Mucous membrane incision knife with auxiliary foot

Abstract

The utility model discloses a mucosa incision knife with auxiliary feet, and belongs to the technical field of medical instruments. The electrode assembly comprises a cutting end part and an inner tube, and the cutting end part is arranged at the far end of the inner tube; the outer pipe is provided with a hollow channel through which the inner pipe can movably penetrate; the positioning assembly comprises a first sleeve, a second sleeve, a supporting rod and an auxiliary foot, the first sleeve is fixedly arranged on the inner pipe, the second sleeve is fixedly arranged on the outer pipe, one end of the supporting rod is rotatably arranged on the first sleeve, the other end of the supporting rod is rotatably arranged between the two opposite ends of the auxiliary foot, and one end of the auxiliary foot is rotatably arranged on the second sleeve. The other end of the auxiliary foot is used for abutting against the inner wall of the mucosa; the operation part is arranged at the near end of the inner tube and can drive the inner tube to extend into or out of the hollow channel, and the auxiliary foot can be far away from or close to the inner tube along with movement of the inner tube. The auxiliary foot has the advantages that the auxiliary foot can be unfolded at the gastric mucosa to serve as a fixing fulcrum, the operation duration can be shortened, and the operation effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, and it is a mucous membrane incision knife with auxiliary foot. BACKGROUND

[0002] Mucous membrane incision knife is a kind of commonly used surgical instrument, mainly used to carry out endoscopic mucosal resection, electrocoagulation surgery, wherein mucous membrane includes gastric mucosa and intestinal mucosa etc.Gastric mucosa is difficult to accurately reach the specified position when performing surgery due to heart fluttering, and the knife tip is in the suspended position and cannot perform precise polyp electrocision or mucosal cutting.Intestinal mucosa is difficult to accurately reach the specified position when performing surgery due to the natural peristalsis of intestinal tract, and the knife tip is in the suspended position and cannot perform precise polyp electrocision or mucosal cutting.

[0003] In view of the above problems, the prior art needs to be improved. INVENTION CONTENTS

[0004] The utility model discloses a mucous membrane incision knife with auxiliary foot, which can deploy auxiliary foot when the incision knife moves to the vicinity of the lesion position, and can accurately perform electrocision by using auxiliary foot as fulcrum, which helps to shorten the operation time and improve the operation effect.

[0005] In the first aspect, the utility model provides a mucous membrane incision knife with auxiliary foot, comprising:

[0006] An electrode assembly includes a cutting end and an inner tube, and the cutting end is arranged at the distal end of the inner tube.

[0007] An outer tube is provided with a hollow channel for the inner tube to move through.

[0008] A positioning assembly includes a first sleeve, a second sleeve, a support rod and an auxiliary foot, the first sleeve is fixedly arranged on the inner tube, the second sleeve is fixedly arranged on the outer tube, one end of the support rod is rotatably arranged on the first sleeve, the other end of the support rod is rotatably arranged between the opposite ends of the auxiliary foot, one end of the auxiliary foot is rotatably arranged on the second sleeve, and the other end of the auxiliary foot is used for abutting against the inner wall of the mucous membrane.

[0009] An operation part is arranged at the proximal end of the inner tube, and the operation part can drive the inner tube to extend into or out of the hollow channel, and the auxiliary foot can move away from or close to the inner tube along with the movement of the inner tube.

[0010] The mucosa incision knife with the auxiliary foot provided by the utility model can realize the expansion of the auxiliary foot when the cutting end is moved to the vicinity of the lesion position, and the expanded auxiliary foot can be abutted against the inner wall of the mucosa as a fulcrum to accurately perform electrocision, the auxiliary foot and the inner tube form a compass structure, can effectively overcome the interference caused by the beating of the heart driving the stomach flapping, intestinal peristalsis and the like to the operation, and facilitate the medical staff to simply and flexibly adjust the down knife angle, shorten the down knife angle adjustment time during the operation process, can not only greatly shorten the operation time, but also effectively improve the operation effect and reduce the pain of the patient.

