Novel calculus removing mesh basket device

Abstract

The utility model discloses a novel calculus removing net basket device which comprises a handle component used for being held and further comprises a clamping block connected to one end of the handle component in a threaded mode and an adjusting assembly connected to the handle component in a sliding mode, and an outer pipe is connected to the end, away from the handle component, of the interior of the clamping block in a clamped mode. A ring-sleeving ring headless net basket is arranged in the handle part in the length direction, and a crimping pipe is fixedly connected to the end, away from the clamping block, of the ring-sleeving ring headless net basket. According to the biliary tract calculus removing device, through the arrangement of the ring-in-ring headless net basket, before biliary tract calculus is grabbed, the ring-in-ring headless net basket is shrunk in the outer tube, when the biliary tract calculus removing device reaches a proper position, the adjusting assembly is pushed, the ring-in-ring headless net basket stretches out of the outer tube, opening and closing are achieved, and the calculus removing function is achieved; the ring-in-ring headless net basket adopts a ring-in-ring headless end cap net basket structure, so that the oppression of the net basket on a gallbladder wall or a bile duct wall is effectively reduced, and meanwhile, the hidden danger that a head end cap falls off from a human body in an operation is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a novel stone removal net basket device. Background Art

[0002] Most of the digestive system stones are found in the hollow cavities and organs of the human body, especially the bile duct, gallbladder, pancreatic duct, etc. Most of the urinary system stones are found in the hollow cavities and organs of the human body, especially the bladder, ureter, renal pelvis, etc. The clinical manifestations caused by stones in different locations vary greatly, but most of them will cause symptoms such as pain or even infection. Among them, gallstones are a common disease. Gallstones are mainly hardened deposits of bile formed in the gallbladder. The size of gallstones can range from as small as sand to as large as golf balls. Gallstones may not cause any signs or symptoms. If gallstones accumulate in the bile duct and cause blockage, the patient may experience sudden and rapidly increasing pain in the upper right abdomen, sudden and rapidly increasing pain in the center of the abdomen (just below the sternum), back pain between the shoulder blades, right shoulder pain, nausea or vomiting, and other adverse symptoms.

[0003] Due to the development and innovation of endoscopic technology, the clinical treatment method for gallstones is mostly endoscopic minimally invasive stone removal surgery. In this case, the corresponding stone removal equipment will be in strong demand. The most commonly used one is the stone removal basket, but the biliary stone removal baskets on the market are mostly with a head cap. This structure requires crimping or welding an additional head cap at the front end. This structure has two main disadvantages. The first is that the external head cap is prone to stress concentration during the stone removal process, which compresses the gallbladder wall or bile duct wall and causes iatrogenic injury to the patient. The second is that the external head cap is at risk of falling off.

[0004] Therefore, there is an urgent need for a stone removal basket that does not require a head cap to better solve the problems currently faced by doctors. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a novel stone removing basket device, which solves the problems existing in the background technology by cooperating with each other through the ring-in-ring headless basket and the adjustment component.

[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0007] A novel stone-removing net basket device comprises: a handle component for holding, and also comprises: a clamping block threadedly connected to one end of the handle component, an adjusting component slidably connected to the handle component, an outer tube clamped to the end of the clamping block away from the handle component, a ring-in-ring headless net basket is arranged inside the handle component along the length direction, a compression tube is fixedly connected to the end of the ring-in-ring headless net basket away from the clamping block, a spring tube is sleeved on the end of the ring-in-ring headless net basket away from the handle component, a booster tube is fixedly connected to the end of the ring-in-ring headless net basket close to the handle component, the booster tube passes through the bottom of the adjusting component, and the adjusting component is used to drive the ring-in-ring headless net basket to expand and close in the outer tube through the booster tube.

[0008] Further preferably, the ring-in-ring headless basket penetrates the clamping block and the outer tube, and the booster tube extends to the inside of the handle component, and a cavity is provided in the extension direction of the inside of the handle component.

[0009] Further preferably, an external thread is provided on one end of the handle component close to the clamping block, and an internal thread matching the thread pattern is provided on the inner ring of the clamping block.

[0010] More preferably, the adjustment component comprises:

[0011] A sliding block is slidably connected to the handle component.

[0012] There are two first hand-holding rings, which are symmetrically fixed on the sliding block.

[0013] The installation cylinder is fixed on the sliding block.

[0014] The guide block is arranged in the installation tube, and the bottom end of the guide block extends into the cavity of the handle component.

[0015] A set screw, threaded into the guide block, is used to secure the booster tube.

