Push-pull handle and medical device

Abstract

The utility model discloses a push -and -pull type handle and medical treatment instrument, include: handle body for connecting medical tool, medical tool includes movable line article, clamping mechanism can slide in handle body on be used for clamping line article to and drive line article remove, locking mechanism is used for locking clamping mechanism's position, unlocking mechanism can slide in handle body on, unlocking mechanism can drive locking mechanism lock or unlock, wherein, when locking mechanism is unlocked, unlocking mechanism can drive clamping mechanism remove. The utility model can realize quick, convenient to core silk lock or unlock, has promoted operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a push-pull handle and a medical device. Background Technology

[0002] In minimally invasive medical fields such as neurointervention and cardiovascular intervention, devices such as thrombectomy stents, adjustable microcatheters, and adjustable microwires have become key tools for treating diseases such as vascular embolism and stenosis. The core function of these devices often relies on a movable core wire inside. By precisely controlling the insertion or withdrawal of this core wire, doctors can remotely change the shape of the distal end of the device, such as opening the thrombectomy stent to capture thrombi, or bending the tip of the microcatheter or microwire at a specific angle to pass through tortuous and complex vascular pathways.

[0003] Push-pull handles are currently the mainstream device for manipulating the aforementioned mandrel. A typical push-pull handle usually includes a housing, a slider slidably mounted on the housing, and a transmission mechanism connecting the slider and the mandrel. During operation, the physician pushes or pulls the slider with their fingers, causing the mandrel to move axially, thereby changing the shape of the functional area at the distal end of the instrument.

[0004] However, existing push-pull handles have a significant drawback: during prolonged surgery, operator fatigue, slight hand tremors, or distraction can alter the force applied to the slider, causing the mandrel to retract or advance unexpectedly. This displacement directly alters the distal end of the instrument, severely impacting surgical outcomes. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a push-pull handle and medical device that enables quick and convenient locking or unlocking of the core wire, improving operational efficiency.

[0006] This utility model also proposes a medical device having the aforementioned push-pull handle.

[0007] A push-pull handle according to a first aspect of the present invention includes: a handle body for connecting a medical tool, the medical tool including a movable linear object; a clamping mechanism slidably disposed on the handle body for clamping the linear object and driving the linear object to move; a locking mechanism for locking the position of the clamping mechanism; and an unlocking mechanism slidably disposed on the handle body, the unlocking mechanism being capable of driving the locking mechanism to lock or unlock; wherein, when the locking mechanism is unlocked, the unlocking mechanism is capable of driving the clamping mechanism to move.

[0008] A push-pull handle and medical device according to an embodiment of the present utility model have at least the following beneficial effects: This invention incorporates a clamping mechanism, a locking mechanism, and an unlocking mechanism. The clamping mechanism securely holds the core wire in place. When the clamping mechanism moves to the target position, the core wire is positioned, causing a change in the shape of the medical instrument. The locking mechanism firmly locks the clamping mechanism in place, effectively preventing unexpected movement of the core wire due to operator hand tremors, fatigue, or distraction, ensuring the stability of the distal end of the instrument and greatly improving the stability and controllability of the surgical procedure. Furthermore, the operator can unlock the locking mechanism using the unlocking mechanism and drive the clamping mechanism to move, causing the core wire to retract or advance, fulfilling the need for shape changes in the medical instrument and improving operational efficiency.

[0009] According to a first aspect of the present invention, a push-pull handle is provided, wherein the clamping mechanism includes a sleeve and a locking member, the sleeve being capable of clamping a linear object, and the locking member connecting to and driving the sleeve to clamp the linear object.

[0010] According to a first aspect of the present invention, a push-pull handle is provided, wherein the clip includes at least two elastic clamping portions, the at least two elastic clamping portions are distributed circumferentially along the clip, the at least two elastic clamping portions are capable of elastic deformation to clamp the linear portion, and the locking member is a threaded sleeve, the thread of the threaded sleeve engaging with the threaded portion of the elastic clamping portion to drive the elastic clamping portion to elastically deform.

[0011] According to a first aspect of the present invention, a push-pull handle is provided, wherein the locking mechanism includes a lock groove, a lock block, and an elastic element, the lock block can be inserted into or disengaged from the lock groove, the elastic element can connect to and drive the lock block to be inserted into the lock groove, and the unlocking mechanism includes a push knob that can abut against the elastic element to drive the lock block to disengage from the lock groove.

[0012] According to a first aspect of the present invention, a push-pull handle is provided with a plurality of locking grooves, which are distributed along the sliding direction of the clamping mechanism.

