One-way flap type percutaneous nephroscope calculus removing device

Abstract

The utility model discloses a one-way flap type percutaneous nephroscope calculus removing device which comprises a working sheath and a cylinder calculus removing device, the cylinder calculus removing device is movably connected with the working sheath, the cylinder calculus removing device comprises a fence structure composed of an upper lantern ring, ribs and a lower lantern ring, the ribs are connected with the upper lantern ring, and the lower lantern ring is connected with the lower lantern ring. The inner wall of the bottom end of the cylindrical stone extractor is detachably connected with a valve piece assembly used for preventing stone fragments from returning into the kidney, by means of the cylindrical stone extractor, the front stone can be seen through an endoscope camera installed at the rear end of the cylindrical stone extractor, and therefore the stone extraction efficiency is improved. The fence-shaped hollow structure facilitates observation and drainage, it is guaranteed that stone fragments are locked once entering the cylindrical stone extractor, the stone fragments are prevented from backing back into the kidney, the situation that the operation time is prolonged and larger trauma is caused to a patient is avoided, and the cylindrical stone extractor has certain use value and popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a one-way flap type percutaneous nephrolithotomy device. Background Art

[0002] Percutaneous nephrolithotomy is a common surgical method for treating kidney stones. During the operation, a channel from the skin to the kidney is established at the waist. Through this channel, an endoscope is inserted into the kidney, and the kidney stones are broken up and removed using laser, ultrasound and other lithotripsy tools. Percutaneous nephrolithotomy has the advantages of less damage, less pain, thorough stone removal, and quick recovery.

[0003] There are many ways to remove stone fragments during surgery, such as water backwash, negative pressure suction, grasping with forceps, etc., but they all have their own shortcomings. For example, when water backwash is used to remove stones, a higher water pressure and perfusion volume are required, which increases the intrarenal pressure and brings a series of adverse consequences. The negative pressure suction method requires advanced pressure control equipment and is more expensive. The grasping method with forceps is less efficient and is easy to damage the grasping forceps.

[0004] In summary, a one-way flap-type percutaneous nephrolithotomy device is needed to address the deficiencies in the prior art. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a one-way flap-type percutaneous nephrolithotomy device, which is intended to efficiently and quickly remove kidney stone fragments.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-way flap-type percutaneous nephrolithotomy device, comprising a working sheath and a cylindrical lithotripter, the cylindrical lithotripter is movably connected to the working sheath, the cylindrical lithotripter comprises a fence structure composed of an upper ring, a rib and a lower ring, the rib is connected to the upper ring, the end of the rib away from the upper ring is connected to the lower ring, and a flap assembly for preventing stone fragments from returning to the kidney is detachably connected on the inner wall of the bottom end of the cylindrical lithotripter. The cylindrical lithotripter, which is a fence structure as a whole, allows an endoscope camera installed at the rear end to see the stones in front, and the fence-shaped hollow structure is convenient for observation and drainage, and the flap assembly also plays a similar effect to the mitral valve of the heart, ensuring that stone fragments are locked once they enter the cylindrical lithotripter, preventing the stone fragments from returning to the kidney, avoiding prolonged operation time and causing greater trauma to the patient, and also achieving the purpose of large stone removal, high efficiency, good effect and low cost.

[0007] Furthermore, the petal assembly includes a connecting ring and petals, the connecting ring is threadedly connected to the inner wall of the bottom end of the cylindrical stone remover, and the connecting ring is connected to the petals through an elastic connecting piece.

[0008] Furthermore, there are four petals in total, and the four petals are quarter circles of the same size. When the four petals are closed, a middle hole with a diameter of 3 mm is formed in the middle. The middle hole absorbs the gravel and prevents the gravel from returning to the kidney as the petals open and close.

[0009] Furthermore, a groove for rotation adjustment of the cylindrical stone remover is provided on the inner wall of the working sheath.

[0010] Furthermore, a slide groove for adjusting the extension and retraction of the cylindrical stone extractor is provided on the working sheath.

[0011] Furthermore, the cylindrical stone remover is provided with a sliding block for adapting the groove and the slide groove.

[0012] Furthermore, the groove is formed on the inner wall of the bottom end of the working sheath.

[0013] Furthermore, the cylindrical stone remover is provided with a handle.