[0011] Further, the auxiliary foot comprises a first hinged part, an abutting end part and a connecting rod body, and the first hinged part and the abutting end part are respectively arranged at opposite ends of the connecting rod body.

[0012] Further, the connecting rod body is provided with a containing groove, and the supporting rod is rotatably arranged in the containing groove, and when the connecting rod body is rotated to be parallel to the inner tube, the supporting rod can be accommodated in the containing groove.

[0013] By adopting the above technical scheme, the containing groove is arranged, and when the supporting rod is parallel to the inner tube, the supporting rod is accommodated in the containing groove, so that the volume of the mechanism can be reduced.

[0014] Further, the utility model also comprises a first rotation shaft, opposite side walls of the containing groove are provided with first rotation holes, the supporting rod is provided with a second rotation hole, the first rotation shaft penetrates the second rotation hole, and opposite ends of the first rotation shaft are arranged in the first rotation hole.

[0015] Further, the abutting end part is arranged in a hemispherical shape.

[0016] By adopting the above technical scheme, the abutting end part is arranged in a hemispherical shape, which can help to reduce the pressure on the mucosa and reduce the damage of the abutting end part to the mucosa.

[0017] Further, the first hinged part comprises a first connecting piece, a second connecting piece and a second rotation shaft, the second sleeve is provided with a third connecting piece, the third connecting piece is arranged between the first connecting piece and the second connecting piece, and the second rotation shaft penetrates the first connecting piece, the third connecting piece and the second connecting piece in sequence.

[0018] Further, the supporting rod comprises an integrally formed second hinged part and a supporting rod body, the second hinged part is used for rotationally connecting with the first sleeve, and the supporting rod body is used for rotationally connecting with the auxiliary foot.

[0019] Further, the second hinge part comprises a fourth connecting sheet, a fifth connecting sheet and a third rotating shaft, the first sleeve is provided with a sixth connecting sheet, the sixth connecting sheet is arranged between the fourth connecting sheet and the fifth connecting sheet, and the third rotating shaft sequentially penetrates through the fourth connecting sheet, the sixth connecting sheet and the fifth connecting sheet.

[0020] Further, the inner tube is provided with a first water inlet channel, and the cutting end is provided with a second water inlet channel, and the first water inlet channel and the second water inlet channel are communicated.

[0021] By adopting the technical scheme, liquid can pass through the first water inlet channel and the second water inlet channel to perform submucosa injection to lift mucosa tissue, and the bleeding part can be cleaned.

[0022] Further, the operation part comprises a shell, a fixed pull ring and a sliding block, the fixed pull ring is arranged at the proximal end of the shell, the sliding block is movably arranged on the shell, the proximal end of the outer tube is fixedly connected with the shell, and the proximal end of the inner tube is fixedly connected with the sliding block.

[0023] By adopting the technical scheme, the medical staff can control the inner tube to extend into or out of the hollow channel by pulling the fixed pull ring with one hand and pulling the sliding block with the other hand, and then control the unfolding or folding of the auxiliary foot.

[0024] As can be seen, the mucosa incision knife with an auxiliary foot can drive the inner tube to extend into the hollow channel when the cutting end is moved to the vicinity of the lesion position, the auxiliary foot is away from the inner tube along with the extension of the inner tube, so that the auxiliary foot is unfolded, and the unfolded auxiliary foot is abutted against the inner wall of the mucosa as a fulcrum to accurately perform the electrocision, the auxiliary foot and the inner tube form a compass structure, the interference caused by the beating of the heart driving the stomach to flap and the peristalsis of the intestinal tract on the operation can be effectively overcome, the medical staff can conveniently and flexibly adjust the down knife angle, the adjustment time of the down knife angle in the operation process is shortened, the operation time is greatly shortened, the operation effect is effectively improved, and the pain of the patient is reduced.