[0016] Further preferably, the interior of the installation cylinder is provided with a placement cavity adapted to the size of the guide block relative to the movable trajectory, and the interior of the guide block is provided with an internal thread channel matched with the movable trajectory of the fixing screw.

[0017] Further preferably, a transverse through hole is provided at the bottom of the guide block, the booster tube passes through the through hole, and the fixing screw abuts against the booster tube.

[0018] Further preferably, a limiting groove adapted to a movable trajectory corresponding to the position of the guide block is provided on the handle component.

[0019] Further preferably, a second hand-holding ring is fixedly connected to one end of the handle component away from the clamping block, and a limiting block is fixedly connected to one end of the handle component close to the second hand-holding ring.

[0020] Compared with the prior art, the utility model has the following advantages: by setting up a ring-in-ring headless net basket, before grabbing bile duct stones, the ring-in-ring headless net basket is retracted inside the outer tube, and when it reaches the appropriate position, the adjustment component is pushed, and the ring-in-ring headless net basket extends out from the inside of the outer tube to achieve opening and closing, thereby achieving the function of removing stones. Furthermore, the ring-in-ring headless net basket adopts a ring-in-ring headless end cap net basket structure, which effectively reduces the pressure of the net basket on the gallbladder wall or the bile duct wall, and at the same time effectively eliminates the hidden danger of the head end cap falling off the human body during surgery. Furthermore, the spring tube is set, and when in use, the flexibility of the outer tube is improved, effectively preventing scratches on the human body during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of this embodiment;

[0022] Figure 2 is a cross-sectional view of this embodiment;

[0023] Figure 3 This is a schematic diagram of the ring-in-ring headless basket structure of this embodiment;

[0024] Figure 4 is a schematic top view of this embodiment;

[0025] Figure 5 This is a schematic diagram of the structure of the handle component of this embodiment;

[0026] Figure 6 Schematic diagram of the limit block structure of this embodiment.

[0027] Figure numerals: 1. handle component; 2. second hand-held ring; 3. limit block; 4. adjustment assembly; 41. sliding block; 42. first hand-held ring; 43. mounting tube; 44. guide block; 5. clamping block; 6. outer tube; 7. booster tube; 8. ring-ring headless basket; 9. crimping tube; 10. spring tube. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1 to 6 The utility model is further introduced in detail.

[0029] A new type of stone removal basket device, such as Figure 1 As shown, it includes: a handle component 1 for holding, and also includes: a clamping block 5 threadedly connected to one end of the handle component 1, an adjusting component 4 slidably connected to the handle component 1, an outer tube 6 is clamped at one end of the clamping block 5 away from the handle component 1, specifically, one end of the outer tube 6 is flared, and the flared clamping block 5 is clamped in the clamping block 5, and a ring-in-ring headless net basket 8 is arranged inside the handle component 1 along the length direction, specifically, the ring-in-ring headless net basket 8 is formed by two nickel-titanium wires that are bent and interlaced after heat setting, as shown in FIG. Figure 3As shown, a crimping tube 9 is fixedly connected to the end of the ring-in-ring headless net basket 8 away from the clamping block 5. Specifically, the crimping tube 9 fixes the four nickel-titanium wires at the deformed tail of the ring-in-ring headless net basket 8 by physical crimping and medical glue. A spring tube 10 is sleeved on the end of the ring-in-ring headless net basket 8 away from the handle component 1. Specifically, the spring tube 10 passes through the nickel-titanium wire of the remaining length of the ring-in-ring headless net basket 8. A booster tube 7 is crimped on the end of the ring-in-ring headless net basket 8 close to the handle component 1. Furthermore, the outer tube 6 passes through the booster tube 7 and the spring tube 10, and is always flush with the end of the crimping tube 9 that is not in contact with the spring tube 10. The booster tube 7 passes through the bottom of the adjusting component 4. The adjusting component 4 is used to drive the ring-in-ring headless net basket 8 to expand and close in the outer tube 6 through the booster tube 7.

[0030] By setting the ring-in-ring headless basket 8, before grabbing the bile duct stones, the ring-in-ring headless basket 8 is retracted inside the outer tube 6. When it reaches the appropriate position, the adjustment component 4 is pushed, and the ring-in-ring headless basket 8 extends from the inside of the outer tube 6 to achieve opening and closing, thereby achieving the function of removing stones. Furthermore, the ring-in-ring headless basket 8 adopts a ring-in-ring headless end cap basket structure, which effectively reduces the pressure of the basket on the gallbladder wall or the bile duct wall, and effectively eliminates the hidden danger of the head end cap falling off the human body during the operation. Furthermore, the spring tube 10 is set, and when in use, the flexibility of the outer tube 6 is improved, effectively preventing the human body from being scratched during the operation.

