Endoscopic stomach stone snare with enhanced gripping force

Abstract

The invention relates to the field of snare, and particularly discloses an endoscopic gastric stone snare with enhanced gripping force, which comprises a snare mechanism and a pull handle sleeve mechanism, the snare mechanism comprises a core rod assembly, one side of the core rod assembly is rotationally connected with a rotating assembly, and a ferrule assembly is arranged in the core rod assembly and the rotating assembly in a penetrating mode; the pull handle sleeve mechanism is clamped and embedded in the core rod assembly in a limiting sliding mode, and one end of the ferrule assembly is clamped and embedded in the pull handle sleeve mechanism. By means of the sawtooth grooves formed in the sleeve ring body, the gripping force of the sleeve ring on gastric stone or diseased tissue is enhanced, so that the sleeve ring is firmer when clamping the gastric stone or diseased tissue and is not prone to slipping, and the operation efficiency is improved; the snare is flexible in design, can meet the requirements of various endoscopic surgeries, and can provide reliable support for electric resection operation or clamping and taking out of gastrolith or lesion tissue.

Description

Technical Field

[0001] The invention belongs to the field of snares, in particular to an endoscopic gastrolith snare with enhanced gripping force. Background Art

[0002] Gastric stones are composed of indigestible food lumps in the food, which can be divided into plant-based, drug-derived, milk-derived, hair-derived gastric stones, etc. Among them, plant-based gastric stones are the most common. These gastric stones may be formed by the reaction of certain ingredients in the food with gastric acid, or they may be formed by the aggregation of foreign objects that stay in the stomach for a long time.

[0003] The gastric stone snare is mainly used for lithotripsy of gastric stones. The snare is used to trap the gastric stones and apply external force to break them up, thus facilitating their discharge or further processing.

[0004] Traditional endoscopic gastric stone snares are prone to fall off when removing dislodged gastric stones or diseased tissues during surgery, greatly reducing operational efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an endoscopic gastric stone snare with enhanced gripping force to solve the problem that traditional endoscopic gastric stone snares in the prior art are prone to falling off when removing detached gastric stones or diseased tissues during surgery.

[0006] An endoscopic gastrolith snare with enhanced gripping force, comprising a snare mechanism and a handle mechanism;

[0007] The snare mechanism comprises a core rod assembly, one side of the core rod assembly is rotatably connected to a rotating assembly, and a ring assembly is provided through the core rod assembly and the rotating assembly;

[0008] The pull handle sleeve mechanism is limitedly slidably embedded in the core rod assembly, and one end of the ferrule assembly is embedded in the pull handle sleeve mechanism;

[0009] The core rod assembly comprises a core rod body, one end of the core rod body is fixedly connected to a tail ring, and the other end of the core rod body is fixedly connected to a limit ring;

[0010] The rotating assembly comprises a rotating cap, one end of which is fixedly connected to a sheath;

[0011] The ferrule assembly comprises a cable, one end of which is fixedly connected to an electrode, and the other end of which is fixedly connected to a ferrule body;

[0012] A plurality of sawtooth grooves are formed inside the ferrule body;

[0013] The limiting ring is rotatably embedded in the rotating cap, and the pulling cable is slidably embedded in the interior of the tube sheath.

[0014] Preferably, the handle sleeve mechanism comprises a handle sleeve assembly, and the internal sliding card of the handle sleeve assembly is embedded with a pushing assembly and a positioning assembly;

[0015] A plurality of positioning grooves are arranged on the outer side of the core rod assembly.

[0016] Preferably, the positioning assembly can be embedded in the positioning groove, and the pushing assembly can drive the positioning assembly to move away from the positioning groove.

[0017] Preferably, the handle cover assembly comprises a handle cover body, and an electric limit post and an operating ring are arranged on the outer side of the handle cover body;

[0018] The pushing assembly is slidably embedded in the guide rod, and the positioning assembly is slidably embedded in the interior of the pull handle body;

[0019] The ferrule assembly is fixedly embedded in the electrical limit post.

[0020] Preferably, the pushing assembly comprises a trapezoidal block 1 and a spring 1, and a pushing block is fixedly connected to the outer side of the trapezoidal block 1.

