Handle assembly and calculus removing instrument

Abstract

The utility model provides a handle assembly and a calculus removing instrument. The handle assembly includes a handle member and an abutment member. A cavity capable of allowing the pulling rope to penetrate in and be taken out in the axial direction is formed in the handle piece, and a first pipe body allowing the near end of the pulling rope to penetrate in and be taken out is arranged in the cavity. The abutting piece is inserted into the handle piece from the outer wall of the handle piece in the radial direction and abuts against the first pipe body, and the abutting piece can move between a first position and a second position relative to the handle piece in the radial direction; when the abutting piece is located at the first position, acting force can be applied to the first pipe body, the first pipe body deforms through the acting force to limit the near end of the traction rope in the first pipe body, and the first pipe body is limited in the cavity by the abutting piece; when the abutting piece is located at the second position, the first pipe body and the near end of the pulling rope can be taken out of the cavity. In this way, the handle piece can be rapidly detached, and the safety of the operation of a patient and the use convenience of a doctor are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of stone treatment, specifically to a handle assembly and a stone removal device. Background Technology

[0002] A stone retrieval basket is an auxiliary tool used in surgery to remove stones from the main bile duct. It primarily uses a stone retrieval handle to guide the basket to the stone site. The handle also controls the opening of the basket to capture and remove the stone from the main bile duct. When the stone is too large to be easily removed, the stone retrieval handle can be replaced with a stone crushing handle. This handle allows for further contraction of the basket, crushing the stone and facilitating its removal.

[0003] Currently, when replacing the rock crusher handle, it is necessary to cut off both the sheath covering the traction rope and the proximal end of the traction rope, and then connect the proximal end of the traction rope to the rock crusher handle. However, cutting the device is a rather cumbersome operation and may also pose certain safety risks. Utility Model Content

[0004] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a handle assembly is provided. The handle assembly includes a handle member and an abutment member. The handle member has a cavity for inserting and removing a traction rope in an axial direction, and a first tube is disposed within the cavity for the proximal end of the traction rope to insert and remove. The abutment member is inserted radially into the handle member from its outer wall and abuts against the first tube, and the abutment member is movable relative to the handle member in a radial direction between a first position and a second position. When the abutment member is in the first position, it applies a force to the first tube, causing the first tube to deform and confine the proximal end of the traction rope within the first tube, which is also confined within the cavity by the abutment member. When the abutment member is in the second position, the first tube and the proximal end of the traction rope can be removed from the cavity.

[0005] The handle assembly of this utility model allows the abutment to apply force to the first tube body when the abutment moves from the second position to the first position. This force can confine the proximal end of the traction rope within the first tube body after deformation. When it is necessary to replace the stone retrieval handle with a stone crushing handle, the abutment can move from the first position to the second position, thereby disengaging the abutment from the first tube body. This enables quick disassembly of the handle assembly, improving the safety of the patient's surgery and the convenience of the doctor's use.

[0006] For example, at least one through groove is provided on the proximal sidewall of the first tube in the axial direction, and the through groove narrows under the force applied by the abutment member.

[0007] For example, the abutment has a first threaded portion, and the handle has a first threaded hole that matches the first threaded portion, so that the abutment is inserted into and rotatably connected to the handle through the first threaded portion and the first threaded hole.

[0008] For example, a gripping portion is formed on the abutment member, and the gripping portion is located outside the handle member; projected along the insertion direction of the abutment member, the gripping portion has an outer diameter larger than that of the first threaded portion.

[0009] According to another aspect of the present invention, a stone-retrieving device is also provided, comprising a traction rope and a stone-retrieving component connected to the distal end, wherein the traction rope is provided with the aforementioned handle assembly at the proximal end.

[0010] The stone-retrieving device of this application includes a handle assembly. Since the handle assembly has the beneficial effects described above, the stone-retrieving device including the handle assembly described above will necessarily have the beneficial effects described above as well.

[0011] Exemplarily, it also includes an injection device that can pass through a traction cord, the proximal end of which abuts against the distal end of a handle.

[0012] For example, the proximal end of the injection unit is provided with a second tube, which is detachably connected to the distal end of the handle unit.

[0013] For example, the stone-retrieving device also includes a sheath through which a traction rope passes, the sheath being connected to the distal end of an injection device.

[0014] For example, the injection component is provided with an injection port, which is connected to the sheath.

[0015] For example, the stone retrieval device also includes a stone crushing handle, which is alternatively connected to the proximal end of the traction rope along with the handle assembly.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1A cross-sectional view of a handle according to an exemplary embodiment of the present invention is shown;

[0019] Figure 2 A front view of a stone-retrieving device including a handle according to an exemplary embodiment of the present invention is shown.