[0031] Specifically, Figure 2 As shown, the ring-in-ring headless basket 8 penetrates the clamping block 5 and the outer tube 6, and the booster tube 7 extends to the inside of the handle component 1, and a cavity is provided in the extension direction of the inside of the handle component 1.

[0032] Furthermore, when in use, the ring-in-ring headless net basket 8 can be installed on the end of the handle component 1 through the outer tube 6 and the clamping block 5, thereby improving the installation stability of the ring-in-ring headless net basket 8, and when in use, the specifications of the ring-in-ring headless net basket 8 can be replaced according to usage requirements, further improving the practicability of the device.

[0033] Specifically, Figure 2 and Figure 5 As shown, an external thread is provided on one end of the handle component 1 close to the clamping block 5, and an internal thread matching the thread pattern is provided on the inner ring of the clamping block 5, which is convenient and quick to install or remove the outer tube 6 and the clamping block 5, and thus facilitates the replacement of the ring-in-ring headless basket 8.

[0034] Specifically, Figure 1 , Figure 2 as well as Figure 4 As shown, the adjustment component 4 includes:

[0035] The sliding block 41 is slidably connected to the handle component 1 .

[0036] There are two first hand-holding rings 42 , which are symmetrically fixed to the sliding block 41 .

[0037] The mounting tube 43 is fixedly connected to the sliding block 41 . Specifically, the mounting direction of the mounting tube 43 is parallel to the mounting direction of the first hand-held ring 42 , and the mounting tube 43 is fixedly connected to one of the first hand-held rings 42 .

[0038] The guide block 44 is bonded in the mounting tube 43 , and the bottom end of the guide block 44 extends into the cavity of the handle component 1 .

[0039] The fixing screw 45 is threadedly connected in the guide block 44 , and is used to fasten the booster tube 7 .

[0040] Furthermore, one end of the ring-in-ring headless net basket 8 passes through the bottom of the guide block 44 through the booster tube 7, and the fixing screw 45 tightens the booster tube 7. When the sliding block 41 is moved by the first hand-held ring 42, the ring-in-ring headless net basket 8 moves inside the outer tube 6. Specifically, when the first hand-held ring 42 moves to one end close to the clamping block 5, the ring-in-ring headless net basket 8 extends out of the outer tube 6; when the first hand-held ring 42 moves to one end away from the clamping block 5, the ring-in-ring headless net basket 8 extends into the outer tube 6.

[0041] Specifically, Figure 2 As shown, the interior of the installation cylinder 43 is provided with a placement cavity whose size matches the guide block 44 relative to the movable track, and the interior of the guide block 44 is provided with an internal thread channel that matches the movable track of the fixing screw 45.

[0042] Furthermore, when in use, the guide block 44 is clamped in the interior of the mounting tube 43 through the placement cavity, thereby improving the stability of the installation of the guide block 44. Furthermore, the fixing screw 45 is threadedly installed in the guide block 44 through the internal thread channel, and the booster tube 7 is fastened.

[0043] Specifically, Figure 2 As shown, a transverse through hole is provided at the bottom of the guide block 44 , and the booster tube 7 passes through the through hole, and the fixing screw 45 abuts against the booster tube 7 .

[0044] Specifically, Figure 2 and Figure 4 As shown, a limiting groove is provided on the handle component 1 and is adapted to the movable track corresponding to the position of the guide block 44 .

[0045] Furthermore, when the adjusting component 4 moves on the handle component 1, the stability and flexibility of the movement of the adjusting component 4 are improved, and the convenience of unfolding and closing the adjusting ring headless basket 8 is further improved.

[0046] Specifically, Figure 1 and Figure 6As shown, the end of the handle component 1 away from the clamping block 5 is fixedly connected to the second hand-holding ring 2, and the end of the handle component 1 close to the second hand-holding ring 2 is fixedly connected to the limiting block 3.

[0047] Furthermore, when the adjustment component 4 moves on the handle part 1, the limit block 3 limits the adjustment component 4, effectively preventing the adjustment component 4 from moving too much, and the ring-in-ring headless basket 8 from being too deep in the outer tube 6 and difficult to extend, affecting normal use.