[0014] Beneficial effects of the utility model:

[0015] 1. In the utility model, the cylindrical lithotripter is composed of an upper ring, ribs and a lower ring, and the cylindrical lithotripter is a fence structure as a whole, so that the endoscope camera installed at the rear end can see the stones in front, and the fence-like hollow structure is convenient for observation and drainage. The flap assembly also plays a similar role to the mitral valve of the heart, ensuring that the stone fragments are locked once they enter the cylindrical lithotripter, preventing the stone fragments from returning to the kidney, avoiding prolonged operation time and causing greater trauma to the patient, and achieving the purpose of removing a large amount of stones, high efficiency, good effect and low cost;

[0016] 2. In the utility model, the connecting ring and four petals form a petal assembly, and a middle hole with a diameter of 3mm is formed in the middle of the four petals when they are closed. The middle hole plays the role of sucking the gravel and preventing the gravel from returning to the kidney as the petals open and close. The principle is scientific and reasonable, and the practicability is strong.

[0017] 3. In the utility model, a groove for rotation adjustment of the cylindrical stone extractor and a slide groove for telescopic adjustment of the cylindrical stone extractor are provided on the inner wall of the working sheath, so that the slider on the cylindrical stone extractor can cooperate with the groove for use and adjustment. When the slider is on the groove, the cylindrical stone extractor and the petal assembly at the bottom thereof can be ensured to be in the working sheath, and when it is needed, the cylindrical stone extractor can be rotated to move the slider to the slide groove, thereby facilitating the pushing and pulling of the cylindrical stone extractor to complete the corresponding stone extracting work. The structure is simple and reasonable, the practicability is strong, and it has certain use value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the main cross-section of the structure of the utility model.

[0021] Figure 3 It is a schematic cross-sectional view of the working sheath structure of the utility model.

[0022] Figure 4 for Figure 2 Enlarged schematic diagram of the structure of part A in the middle.

[0023] Figure 5 It is a three-dimensional enlarged schematic diagram of the local structure of the petal assembly of the utility model.

[0024] Figure 6 It is an enlarged bottom view of the petal assembly structure of the present invention.

[0025] In the figure: 1-working sheath, 11-groove, 12-slideway; 2-cylindrical stone extractor, 21-upper sleeve ring, 22-rib, 23-lower sleeve ring, 24-slider; 3-petal assembly, 31-connecting ring, 32-petal. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification 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 in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0028] Embodiment 1:

[0029] like Figure 1-2 As shown, a one-way flap-type percutaneous nephrolithotomy device includes a working sheath 1 and a cylindrical lithotripter 2, the cylindrical lithotripter 2 is movably connected to the working sheath 1, the cylindrical lithotripter 2 includes a fence structure composed of an upper ring 21, ribs 22 and a lower ring 23, the ribs 22 are connected to the upper ring 21, and the end of the ribs 22 away from the upper ring 21 is connected to the lower ring 23, and a flap assembly 3 for preventing stone fragments from returning to the kidney is detachably connected to the inner wall of the bottom end of the cylindrical lithotripter 2. The cylindrical lithotripter 2 is composed of an upper ring 21, ribs 22 and a lower ring 23, and the cylindrical lithotripter 2 is a fence structure as a whole, so that the endoscopic camera installed at the rear end can see the stones in front, and the fence-like hollow structure is convenient for observation and drainage. The flap assembly 3 also plays an effect similar to the mitral valve of the heart, ensuring that stone fragments are locked once they enter the cylindrical lithotripter 2, preventing the stones from returning to the kidney, avoiding prolonged operation time and causing greater trauma to the patient.

[0030] Embodiment 2:

[0031] like Figure 1-6 As shown, a one-way flap-type percutaneous nephrolithotomy device includes a working sheath 1 and a cylindrical lithotripter 2, the cylindrical lithotripter 2 is movably connected to the working sheath 1, the cylindrical lithotripter 2 includes a fence structure composed of an upper ring 21, ribs 22 and a lower ring 23, the ribs 22 are connected to the upper ring 21, and the end of the ribs 22 away from the upper ring 21 is connected to the lower ring 23, and a flap assembly 3 for preventing stone fragments from returning to the kidney is detachably connected to the inner wall of the bottom end of the cylindrical lithotripter 2.