[0025] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structure schematic view of the mucosa incision knife with an auxiliary foot is provided.

[0027] Figure 2 For Figure 1The mucosa incision knife with auxiliary feet is provided with an auxiliary foot expansion structure.

[0028] Figure 3 For Figure 2 The mucosa incision knife with auxiliary feet is provided with an auxiliary foot expansion structure.

[0029] Figure 4 For Figure 2 The mucosa incision knife with auxiliary feet is provided with an auxiliary foot expansion structure.

[0030] Figure 5 For Figure 2 The mucosa incision knife with auxiliary feet is provided with an auxiliary foot expansion structure.

[0031] In the drawings: 100, electrode assembly; 110, cutting end; 111, second water inlet channel; 120, inner tube; 121, first water inlet channel; 200, outer tube; 210, hollow channel; 300, positioning assembly; 310, first sleeve; 320, second sleeve; 321, third connecting piece; 330, support rod; 331, second hinge part; 3311, third rotating shaft; 332, support rod body; 340, auxiliary foot; 341, first hinge part; 3411, first connecting piece; 3412, second connecting piece; 3413, second rotating shaft; 342, abutting end; 343, connecting rod body; 3431, accommodating groove; 350, first rotating shaft; 400, operation part; 410, shell; 420, fixed pull ring; 430, sliding block. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0033] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0034] The mucosa incision knife with auxiliary feet mainly applies to polyp electrocision or mucosa incision of gastric mucosa, intestinal mucosa and other mucosae.

[0035] Reference is made to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 3 In one embodiment, the mucosa incision knife with auxiliary feet comprises an electrode assembly 100, an outer tube 200, a positioning assembly 300 and an operation part 400. The electrode assembly 100 comprises a cutting end 110 and an inner tube 120, and the cutting end 110 is arranged at the distal end of the inner tube 120. The outer tube 200 is provided with a hollow passage 210 for the inner tube 120 to move through. The positioning assembly 300 comprises a first sleeve 310, a second sleeve 320, a support rod 330 and an auxiliary foot 340. The first sleeve 310 is fixedly arranged on the inner tube 120, the second sleeve 320 is fixedly arranged on the outer tube 200, one end of the support rod 330 is rotatably arranged on the first sleeve 310, the other end of the support rod 330 is rotatably arranged between the opposite ends of the auxiliary foot 340, one end of the auxiliary foot 340 is rotatably arranged on the second sleeve 320, and the other end of the auxiliary foot 340 is used for abutting against the inner wall of the mucosa. The operation part 400 is arranged at the proximal end of the inner tube 120, and the operation part 400 can drive the inner tube 120 to extend into or out of the hollow passage 210. The auxiliary foot 340 can move away from or close to the inner tube 120 along with the movement of the inner tube 120.

[0036] As can be seen from the above, the mucosa incision knife with auxiliary feet provided by the utility model can drive the inner tube 120 to extend into the hollow passage 210 when the cutting end 110 moves to the vicinity of the lesion position, and the auxiliary foot 340 moves away from the inner tube 120 along with the extension of the inner tube 120, so that the auxiliary foot 340 is unfolded. The unfolded auxiliary foot 340 is abutted against the inner wall of the mucosa as a fulcrum to accurately perform electrocision. The auxiliary foot 340 and the inner tube 120 form a compass structure, which can effectively overcome the interference caused by the heart beating to drive the stomach to flap, the intestinal peristalsis and the like during the operation, facilitate the medical staff to simply and flexibly adjust the down knife angle, shorten the adjustment time of the down knife angle during the operation, greatly shorten the operation time, effectively improve the operation effect and reduce the pain of the patient.

[0037] Reference is made to the accompanying drawings Figure 1 In one embodiment, the operation part 400 comprises a shell 410, a fixed pull ring 420 and a sliding block 430. The fixed pull ring 420 is arranged at the proximal end of the shell 410, the sliding block 430 is movably arranged on the shell 410, the proximal end of the outer tube 200 is fixedly connected with the shell 410, and the proximal end of the inner tube 120 is fixedly connected with the sliding block 430.