[0020] The components indicated by the reference numerals in the figures are as follows:

[0021] 1. Handle component; 11. First tube body; 111. Through groove; 112. First part; 113. Second part; 2. Traction rope; 3. Abutment component; 31. First threaded part; 32. Grip part; 4. Injection component; 41. Injection port; 5. Sheath tube; 6. Stone removal component; A1. Radial direction; A2. Axial direction. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0023] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0024] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0025] One embodiment of this utility model provides a handle assembly that allows for non-destructive and rapid disassembly and replacement, reducing the time required for replacement. The handle assembly according to an embodiment of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] like Figure 1As shown, the handle assembly includes a handle part 1 and an abutment part 3. The handle part 1 has a cavity for inserting and removing the traction rope 2 along the axial direction A2. A first tube 11 is provided in the cavity for the proximal end of the traction rope 2 to be inserted and removed. The abutment part 3 is inserted into the handle part 1 from the outer wall of the handle part 1 along the radial direction A1 and abuts against the first tube 11. The abutment part 3 is movable relative to the handle part 1 along the radial direction A1 between a first position and a second position. When the abutment part 3 is in the first position, it can apply a force to the first tube 11. The first tube 11 deforms due to the force, which confines the proximal end of the traction rope 2 within the first tube 11. The first tube 11 is confined in the cavity by the abutment part 3. When the abutment part 3 is in the second position, the first tube 11 and the proximal end of the traction rope 2 can be removed from the cavity.

[0027] The proximal end can be represented as the end closer to the doctor. Similarly, the distal end can be represented as the end farther from the doctor.

[0028] A cavity can be formed inside the handle 1 along the radial direction A1. A first tube 11 can be inserted into the cavity. The first tube 11 can be made of an elastic material so that it can undergo elastic deformation when it is abutted by the abutment 3, thereby confining the proximal end of the traction rope 2 inside the first tube 11. When the abutment 3 is detached from the first tube 11, it can recover its deformation so that the proximal end of the traction rope 2 can be pulled out from the first tube 11.

[0029] The radial direction A1 can be represented as Figure 1 The vertical direction shown, the axial direction A2 can be represented as Figure 1 The horizontal direction is shown in the figure. Of course, in some other embodiments, the abutment 3 can be inserted into the outer wall of the handle 1 in other directions and abut against the first tube 11. This application does not specifically limit the insertion direction of the abutment 3, and any direction that can abut against the first tube 11 is acceptable.

[0030] The first position and the second position can be respectively represented as different positions of the abutment 3 relative to the first tube 11, with the first position being closer to the first tube 11 than the second position.

[0031] In this utility model, when the abutment 3 moves from the second position to the first position, the abutment 3 can apply a force to the first tube 11 so that after the first tube 11 deforms, the proximal end of the traction rope 2 can be confined within the first tube 11. When it is necessary to replace the stone retrieval handle with a stone crushing handle, the abutment 3 can move from the first position to the second position, thereby disengaging the abutment 3 from the first tube 11, thus realizing the quick disassembly of the handle 1, improving the safety of the patient's surgery and the convenience of the doctor's use.

[0032] In some embodiments, such as Figure 1As shown, at least one through groove 111 is provided on the proximal side wall of the first tube 11 along the axial direction A2, and the through groove 111 narrows under the force applied by the abutment member 3.

[0033] The through groove 111 can be formed along the axial direction A2 on the side wall near the end of the first tube 11, so that the two end faces of the through groove 111 can form a gap in the radial direction A1, i.e. Figure 1 The first part 112 and the second part 113 are shown.

[0034] The through groove 111 can be formed on the side wall near the end of the first pipe body 11, or it can penetrate through the side wall of the first pipe body 11. This application does not make a specific limitation in this regard. Of course, there can be multiple through grooves 111. Multiple through grooves 111 can be arranged at intervals along the axial direction A2 on the first pipe body 11 to ensure that the first pipe body 111 can undergo large topographic deformation after being subjected to force.

[0035] In the above embodiment, when the abutment 3 applies force to the first tube 11, the first tube 11 can be narrowed to firmly confine the proximal end of the traction rope 2 within the first tube 11, thus avoiding the possibility of the traction rope 2 becoming loose during operation, effectively ensuring the firmness of the connection between the traction rope 2 and the handle 1, and improving the reliability and firmness of the handle assembly.

[0036] In some embodiments, such as Figure 1 As shown, the abutment 3 has a first threaded portion 31, and the handle 1 has a first threaded hole that matches the first threaded portion 31, so that the abutment 3 can be inserted into and rotatably connected to the handle 1 through the first threaded portion 31 and the first threaded hole.