[0048] Embodiment 1

[0049] The ring-in-ring headless basket 8 is formed into a fixed shape after heat-setting of memory alloy nickel-titanium wire. After the two rings are wrapped around each other and the tail end is fixed by a 304 stainless steel crimping tube 9, a fixed structure is formed. Due to the shape memory effect, this fixed structure will retract into a smaller medical polymer tube when entering the human body, and release after reaching the corresponding part of the human body, automatically forming a basket-like structure, thereby wrapping the stones and removing them from the human body.

[0050] In clinical practice, the device shrinks the ring-in-ring headless mesh basket 8 into the outer tube 6 through the push-pull adjustment component 4, enters the human body through the working channel of the endoscope, and after finding the stone to be removed, the push-pull adjustment component 4 releases the ring-in-ring headless mesh basket 8 under the field of view of the medical endoscope to form a basket shape. After the stone is trapped, the push-pull adjustment component 4 fixes the stone under the mutual force of the ring-in-ring headless mesh basket 8 and the outer tube 6, and then takes it out.

[0051] How it works

[0052] 4, and then the ring-in-ring headless net basket 8 is retracted into the outer tube 6. When the operation is performed, the sliding block 41 is moved toward the second hand-held ring 2 through the first hand-held ring 42, so that the sliding block 41 drives the push tube 7 to move through the guide block 44, and then the ring-in-ring headless net basket 8 is retracted into the outer tube 6. When entering the appropriate position of the human body, the first hand-held ring 42 moves the sliding block 41 toward the clamping block 5, so that the sliding block 41 drives the push tube 7 to move through the guide block 44, and then the ring-in-ring headless net basket 8 is extended into the outer tube 6, so that the ring-in-ring headless net basket 8 is unfolded to achieve the function of stone removal.

[0053] This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims

1. A novel stone-removing basket device, comprising a handle component (1) for holding, characterized in that: Also includes: A clamping block (5) is threadedly connected to one end of the handle component (1), and an adjusting component (4) is slidably connected to the handle component (1); an outer tube (6) is clamped inside the clamping block (5) at one end away from the handle component (1); a ring-in-ring headless net basket (8) is arranged inside the handle component (1) along the length direction; a compression tube (9) is fixedly connected to one end of the ring-in-ring headless net basket (8) away from the clamping block (5); a spring tube (10) is sleeved on one end of the ring-in-ring headless net basket (8) away from the handle component (1); an auxiliary tube (7) is fixedly connected to one end of the ring-in-ring headless net basket (8) close to the handle component (1); the auxiliary tube (7) passes through the bottom of the adjusting component (4); and the adjusting component (4) is used to drive the ring-in-ring headless net basket (8) to expand and close in the outer tube (6) through the auxiliary tube (7).

2. The stone-removing basket device according to claim 1, characterized in that: The ring-in-ring headless basket (8) penetrates the clamping block (5) and the outer tube (6), and the booster tube (7) extends into the interior of the handle component (1), and a cavity is provided in the extension direction of the interior of the handle component (1).

3. The stone-removing basket device according to claim 1, characterized in that: An external thread is provided on one end of the handle component (1) close to the clamping block (5), and an internal thread matching the thread pattern is provided on the inner ring of the clamping block (5).

4. The stone-removing basket device according to claim 1, characterized in that: The regulating component (4) comprises: A sliding block (41) slidably connected to the handle component (1); Two first hand-held rings (42) are symmetrically fixed to the sliding block (41); A mounting cylinder (43) fixedly connected to the sliding block (41); A guide block (44) is arranged in the installation tube (43), and the bottom end of the guide block (44) extends into the cavity of the handle component (1); A fixing screw (45) is threadedly connected in the guide block (44), and the fixing screw (45) is used to fasten the booster tube (7).

5. The stone-removing basket device according to claim 4, characterized in that: The interior of the installation cylinder (43) is provided with a placement cavity whose size matches the movable track of the guide block (44), and the interior of the guide block (44) is provided with an internal thread channel that matches the movable track of the fixing screw (45).

6. The stone-removing basket device according to claim 4, characterized in that: The bottom of the guide block (44) is provided with a transverse through hole, the booster tube (7) passes through the through hole, and the fixing screw (45) abuts against the booster tube (7).

7. The stone-removing basket device according to claim 4, characterized in that: The handle component (1) is provided with a limiting groove adapted to the movable track corresponding to the position of the guide block (44).

8. The stone-removing basket device according to claim 1, characterized in that: The end of the handle component (1) away from the clamping block (5) is fixedly connected to a second hand-holding ring (2), and the end of the handle component (1) close to the second hand-holding ring (2) is fixedly connected to a limiting block (3).

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