[0021] Preferably, the push block is slidably embedded in the guide rod, and the spring is sleeved on the outer side of the guide rod. The spring drives the push block to move and makes the trapezoidal block move away from the positioning assembly.

[0022] Preferably, the positioning assembly comprises a second trapezoidal block and a second spring, and a hollow slider is fixedly connected to one side of the second trapezoidal block.

[0023] Preferably, the second spring drives the second trapezoidal block to move and embed into the positioning groove, the first trapezoidal block is limitedly slidably embedded in the hollow slider, and the movement of the first trapezoidal block can drive the hollow slider to move and make the second trapezoidal block disengage from the positioning groove.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The serrated grooves inside the snare body enhance the gripping force on the gastric stones or diseased tissues, making the snare more secure when clamping the gastric stones or diseased tissues and less likely to slip, thereby improving the efficiency of the operation;

[0026] The snare is flexible in design and can adapt to a variety of endoscopic surgical needs. Whether it is electroresection or the clamping and removal of gastric stones or diseased tissues, the snare can provide reliable support, which makes it have a wider application prospect and higher practical value in clinical applications;

[0027] The triangular clamping groove of the trapezoidal block 2 and the positioning groove ensures the stability of the snare when clamping the gastric stone or the diseased tissue, and prevents the gastric stone or the diseased tissue from accidentally falling off during the clamping and moving process;

[0028] The combination of the trapezoidal block 1 and the spring 1 enables the doctor to unlock the snare by simply pushing the push block. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the handle sleeve mechanism of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the snare mechanism of the present invention;

[0033] Figure 5 For the present invention Figure 4 A magnified view of middle;

[0034] Figure 6 It is a structural schematic diagram of the driving assembly of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the positioning assembly of the present invention;

[0036] Figure 8 It is a cross-sectional view of the pull handle assembly of the present invention;

[0037] Fig. 9 For the present invention Figure 8 Enlarged view of middle B;

[0038] Fig.10 is a cross-sectional view of the present invention;

[0039] Fig.11 For the present invention Fig.10 Enlarged view of C in the middle.

[0040] In the figure: 1. snare mechanism; 11. core rod assembly; 111. core rod body; 112. tail ring; 113. limit ring; 12. rotating assembly; 121. rotating cap; 122. sheath; 13. ferrule assembly; 131. cable; 132. electrode; 133. ferrule body; 134. serrated groove; 14. positioning groove; 2. handle sleeve mechanism; 21. handle sleeve assembly; 211. handle sleeve body; 212. electrode limit post; 213. operating ring; 214. guide rod; 22. pushing assembly; 221. trapezoidal block one; 222. spring one; 223. push block; 23. positioning assembly; 231. trapezoidal block two; 232. spring two; 233. hollow slider. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figures 1 to 5 As shown:

[0043] Embodiment 1: The present invention provides an endoscopic gastrolith snare with enhanced gripping force, comprising a snare mechanism 1 and a handle mechanism 2;

[0044] The snare mechanism 1 comprises a core rod assembly 11, one side of the core rod assembly 11 is rotatably connected to a rotating assembly 12, and a ring assembly 13 is provided through the core rod assembly 11 and the rotating assembly 12;

[0045] The pull handle sleeve mechanism 2 is limitedly slidably embedded in the core rod assembly 11, and one end of the ring assembly 13 is embedded in the pull handle sleeve mechanism 2;

[0046] The core rod assembly 11 comprises a core rod body 111, one end of the core rod body 111 is fixedly connected to a tail ring 112, and the other end of the core rod body 111 is fixedly connected to a limit ring 113;

[0047] The rotating assembly 12 includes a rotating cap 121, one end of which is fixedly connected to a tube sheath 122;

[0048] The collar assembly 13 includes a cable 131, one end of the cable 131 is fixedly connected to an electrode 132, and the other end of the cable 131 is fixedly connected to a collar body 133;

[0049] A plurality of sawtooth grooves 134 are formed inside the ferrule body 133;

[0050] The limiting ring 113 is rotatably engaged with the rotating cap 121 , and the pulling cable 131 is slidably engaged with the inside of the tube sheath 122 .