[0037] The abutment 3 can be screw-shaped. When the abutment 3 rotates clockwise, it can move towards the first tube 11 until it abuts against the side wall of the first tube 11. When the abutment 3 rotates counterclockwise, it can move away from the first tube 11 until it disengages from the side wall of the first tube 11.

[0038] The abutment 3 and the handle 1 can be connected by a threaded connection through the first threaded part 31 and the first threaded hole, thereby giving the abutment 3 and the handle 1 good self-locking properties. Specifically, the threaded structure can generate friction during the rotation of the abutment 3, preventing it from loosening when subjected to external force, and effectively improving the reliability and safety of the handle assembly during use.

[0039] In the above embodiment, the handle 1 and the traction rope 2 can be quickly connected and disconnected by rotating the abutment 3. This ensures a firm connection between the two while effectively simplifying the connection structure of the handle assembly and improving the layout rationality of the handle assembly.

[0040] In some embodiments, a gripping portion 32 is formed on the abutment member 3, and the gripping portion 32 is located outside the handle member 1; projected along the insertion direction of the abutment member 3, the gripping portion 32 has an outer diameter larger than that of the first threaded portion 31.

[0041] In the above embodiments, the connection or separation between the first tube 11 and the proximal end of the traction rope 2 can be achieved by rotating the abutment member 3, which greatly facilitates quick assembly and disassembly by doctors, further simplifies the connection structure of the handle assembly, and improves the rationality of the handle assembly layout. Furthermore, the grip portion 32 with a larger outer diameter can provide a wider contact area, making it easier for doctors to grip and apply force, thereby making it easier to rotate the abutment member 3.

[0042] According to another aspect of this utility model, such as Figure 2 As shown, a stone-retrieving device is also provided, including a traction rope 2 and a stone-retrieving component 6 connected to the distal end, with a handle assembly as described above installed at the proximal end of the traction rope 2.

[0043] It should be noted that the sheath of the stone retrieval instrument can be over one meter long to allow it to penetrate deep into the patient's body. When the instrument is inserted, the proximal end can be outside the patient's body, while the distal end can be inside. The distal end of the instrument is equipped with a stone-retrieving component 6 (such as a basket or other structure) connected to the traction rope 2. Pulling the traction rope 2 towards the proximal end allows the stone-retrieving component 6 to capture stones or other foreign objects, and then pulling the instrument removes the stone from the affected area.

[0044] Specifically, the stone retrieval device 6 can switch between a closed state and an open state. When the stone retrieval device 6 is in the closed state, it can be delivered to the vicinity of the stone. At this time, the stone retrieval device 6 can be switched to the open state so that the stone can be fitted into the center of the stone retrieval device 6. Then, the stone retrieval device 6 can be switched back to the closed state, thereby firmly collecting the stone in the stone retrieval device 6, and then removing the stone retrieval device 6 and the stone together from the body.

[0045] The stone-retrieving component 6 can be made of a material with good flexibility and elasticity, such as nickel-titanium alloy or stainless steel wire, and this application does not make specific limitations in this regard.

[0046] The stone-retrieving device of this application includes a handle assembly. Since the handle assembly has the beneficial effects described above, the stone-retrieving device including the handle assembly described above will necessarily have the beneficial effects described above as well.

[0047] In some embodiments, such as Figure 2 As shown, the stone-retrieving device also includes an injection component 4 that can pass through the traction rope 2, with the proximal end of the injection component 4 abutting against the distal end of the handle component 1.

[0048] The flushing solution, such as saline solution, can be injected into the patient's body through the injection device 4. Injecting the flushing solution into the patient's body can help to expel the stones.

[0049] In the above embodiments, the flushing fluid can be injected into the patient's body through the injection device 4, thereby helping to expel the stones from the patient's body and effectively improving the stone removal effect of the stone removal device.

[0050] In some embodiments, the proximal end of the injection component 4 is provided with a second tube (not shown in the figure), which is detachably connected to the distal end of the handle component 1.

[0051] The proximal end of the injection component 4 may be provided with a hollow tube (i.e., a second tube). When the injection component 4 is connected to the handle component 1, the tube of the injection component 4 can be inserted into the first tube 11, thereby enabling the injection component to be inserted into the handle component. The diameter of the second tube can be slightly smaller than the diameter of the first tube 11, so that the second tube can be inserted into the first tube 11, and thus the injection component 4 can be connected to the handle assembly.

[0052] In some other embodiments, an external thread is formed on the outer wall of the second tube, and an internal thread that matches the external thread of the second tube is formed on the inner wall of the first tube 11, so that the second tube can be threadedly connected to the first tube 11. This application does not specifically limit the connection method between the second tube and the first tube 11, and any method that can connect the two is acceptable.