[0032] The petal assembly 3 includes a connecting ring 31 and petals 32. The connecting ring 31 is threadedly connected to the inner wall of the bottom end of the cylindrical stone remover 2, and the connecting ring 31 is connected to the petals 32 through an elastic connecting piece.

[0033] The elastic connecting member is a spring, which is used as a connecting structure between the petal 32 and the connecting ring 31 to increase the elastic force while ensuring a certain strength and toughness.

[0034] There are four petals 32 in total, and the four petals 32 are quarter circles of the same size. When the four quarter circle petals are closed, a middle hole with a diameter of 3 mm is formed in the middle. The middle hole absorbs the gravel and prevents the gravel from returning to the kidney as the petals open and close.

[0035] A groove 11 for rotational adjustment of the cylindrical stone extractor 2 is provided on the inner wall of the working sheath 1, and a slide groove 12 for telescopic adjustment of the cylindrical stone extractor 2 is also provided on the working sheath 1, and one end of the groove 11 is connected to the slide groove 12, and a slider 24 for adapting the groove 11 and the slide groove 12 is provided on the cylindrical stone extractor 2. The connected groove 11 and slide groove 12 facilitate the use and adjustment of the slider 24.

[0036] The groove 11 is formed on the inner wall of the bottom end of the working sheath 1 .

[0037] A handle is provided on the cylindrical stone extractor 2, which facilitates pushing and pulling during use, and the handle is provided with anti-slip grooves to improve the grip feel during use.

[0038] The working principle of the utility model is as follows: when performing percutaneous nephrolithotomy, first insert the cylindrical lithotripter 2 into the working sheath 1, then adjust the position of the cylindrical lithotripter 2 to align it with the stone fragments, gently push the cylindrical lithotripter 2 forward, and the flaps 32 of the flap assembly 3 can capture and store the stone fragments. After the operation is completed, take out the cylindrical lithotripter 2, and discharge the collected stone fragments, and prepare for the next stone removal.

[0039] It should be noted that the preferred implementation methods of the utility model are given in the specification and drawings of the utility model. However, the utility model can be implemented in many different forms and is not limited to the implementation methods described in the specification. These implementation methods are not used as additional restrictions on the content of the utility model. The purpose of providing these implementation methods is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various implementation methods not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A one-way flap-type percutaneous nephrolithotomy device, comprising a working sheath (1) and a cylindrical lithotripter (2), characterized in that: The cylindrical lithotripter (2) is movably connected to the working sheath (1), and comprises a fence structure consisting of an upper ring (21), ribs (22) and a lower ring (23), wherein the ribs (22) are connected to the upper ring (21), and one end of the ribs (22) away from the upper ring (21) is connected to the lower ring (23), and a flap assembly (3) for preventing stone fragments from returning to the kidney is detachably connected to the inner wall of the bottom end of the cylindrical lithotripter (2).

2. A one-way flap-type percutaneous nephrolithotomy device according to claim 1, characterized in that: The petal assembly (3) comprises a connecting ring (31) and petals (32); the connecting ring (31) is threadedly connected to the inner wall of the bottom end of the cylindrical stone extractor (2); and the connecting ring (31) is connected to the petals (32) via an elastic connecting piece.

3. A one-way flap-type percutaneous nephrolithotomy device according to claim 2, characterized in that: There are four petals (32) in total, and the four petals (32) are quarter circles of the same size.

4. A one-way flap-type percutaneous nephrolithotomy device according to claim 1, characterized in that: A groove (11) for rotational adjustment of the cylindrical stone extractor (2) is provided on the inner wall of the working sheath (1).

5. A one-way flap-type percutaneous nephrolithotomy device according to claim 4, characterized in that: The working sheath (1) is provided with a slide groove (12) for adjusting the telescopic movement of the cylindrical stone extractor (2).

6. A one-way flap-type percutaneous nephrolithotomy device according to claim 5, characterized in that: The cylindrical stone remover (2) is provided with a sliding block (24) for matching the groove (11) and the sliding groove (12).

7. A one-way flap-type percutaneous nephrolithotomy device according to claim 6, characterized in that: The groove (11) is formed on the inner wall of the bottom end of the working sheath (1).

8. The one-way flap-type percutaneous nephrolithotomy device according to claim 7, characterized in that: The cylindrical stone extractor (2) is provided with a handle.

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