Specimen taking-out protective sleeve for digestive endoscopy

Abstract

The specimen taking-out protective sleeve for the digestive endoscopy comprises a handle, a sleeve arranged at the front end of the handle and a guide wire arranged in the sleeve in a penetrating mode, the handle is used for controlling the guide wire to stretch out and draw back in the sleeve, the head end of the guide wire is reversely bent and fixedly connected with the guide wire through a lock head, and the lock head is fixedly connected with the handle. Therefore, the head end of the guide wire forms a sleeve ring in a surrounding mode, and the sleeve ring is connected with an object taking bag. Wherein the two guide wires forming the sleeve ring are jointly and movably sleeved with a tightening sleeve, the periphery of the inner wall of the sleeve pipe is provided with a limiting blocking piece, the limiting blocking piece is provided with an opening allowing the guide wires to penetrate through, and the tightening sleeve is located on the side, facing the imbedding direction, of the limiting blocking piece. The radial size of the tightening sleeve is larger than the size of an opening formed by the limiting blocking pieces. The fetching bag is arranged on the ferrule formed at the head end of the guide wire, so that the specimen is wrapped and safely taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a specimen removal protective cover for digestive endoscope. Background Art

[0002] With the advancement of endoscopic resection technology, the indications for endoscopic resection have been greatly expanded, and the surgical methods have become more advanced and complete. At present, endoscopic surgical operations such as EMR, ESD, EFTR, STER, and NOTES have been widely carried out, which can complete mucosal resection, submucosal tumor resection, subserous and extraluminal tumor resection of the digestive tract, etc. However, the current method of removing the cut tumor is simple and crude, or the tumor is removed by suction at the front end of the endoscope, or the tumor is clamped and dragged out by a snare / biopsy forceps, which not only requires high endoscopic operation skills, but also easily loses the specimen during the removal process. In addition, these clamps can easily damage the specimen, which is not conducive to later pathological diagnosis. More importantly, it does not follow the surgical tumor-free principle and there is a risk of potential tumor tissue dissemination. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a specimen removal protective cover for digestive endoscopy, which is used to solve the technical problems mentioned in the above background technology.

[0004] The utility model provides a specimen removal protective cover for digestive endoscopy, comprising a handle, a sleeve arranged at the front end of the handle, and a guide wire inserted in the sleeve, wherein the handle is used to control the extension and retraction of the guide wire in the sleeve, the head end of the guide wire is bent back and fixed to itself through a lock, so that the head end of the guide wire forms a loop, and a retrieval bag is connected to the loop;

[0005] Among them, a tightening sleeve is movably connected to the two guide wires constituting the loop, and a limit baffle is provided on the periphery of the inner wall of the sleeve. The limit baffle has an opening for the guide wire to pass through, and the tightening sleeve is located on the side of the limit baffle facing the insertion direction, and the radial size of the tightening sleeve is larger than the opening size formed by the limit baffle.

[0006] Furthermore, in the protective cover for removing specimens for digestive endoscopy, the limiting baffle is arranged away from the port of the sleeve.

[0007] Furthermore, in the protective cover for removing specimens for digestive endoscopy, a spring is commonly sleeved on the two guide wires constituting the ferrule, and two ends of the spring are respectively fixedly connected to the tightening sleeve and the locking head.

[0008] Furthermore, the protective cover for removing specimens for digestive endoscopy, wherein the guide wire is made of nickel-titanium memory alloy.

[0009] Furthermore, the specimen removal protective cover for digestive endoscopy, wherein the opening periphery of the retrieval bag is provided with a fringe, the fringe is turned inward and sewn to the inner side of the retrieval bag, so that a wire threading channel is formed between the fringe and the retrieval bag, and the outer side of the retrieval bag is provided with an inlet and an outlet connected to the wire threading channel, one end of the guide wire passes through the wire threading channel from the inlet and passes out from the outlet.