[0053] The liquid injection component 4 and the second tube body can be detachably connected or integrally formed. Detachable connections can include plug-in connections or threaded connections, etc., and this application does not make specific limitations in this regard.

[0054] In the above embodiment, by inserting the second tube on the injection component 4 into the first tube 11, a firm connection can be formed between the injection component 4 and the handle assembly. This not only facilitates the disassembly and assembly of the injection component 4 and the handle assembly, but also ensures the overall firmness and reliability of the stone removal device.

[0055] In some embodiments, such as Figure 2 As shown, the stone-retrieving device also includes a sheath 5 through which the traction rope 2 passes, and the sheath 5 is connected to the distal end of the injection unit 4.

[0056] The sheath 5 can be a tubular structure fitted over the traction rope 2. The tubular shape of the sheath 5 can be cylindrical or elongated, etc.

[0057] The sheath 5 can be made of a flexible material, specifically linear nylon. This application does not impose any specific limitations; any flexible material with bio-friendly properties is acceptable.

[0058] In some embodiments, such as Figure 2 As shown, the injection component 4 is provided with an injection port 41, which is connected to the sheath tube 5.

[0059] In the above embodiment, flushing fluid can be injected into the sheath 5 through the injection port 41. The flushing fluid can flow through the sheath 5 to the location of the stone, thereby timely removing stone fragments and tissue debris generated during the stone removal surgery, effectively ensuring the effectiveness of the stone removal instrument.

[0060] In some embodiments, the stone-retrieving device further includes a stone-crushing handle, which is alternatively connected to the proximal end of the traction rope 2 along with the handle assembly.

[0061] When the stones in a patient's body are too large to be easily removed by the handle assembly, the handle assembly can be detached from the proximal end of the traction rope 2 and a lithotripsy handle can be installed. The lithotripsy handle can further apply a contraction force to the stone through the stone retrieval component 6 located at the distal end of the traction rope 2, thereby crushing the stone and removing it from the patient's body.

[0062] In the above embodiments, doctors can alternately connect the lithotripsy handle and the handle assembly to the proximal end of the stone retrieval device 6 according to actual usage needs and conditions, thereby meeting different usage scenarios and effectively improving the practicality and universality of the stone retrieval device.

[0063] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that these exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0064] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A handle assembly comprising: include: The handle has a cavity inside which a traction rope can be inserted and removed along the axial direction. The cavity is provided with a first tube for the proximal end of the traction rope to be inserted and removed. as well as An abutment is inserted radially into the handle from the outer wall of the handle and abuts against the first tube body, and the abutment is movable radially between a first position and a second position relative to the handle. When the abutment is in the first position, a force can be applied to the first tube body, and the first tube body deforms under the force to confine the proximal end of the traction rope within the first tube body, and the first tube body is confined within the cavity by the abutment. When the abutment is in the second position, the first tube and the proximal end of the traction rope can be removed from the cavity.

2. The handle assembly of claim 1, wherein, At least one through groove is provided on the proximal sidewall of the first tube in the axial direction, and the through groove narrows under the force applied by the abutment.

3. Handle assembly according to claim 1 or 2, characterized in that The abutment has a first threaded portion, and the handle has a first threaded hole that matches the first threaded portion, so that the abutment can be inserted into and rotatably connected to the handle through the first threaded portion and the first threaded hole.

4. The handle assembly of claim 3, wherein, The abutment has a gripping portion formed on it, which is located outside the handle; projected along the insertion direction of the abutment, the gripping portion has an outer diameter larger than that of the first threaded portion.

5. A stone extraction device, characterized in that, It includes a traction rope and a stone-retrieving device connected to the distal end, wherein the proximal end of the traction rope is fitted with a handle assembly as described in any one of claims 1 to 4.

6. A stone extraction instrument according to claim 5, wherein, It also includes an injection device that can pass through the traction rope, the proximal end of the injection device abutting against the distal end of the handle.

7. A stone extraction instrument according to claim 6, wherein, The proximal end of the injection component is provided with a second tube, which is detachably connected to the distal end of the handle component.

8. The stone extraction instrument of claim 6, wherein, The stone-retrieving device also includes a sheath through which the traction rope passes, the sheath being connected to the distal end of the injection device.

9. A stone extraction instrument according to claim 8, wherein, The injection component is provided with an injection port, which is connected to the sheath.

10. The stone-retrieving instrument according to any one of claims 5 to 9, characterized in that, The stone-retrieving device also includes a stone-crushing handle, which is alternatively connected to the proximal end of the traction rope along with the handle assembly.

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