[0038] According to the technical scheme, the medical staff can control the inner tube 120 to extend into or out of the hollow passage 210 by pulling the fixed pull ring 420 with one hand and pulling the sliding block 430 with the other hand, thereby controlling the auxiliary foot 340 to be unfolded or stored.

[0039] Reference is made to the accompanying drawings Figure 3 In one of the embodiments, the auxiliary foot 340 comprises a first hinged part 341, an abutting end part 342 and a connecting rod body 343, and the first hinged part 341 and the abutting end part 342 are respectively arranged at opposite ends of the connecting rod body 343.

[0040] In one of the embodiments, the abutting end part 342 is arranged in a hemispherical shape.

[0041] According to the technical scheme, the abutting end part 342 is arranged in a hemispherical shape, which helps to reduce the pressure on the mucosa and reduce the damage to the mucosa caused by the abutting end part 342.

[0042] Reference is made to the accompanying drawings Figure 4 , the accompanying drawings Figure 5 In one of the embodiments, the connecting rod body 343 is provided with a containing groove 3431, and the support rod 330 is rotatably arranged in the containing groove 3431, and when the connecting rod body 343 is rotated to be parallel to the inner tube 120, the support rod 330 can be stored in the containing groove 3431.

[0043] According to the technical scheme, by arranging the containing groove 3431, when the support rod 330 is parallel to the inner tube 120, the support rod 330 is stored in the containing groove 3431, which helps to reduce the size of the mechanism.

[0044] In one of the embodiments, a first rotating shaft 350 is further included, opposite side walls of the containing groove 3431 are provided with first rotating holes (not shown in the figure), the support rod 330 is provided with a second rotating hole (not shown in the figure), the first rotating shaft 350 penetrates the second rotating hole, and opposite ends of the first rotating shaft 350 are arranged in the first rotating holes.

[0045] In one of the embodiments, the first hinged part 341 comprises a first connecting piece 3411, a second connecting piece 3412 and a second rotating shaft 3413, the second sleeve 320 is provided with a third connecting piece 321, the third connecting piece 321 is arranged between the first connecting piece 3411 and the second connecting piece 3412, and the second rotating shaft 3413 penetrates the first connecting piece 3411, the third connecting piece 321 and the second connecting piece 3412 in sequence.

[0046] In one of the embodiments, the support rod 330 comprises a second hinge part 331 and a support rod body 332, the second hinge part 331 is used for rotationally connecting with the first sleeve 310, and the support rod body 332 is used for rotationally connecting with the auxiliary foot 340.

[0047] In one of the embodiments, the second hinge part 331 comprises a fourth connecting sheet, a fifth connecting sheet and a third rotation axis 3311, the first sleeve 310 is provided with a sixth connecting sheet, the sixth connecting sheet is arranged between the fourth connecting sheet and the fifth connecting sheet, and the third rotation axis 3311 sequentially penetrates through the fourth connecting sheet, the sixth connecting sheet and the fifth connecting sheet.

[0048] Reference is made to the accompanying drawings Figure 4 In one of the embodiments, the inner tube 120 is provided with a first water inlet channel 121, and the cutting end part 110 is provided with a second water inlet channel 111, the first water inlet channel 121 and the second water inlet channel 111 are communicated.

[0049] By using the above technical scheme, liquid can pass through the first water inlet channel 121 and the second water inlet channel 111 to perform submucosal injection so as to lift the mucosal tissue, and the bleeding part can also be cleaned.