[0051] As can be seen from the above, when used clinically, the device is inserted through the forceps hole of the endoscope, followed by the endoscope lens into the human body cavity, the ferrule body 133 is moved to be sheathed on the outside of the lesion tissue, the pull sleeve mechanism 2 is moved to make the ferrule body 133 contract and clamp the lesion tissue, and the electrode 132 is connected to a high-frequency power supply to complete the electric cutting operation of the lesion tissue;

[0052] After the electroresection is completed, the pull sleeve mechanism 2 is moved to open the ferrule body 133, and then the ferrule body 133 is controlled to clamp the detached gastric stones or diseased tissues. The gastric stones or diseased tissues can be effectively clamped through the plurality of serrated grooves 134, so as to facilitate the removal of the gastric stones or diseased tissues;

[0053] When the ring body 133 needs to be rotated, after pressing the rotating cap 121 with one hand, the core rod assembly 11 can be rotated with the other hand to make the ring assembly 13 rotate accordingly, thereby making the ring body 133 rotate to a suitable angle, which is convenient for the staff's subsequent operations.

[0054] like Figure 2 and Figure 3 As shown:

[0055] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the handle cover mechanism 2 includes a handle cover assembly 21, and the internal sliding card of the handle cover assembly 21 is embedded with a pushing assembly 22 and a positioning assembly 23;

[0056] A plurality of positioning grooves 14 are formed on the outer side of the core rod assembly 11 .

[0057] Specifically, the positioning assembly 23 can be embedded in the positioning groove 14 , and the pushing assembly 22 can drive the positioning assembly 23 to move away from the positioning groove 14 .

[0058] Specifically, the handle assembly 21 includes a handle body 211, and an electric limit post 212 and an operating ring 213 are arranged on the outside of the handle body 211;

[0059] The pushing component 22 is slidably engaged with the guide rod 214, and the positioning component 23 is slidably engaged with the interior of the pull handle body 211;

[0060] The ferrule assembly 13 is fixedly embedded in the electrical limit post 212 .

[0061] As can be seen from the above, the positioning assembly 23 is moved to be embedded in the corresponding positioning groove 14, thereby limiting the enlargement of the ring body 133 and preventing the clamped gastric stone or diseased tissue from falling off during the movement;

[0062] By moving the pushing component 22, the positioning component 23 can be disengaged from the positioning groove 14, thereby releasing the clamping of the ring body 133 on the gastric stone or diseased tissue. The electrode limit post 212 can facilitate the fixation of the electrode 132, and the guide rod 214 can guide the pushing component 22.

[0063] like Figures 6 to 11 As shown:

[0064] Embodiment 3: This embodiment is basically the same as the previous embodiment, except that the pushing assembly 22 includes a trapezoidal block 221 and a spring 222 , and a pushing block 223 is fixedly connected to the outer side of the trapezoidal block 221 .

[0065] Specifically, the push block 223 is slidably embedded in the guide rod 214 , and the spring 1 222 is sleeved on the outer side of the guide rod 214 . The spring 1 222 drives the push block 223 to move and makes the trapezoidal block 1 221 away from the positioning assembly 23 .

[0066] Specifically, the positioning assembly 23 includes a second trapezoidal block 231 and a second spring 232 , and a hollow slider 233 is fixedly connected to one side of the second trapezoidal block 231 .

[0067] Specifically, the spring 232 drives the trapezoidal block 231 to move and embed into the positioning groove 14, and the trapezoidal block 121 is limitedly slidably embedded in the hollow slider 233. The movement of the trapezoidal block 121 can drive the hollow slider 233 to move and make the trapezoidal block 231 disengage from the positioning groove 14;

[0068] The positioning groove 14 is a triangular slot, which can limit the second trapezoidal block 231 to move in only one direction.

