 100 described in the above embodiments, as well as a release control member 500, a release transmission member 600, and a plurality of ligation rings 200; the plurality of ligation rings 200 are located in the ligation ring installation area 102 and are sequentially sleeved on the pre-installed ultra-field ligation device transparent cap 100 along the axial direction; the plurality of ligation rings 200 are connected to the release control member 500 one by one via the release transmission member 600.

[0039] In this embodiment of the invention, the release transmission component 600 includes a conduit 601, a pull wire 602, a release line 603, and a release protrusion 604. The proximal end of the conduit 601 is connected to the release control component 500, and the distal end of the conduit 601 is connected to the connector 104. The proximal end of the pull wire 602 is connected to the release control component 500, and the pull wire 602 passes through the conduit 601 and is connected to the release line 603. The release line 603 extends distally from inside the pre-installed ultra-field ligator transparent cap 100, and folds back outward from the distal end of the pre-installed ultra-field ligator transparent cap 100. The release line 603 located outside the pre-installed ultra-field ligator transparent cap 100 extends proximally from the distal end and is inserted into the inner side of several ligating rings 200. Multiple release protrusions 604 are connected to the release line 603, and the proximal end of each ligating ring 200 abuts against at least one release protrusion 604. When the release control 500 pulls the pull line 602, the pull line 602 pulls the release protrusion 604 located on the outside of the pre-installed ultra-field ligator transparent cap 100 to move to the distal end, thereby releasing the ligation ring 200 located at the distal end of the release protrusion 604 from the pre-installed ultra-field ligator transparent cap 100. Subsequently, the release protrusion 604 enters the inside of the pre-installed ultra-field ligator transparent cap 100 along with the release line 603. If the pull line 602 is pulled again, the next segment of the release line 603 located outside the pre-installed ultra-field ligator transparent cap 100 will drive the next release protrusion 604 to move. In this way, the ligation rings 200 can be released one by one. In an optional embodiment, the pull wire 602 can be connected to multiple release wires 603, each release wire 603 is connected to multiple release protrusions 604, and the multiple release protrusions 604 corresponding to the same ligature 200 are arranged at intervals along the circumference of the pre-installed ultra-field ligature transparent cap 100. When the ligature 200 is released, the multiple release protrusions 604 together push the ligature 200 to the distal end, thereby ensuring that the ligature 200 can be released smoothly.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-installed transparent cap for an ultra-wide field ligation device, characterized in that, The pre-installed ultra-field ligator transparent cap (100) has an insertion lumen (101) extending from the proximal end to the distal end, and a ligature mounting area (102) located outside the insertion lumen (101). With the lens end of the endoscope (400) inserted into the insertion lumen (101), at least two ligatures (200) installed in the ligature mounting area (102) are located outside the field of view of the endoscope (400).

2. The pre-installed ultra-wide field ligation transparent cap according to claim 1, characterized in that, The inner side of the transparent cap (100) of the pre-installed ultra-field ligation device is provided with an endoscope limiting part (103). With the lens end of the endoscope (400) inserted into the insertion lumen (101), the lens end of the endoscope (400) abuts against the endoscope limiting part (103).

3. The pre-installed ultra-wide field ligation transparent cap according to claim 1, characterized in that, The pre-installed ultra-field ligature transparent cap (100) has an outwardly protruding connector (104) on the proximal end of the outer side wall. The proximal end of the ring mounting area (102) extends to the joint portion (104).

4. The pre-installed ultra-wide field ligation transparent cap according to claim 3, characterized in that, The inner wall of the pre-installed ultra-field bandage transparent cap (100) is provided with a pull wire groove (105) that communicates with the connector (104).

5. The pre-installed ultra-wide field ligation transparent cap according to claim 3 or 4, characterized in that, The pre-installed ultra-field bandage transparent cap (100) is provided with a release part (106) at its distal end. The outer wall of the release part (106) slopes inward from the proximal end to the distal end.

6. The pre-installed ultra-wide field ligation transparent cap according to claim 5, characterized in that, With the endoscope (400) inserted into the insertion lumen (101), the axis of the endoscope (400) coincides with the axis of the release part (106), or the axis of the insertion lumen (101) is located between the axis of the distal opening of the release part (106) and the connector part (104).

7. The pre-installed ultra-field ligation transparent cap according to claim 6, characterized in that, The outer diameter of the release part (106) decreases from the proximal end to the distal end.

8. The pre-installed ultra-wide field ligation transparent cap according to claim 6, characterized in that, The release portion (106) includes a first cone portion (161) and a second cone portion (162), wherein the first cone portion (161) and the second cone portion (162) are disposed opposite to each other along the circumference of the release portion (106); The taper of the first cone (161) is greater than the taper of the second cone (162).

9. The pre-installed ultra-field ligation transparent cap according to claim 6, characterized in that, The proximal end of the pre-installed ultra-field ligator transparent cap (100) is connected to an elastic tube (300) for fitting the endoscope (400). The axis of the elastic tube (300) is located between the axis of the distal opening of the release part (106) and the connector part (104).

10. A pre-installed ultra-field ligation device, characterized in that, It includes a pre-installed ultra-field ligature transparent cap (100) as described in any one of claims 1 to 9, as well as a release control (500), a release transmission (600), and a plurality of the ligature rings (200). Several of the described ligatures (200) are located in the ligature installation area (102) and are sequentially fitted onto the pre-installed ultra-field ligature transparent cap (100) along the axial direction. Several of the described loops (200) are connected to the release control member (500) via the release transmission member (600).

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