[0050] In the description of the present specification, the description of the terms "one embodiment", "certain embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A mucotome having an auxiliary foot, characterized in that, The utility model relates to an electrode assembly (100) comprising a cutting end (110) and an inner tube (120), the cutting end (110) is arranged at the distal end of the inner tube (120), an outer tube (200) is provided with a hollow channel (210) for the inner tube (120) to move through, a positioning assembly (300) comprising a first sleeve (310), a second sleeve (320), a support rod (330) and an auxiliary foot (340), the first sleeve (310) is fixedly arranged on the inner tube (120), the second sleeve (320) is fixedly arranged on the outer tube (200), one end of the support rod (330) is rotatably arranged on the first sleeve (310), the other end of the support rod (330) is rotatably arranged between the opposite ends of the auxiliary foot (340), one end of the auxiliary foot (340) is rotatably arranged on the second sleeve (320), and the other end of the auxiliary foot (340) is used for abutting the inner wall of the mucosa, an operation part (400) is arranged at the proximal end of the inner tube (120), the operation part (400) can drive the inner tube (120) to extend into or out of the hollow channel (210), and the auxiliary foot (340) can move away from or close to the inner tube (120) along with the movement of the inner tube (120). The auxiliary foot (340) comprises a first hinged part (341), an abutting end (342) and a connecting rod body (343), the first hinged part (341) and the abutting end (342) are arranged at the opposite ends of the connecting rod body (343) respectively. The connecting rod body (343) is provided with a containing groove (3431), and the support rod (330) is rotatably arranged in the containing groove (3431), when the connecting rod body (343) is rotated to be parallel to the inner tube (120), the support rod (330) can be accommodated in the containing groove (3431). Further comprising a first rotating shaft (350), the opposite side walls of the containing groove (3431) are provided with first rotating holes, the support rod (330) is provided with a second rotating hole, the first rotating shaft penetrates through the second rotating hole, and the opposite ends of the first rotating shaft (350) are arranged in the first rotating holes. The abutting end (342) is arranged in a hemispherical shape.

2. The mucotome with auxiliary feet according to claim 1, characterized in that The first hinged part (341) comprises a first connecting sheet (3411), a second connecting sheet (3412) and a second rotating shaft (3413), the second sleeve (320) is provided with a third connecting sheet (321), the third connecting sheet (321) is arranged between the first connecting sheet (3411) and the second connecting sheet (3412), and the second rotating shaft (3413) penetrates through the first connecting sheet (3411), the third connecting sheet (321) and the second connecting sheet (3412) in sequence.

3. The mucotome with auxiliary feet according to claim 2, characterized in that ​ 4. The mucotome with auxiliary feet according to claim 3, characterized in that ​ 5. The mucotome with auxiliary feet according to claim 2, characterized in that ​ 6. The mucotome with auxiliary feet according to claim 2, characterized in that ​ 7. The mucotome with auxiliary feet according to claim 1, characterized in that The support rod (330) comprises a second hinge part (331) and a support rod body (332), the second hinge part (331) is used for being rotationally connected with the first sleeve (310), and the support rod body (332) is used for being rotationally connected with the auxiliary foot (340).

8. The mucotome with auxiliary foot according to claim 7, characterized in that The second hinge part (331) comprises a fourth connecting sheet, a fifth connecting sheet and a third rotation axis (3311), the first sleeve (310) is provided with a sixth connecting sheet, the sixth connecting sheet is arranged between the fourth connecting sheet and the fifth connecting sheet, and the third rotation axis (3311) sequentially penetrates through the fourth connecting sheet, the sixth connecting sheet and the fifth connecting sheet.

9. The mucotome with auxiliary feet according to claim 1, characterized in that The inner tube (120) is provided with a first water inlet channel (121), and the cutting end part (110) is provided with a second water inlet channel (111); the first water inlet channel (121) and the second water inlet channel (111) are communicated.

10. The mucotome with auxiliary feet according to claim 1, characterized in that The operation part (400) comprises a shell (410), a fixed pull ring (420) and a sliding block (430), the fixed pull ring (420) is arranged at the proximal end of the shell (410), the sliding block (430) is movably arranged on the shell (410), the proximal end of the outer tube (200) is fixedly connected with the shell (410), and the proximal end of the inner tube (120) is fixedly connected with the sliding block (430).

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