[0010] Furthermore, the protective cover for specimen removal for digestive endoscopy, wherein the handle includes a holding rod and a sliding sleeve slidably connected to the holding rod, a reel is provided on the sliding sleeve, and one end of the holding rod adjacent to the sleeve is provided with a through hole connected to the sleeve, and the end of the guide wire passes through the through hole and is wound and fixed on the reel.

[0011] Furthermore, the protective cover for specimen removal for digestive endoscopy has linear slide grooves on both sides of the holding rod along the length direction, and a slider that slidably cooperates with the linear slide grooves is provided on the inner side of the slide cover.

[0012] Furthermore, the specimen removal protective cover for digestive endoscopy, wherein the surface of the holding rod is provided with scale lines.

[0013] Furthermore, the digestive endoscope specimen removal protective sleeve has finger rings on opposite sides of the sliding sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By arranging a retrieval bag on the loop formed at the tip of the guide wire, the specimen can be wrapped and safely removed. Specifically, when the retrieval bag reaches the lesion location with the endoscope, the retrieval bag is controlled by the handle to cover the specimen, and after the collection is successful, the guide wire is pulled back to gradually tighten the guide wire constituting the loop under the limit of the tightening sleeve until the retrieval bag completely covers the specimen. In this way, medical personnel can safely and non-destructively remove the specimen from the body, which not only effectively avoids possible damage to the specimen during the retrieval process, but also strictly follows the tumor-free principle in medicine, ensuring the safety of the operation and the integrity of the specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereoscopic diagram of removing the protective cover of a specimen for digestive endoscopy in the utility model;

[0017] Figure 2 It is a schematic diagram of the specific structure of the ferrule in the utility model;

[0018] Figure 3 This is a schematic diagram of the specific structure of the taking bag in the utility model;

[0019] Figure 4This is a schematic diagram of the internal structure of the sleeve in the utility model;

[0020] Figure 5 This is a schematic diagram of the specific structure of the handle in the utility model;

[0021] Description of main component symbols:

[0022] 10. Handle; 20. Sleeve; 31. Guide wire; 32. Lock; 33. Ferrule; 40. Pick-up bag; 51. Tightening sleeve; 52. Limit baffle; 60. Spring; 41. Edge; 42. Inlet; 43. Outlet; 11. Holding rod; 12. Sliding sleeve; 13. Winder; 14. Perforation; 71. Linear slide; 80. Scale line; 90. Finger ring.

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] See also Figures 1 to 4 The specimen removal protective cover for digestive endoscopy in the utility model comprises a handle 10, a sleeve 20 arranged at the front end of the handle 10, and a guide wire 31 inserted into the sleeve 20. The handle 10 is used to control the extension and retraction of the guide wire 31 in the sleeve 20. The head end of the guide wire 31 is bent and fixed to itself through a lock 32, so that the head end of the guide wire 31 forms a loop 33, and a retrieval bag 40 is connected to the loop 33.

[0028] Among them, a tightening sleeve 51 is movably connected to the two guide wires 31 constituting the ring 33, and a limit baffle 52 is provided on the inner wall periphery of the sleeve 20. The limit baffle 52 has an opening for the guide wire 31 to pass through. The tightening sleeve 51 is located on the side of the limit baffle 52 facing the insertion direction, and the radial size of the tightening sleeve 51 is larger than the opening size formed by the limit baffle 52.

[0029] By arranging a retrieval bag 40 on the loop 33 formed at the head end of the guide wire 31, the specimen can be wrapped and safely removed. Specifically, when the retrieval bag 40 reaches the lesion location with the endoscope, the handle 10 is used to control the retrieval bag 40 to take the specimen, and after the taking is successful, the guide wire 31 is pulled back to gradually tighten the guide wire 31 constituting the loop 33 under the limit of the tightening sleeve 51 until the retrieval bag 40 completely wraps the specimen. In this way, medical personnel can safely and non-destructively remove the specimen from the body, which not only effectively avoids possible damage to the specimen during the removal process, but also strictly follows the tumor-free principle in medicine, ensuring the safety of the operation and the integrity of the specimen.