[0069] As can be seen from the above, the second trapezoidal block 231 moves and is embedded in the positioning groove 14 under the drive of the second spring 232, thereby ensuring that the pull handle body 211 cannot move toward the direction of the rotating cap 121;

[0070] When the operating ring 213 is gradually pulled, the pull handle body 211 can be moved along the core rod body 111 toward the tail ring 112, and at the same time, the trapezoidal block 231 can be moved and embedded in the positioning groove 14 near the tail ring 112;

[0071] When the one-way limit of the trapezoidal block 231 needs to be released, the push block 223 is moved to move the trapezoidal block 1 221 and compress the spring 1 222. The movement of the trapezoidal block 1 221 drives the hollow slider 233 to move. The movement of the hollow slider 233 causes the trapezoidal block 231 to disengage from the positioning groove 14 and compress the spring 232, thereby releasing the limit.

[0072] After the push block 223 is released, the spring 1 222 is reset to reset the trapezoidal block 1 221 , and the spring 2 232 is reset to reset the trapezoidal block 2 231 and re-embed it into the designated positioning groove 14 .

[0073] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0074] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. 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 representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0078] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0079] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscopic gastrolith snare with enhanced gripping force, characterized in that: It comprises a snare mechanism (1) and a handle pull mechanism (2); The snare mechanism (1) comprises a core rod assembly (11), one side of the core rod assembly (11) is rotatably connected to a rotating assembly (12), and a ring assembly (13) is provided through the core rod assembly (11) and the rotating assembly (12); The handle sleeve mechanism (2) is limitedly slidably embedded in the core rod assembly (11), and one end of the ring assembly (13) is embedded in the handle sleeve mechanism (2); The core rod assembly (11) comprises a core rod body (111), one end of the core rod body (111) is fixedly connected to a tail ring (112), and the other end of the core rod body (111) is fixedly connected to a limit ring (113); The rotating assembly (12) comprises a rotating cap (121), one end of the rotating cap (121) being fixedly connected to a tube sheath (122); The ferrule assembly (13) comprises a cable (131), one end of the cable (131) is fixedly connected to an electrode (132), and the other end of the cable (131) is fixedly connected to a ferrule body (133); The ferrule body (133) is provided with a plurality of sawtooth grooves (134) inside; The limiting ring (113) is rotatably engaged with the rotating cap (121), and the pulling cable (131) is slidably engaged with the interior of the tube sheath (122).

2. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 1, characterized in that: The handle sleeve mechanism (2) comprises a handle sleeve assembly (21), wherein an internal sliding card of the handle sleeve assembly (21) is embedded with a pushing assembly (22) and a positioning assembly (23); A plurality of positioning grooves (14) are provided on the outer side of the core rod assembly (11).

3. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 2, characterized in that: The positioning component (23) can be embedded in the positioning groove (14), and the pushing component (22) can drive the positioning component (23) to move away from the positioning groove (14).

4. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 3, characterized in that: The handle cover assembly (21) comprises a handle cover body (211), and an electric limit post (212) and an operating ring (213) are arranged on the outer side of the handle cover body (211); The pushing component (22) is slidably embedded in the guide rod (214), and the positioning component (23) is slidably embedded in the interior of the pull handle body (211); The ferrule assembly (13) is fixedly embedded in the electrical limit post (212).

5. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 4, characterized in that: The pushing assembly (22) comprises a trapezoidal block one (221) and a spring one (222), and a pushing block (223) is fixedly connected to the outer side of the trapezoidal block one (221).

6. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 5, characterized in that: The push block (223) is slidably engaged on the guide rod (214), and the spring (222) is sleeved on the outer side of the guide rod (214). The spring (222) drives the push block (223) to move and causes the trapezoidal block (221) to move away from the positioning assembly (23).

7. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 6, characterized in that: The positioning assembly (23) comprises a second trapezoidal block (231) and a second spring (232), and a hollow sliding block (233) is fixedly connected to one side of the second trapezoidal block (231).

8. An endoscopic gastrolith snare with enhanced gripping force as claimed in claim 7, characterized in that: The second spring (232) drives the second trapezoidal block (231) to move and embed into the positioning groove (14); the first trapezoidal block (221) is limitedly slidably embedded in the hollow slider (233); the movement of the first trapezoidal block (221) can drive the hollow slider (233) to move and make the second trapezoidal block (231) disengage from the positioning groove (14).

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