[0030] like Figure 4 As shown, the limit stopper 52 is arranged away from the end of the sleeve 20. This allows a certain space to be left on one side of the limit stopper 52 toward the insertion direction, so that when the guide wire 31 is pulled back to the limit position, the retrieval bag 40 can be completely stored inside the sleeve 20, preventing the retrieval bag 40 from being exposed outside the tube and affecting the insertion of the sleeve 20 into the human body.

[0031] For further information, see Figure 4 , a spring 60 is sleeved on the two guide wires 31 constituting the ferrule 33, and the two ends of the spring 60 are respectively fixed to the tightening sleeve 51 and the lock head 32. In actual application, when the handle 10 controls the guide wire 31 to retract, the tightening sleeve 51 will retreat together with the guide wire 31 until it stops on the limit stopper 52. At this time, the guide wire 31 is continuously pulled, the spring 60 is stretched, and the ferrule 33 gradually tightens the opening under the contraction of the tightening sleeve 51, thereby closing the opening of the taking bag 40; conversely, when the handle 10 is released to pull the guide wire 31, the spring 60 is reset to pull the lock head 32 and the guide wire 31 forward, so that the ferrule 33 automatically opens, and the tightening bag opens.

[0032] It can be understood that the characteristics of the spring 60 enable it to automatically return to its original state after being stretched or compressed. This restoring force ensures that the ring 33 can be quickly and accurately deployed when needed, thereby ensuring the stability and reliability of the operation.

[0033] In this embodiment, the guide wire 31 is a nickel-titanium memory alloy, with a length of 1.2 to 2.3 m and a diameter of 1.8 to 2.3 mm. It can pass through most endoscopic forceps channels and is suitable for gastroscopy and colonoscopy. The retrieval bag 40 is a medical implant material, which is transparent and soft but not easily damaged, and does not affect the surgical field of view. The tumor can be clearly seen under the endoscope through the transparent retrieval bag 40, and the high-density film will not leak liquid or cells. The retrieval bag 40 is disposable to avoid cross infection.

[0034] like Figure 3 As shown, the opening periphery of the picking bag 40 is provided with a rim 41, and the rim 41 is turned inward and sewn on the inner side of the picking bag 40, so that a threading channel is formed between the rim 41 and the picking bag 40, and the outer side of the picking bag 40 is provided with an inlet 42 and an outlet 43 connected to the threading channel, and one end of the guide wire 31 passes through the threading channel from the inlet 42 and passes out from the outlet 43. It can be understood that the process of the guide wire 31 passing through the threading channel is the process of forming the loop 33, and when the guide wire 31 passes through the outlet 43 and fixes itself by locking, the assembly between the picking bag 40 and the guide wire 31 is realized.

[0035] like Figure 5 As shown, the handle 10 includes a gripping rod 11 and a sliding sleeve 12 that is slidably connected to the gripping rod 11, and a reel 13 is provided on the sliding sleeve 12. The end of the gripping rod 11 that is adjacent to the sleeve 20 is provided with a through hole 14 that is connected to the sleeve 20, and the end of the guide wire 31 passes through the through hole 14 and is wound and fixed on the reel 13. It can be understood that in actual operation, medical personnel can hold the gripping rod 11 and control the guide wire 31 by pushing or pulling the sliding sleeve 12. Under normal circumstances, the ferrule 33 is located outside the sleeve 20 and is in an open state. When the sliding sleeve 12 slides backward, the reel 13 drives the guide wire 31 to retract, and at this time, the spring 60 is stretched; conversely, when the sliding sleeve 12 is released, the spring 60 is reset and the guide wire 31 extends forward. This simple operation method allows medical personnel to easily and quickly control the length and position of the guide wire 31, thereby achieving accurate removal of the specimen.

[0036] Furthermore, linear grooves 71 are provided on both sides of the gripping rod 11 along the length direction, and a slider (not shown) is provided on the inner side of the sliding sleeve 12 to slide with the linear grooves 71. The cooperation between the linear grooves 71 and the slider ensures that the sliding sleeve 12 will not deflect relative to the gripping rod 11 during the sliding process. This stability not only helps to improve the smoothness of the operation of the handle 10, but also ensures the precise control of the pulling distance of the guide wire 31.

[0037] Furthermore, the surface of the holding rod 11 is provided with scale lines 80. The setting of the scale lines 80 enables medical personnel to intuitively understand the position of the sliding sleeve 12 relative to the holding rod 11 during operation, so as to accurately judge the length of the guide wire 31 pulled out.

[0038] In addition, finger rings 90 are provided on opposite sides of the sliding sleeve 12 to improve the convenience of operation.

[0039] In summary, the specimen removal protective cover for digestive endoscopy in the above-mentioned embodiment of the utility model realizes the wrapping and safe removal of the specimen by setting a retrieval bag 40 on the loop 33 formed at the head end of the guide wire 31. Specifically, when the retrieval bag 40 reaches the lesion location with the endoscope, the retrieval bag 40 is controlled by the handle 10 to take the specimen, and after the retrieval is successful, the guide wire 31 is pulled back to make the guide wire 31 constituting the loop 33 gradually tighten under the limit of the tightening sleeve 51 until the retrieval bag 40 completely wraps the specimen. In this way, medical personnel can safely and non-destructively take the specimen out of the body, which not only effectively avoids the damage that the specimen may suffer during the removal process, but also strictly follows the tumor-free principle in medicine, ensuring the safety of the operation and the integrity of the specimen.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A protective cover for specimen removal for digestive endoscopy, comprising a handle, a sleeve arranged at the front end of the handle, and a guide wire inserted into the sleeve, wherein the handle is used to control the extension and retraction of the guide wire in the sleeve, and is characterized in that: The head end of the guide wire is bent back and fixed to itself through a lock, so that the head end of the guide wire forms a loop, and a retrieval bag is connected to the loop; Among them, a tightening sleeve is movably connected to the two guide wires constituting the loop, and a limit baffle is provided on the periphery of the inner wall of the sleeve. The limit baffle has an opening for the guide wire to pass through, and the tightening sleeve is located on the side of the limit baffle facing the insertion direction, and the radial size of the tightening sleeve is larger than the opening size formed by the limit baffle.

2. The specimen removal protective cover for digestive endoscopy according to claim 1, characterized in that: The limit stopper is arranged away from the port of the sleeve.

3. The specimen removal protective cover for digestive endoscopy according to claim 1, characterized in that: A spring is sleeved on the two guide wires constituting the ferrule, and two ends of the spring are respectively fixedly connected to the tightening sleeve and the locking head.

4. The specimen removal protective cover for digestive endoscopy according to claim 1, characterized in that: The guide wire is made of nickel-titanium shape memory alloy.

5. The specimen removal protective cover for digestive endoscopy according to claim 1, characterized in that: The opening periphery of the picking bag is provided with a rim, which is turned inward and sewn to the inner side of the picking bag, so that a wire threading channel is formed between the rim and the picking bag, and the outer side of the picking bag is provided with an inlet and an outlet connected to the wire threading channel, and one end of the guide wire passes through the wire threading channel from the inlet and passes out from the outlet.

6. The specimen removal protective cover for digestive endoscopy according to claim 1, characterized in that: The handle includes a holding rod and a sliding sleeve slidably connected to the holding rod, a reel is provided on the sliding sleeve, and a through hole connected to the sleeve is provided at one end of the holding rod adjacent to the sleeve, the end of the guide wire passes through the through hole and is wound and fixed on the reel.

7. The specimen removal protective cover for digestive endoscopy according to claim 6, characterized in that: Linear slide grooves are arranged on both sides of the holding rod along the length direction, and a sliding block which is slidably matched with the linear slide grooves is arranged on the inner side of the sliding sleeve.

8. The specimen removal protective cover for digestive endoscopy according to claim 6, characterized in that: The surface of the holding rod is provided with scale lines.

9. The specimen removal protective cover for digestive endoscopy according to claim 6, characterized in that: Finger rings are arranged on opposite sides of the sliding sleeve.

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