[0013] According to a first aspect of the present invention, a push-pull handle is provided in which one of the elastic element and the push knob is provided with a plug-in portion, and the other of the elastic element and the push knob is provided with a slot, wherein the plug-in portion matches the slot.

[0014] According to a first aspect of the present invention, a push-pull handle is provided with a clamping mechanism, the sliding mechanism having a first slider and a second slider slidably disposed inside the handle body, an elastic element connected to one of the first slider and the second slider, and a limiting cavity provided between the first slider and the second slider, the limiting cavity being able to accommodate and limit the clamping mechanism.

[0015] According to a first aspect of the present invention, a push-pull handle is provided with a plurality of protrusions on the sidewalls of the first slider and / or the second slider. The plurality of protrusions are distributed along the sliding direction of the clamping mechanism and are capable of abutting against the sidewalls inside the handle body.

[0016] According to a first aspect of the present invention, a push-pull handle has a fixed sleeve and a hollow tube, the fixed sleeve and the hollow tube being coaxially connected, the fixed sleeve being used to connect and fix the medical tool, the hollow tube being disposed between the first slider and the second slider, the interior of the hollow tube allowing the medical tool to pass through, so that the clamping mechanism clamps and fixes the linear object.

[0017] A medical device according to a second aspect of the present invention includes a push-pull handle as described in any one of the above claims.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a push-pull handle and medical device according to an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram showing the sliding state of a push-pull handle and the unlocking mechanism of a medical device; Figure 3 for Figure 1 A top view of a push-pull handle and a medical device is shown. Figure 4 for Figure 1 A cross-sectional view of a push-pull handle and a medical device is shown. Figure 5 for Figure 1 A schematic diagram of the sliding mechanism of a push-pull handle and a medical device is shown. Figure 6 for Figure 1 A schematic diagram of a push-pull handle and a clamping mechanism for a medical device is shown. Figure 7 for Figure 1 A partial view of a push-pull handle and a medical device is shown. Figure 8 for Figure 1 The diagram shows a push-pull handle and a locking mechanism for a medical device.

[0021] Reference numerals in the attached drawings: Separator 1, Mesh tube 1-1, Tube body 1-2, Core wire 1-3, Fixing sleeve 2, Front shell 3, Locking groove 3-1, Front nozzle 4, Push knob 5, Limiting groove 6, Lower right shell 7, Lower left shell 8, Rear cover 9, First slider 10, Locking block 10-1, Elastic element 10-2, Second slider 11, Protrusion 11-1, Hollow tube 12, Clamping mechanism 13, Screw sleeve 13-1, Elastic clamping part 13-2, Clamping sleeve 13-3, Insertion part 15, Slot 16. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following description, in conjunction with the accompanying drawings, describes a push-pull handle and medical device according to an embodiment of the present invention.

[0027] Reference Figure 1 The present invention aims to provide an embodiment of a push-pull handle and a medical device.

[0028] This utility model provides a push-pull handle for controlling thrombectomy stents, adjustable bendable microcatheters, adjustable bendable microguidewires, etc.

[0029] A push-pull handle according to an embodiment of the present invention includes a handle body for connecting a medical tool, the medical tool including movable linear elements.

[0030] Specifically, refer to Figure 1 and Figure 3 The handle body includes a front shell 3, a front nozzle 4, a lower right shell 7, and a lower left shell 8. The front shell 3 is connected to the front nozzle 4, and the lower right shell 7 and the lower left shell 8 are connected. The lower right shell 7 and the lower left shell 8 are installed on the same side of the front shell 3.

[0031] It should be noted that, referring to Figure 4 The medical tool is a separator 1, which includes a mesh tube 1-1, a tube body 1-2 and a core wire 1-3. The core wire 1-3 can retract or advance within the tube body 1-2 to drive the mesh tube 1-1 to undergo morphological changes.

[0032] A push-pull handle according to an embodiment of the present invention further includes a clamping mechanism 13, which is slidably disposed on the handle body for clamping the linear object and driving the linear object to move.

[0033] It should be noted that the wire is core wire 1-3, and the clamping mechanism 13 can clamp and fix core wire 1-3.

[0034] In some specific embodiments of this utility model, reference is made to Figure 4 The clamping mechanism 13 includes a clamp 13-3 and a locking member. The interior of the clamp 13-3 can clamp the linear object, and the locking member connects to and drives the clamp 13-3 to clamp the linear object.

[0035] Understandably, by setting up the clamp 13-3 and the locking element, the core wire 1-3 can be inserted into the interior of the clamp 13-3. The locking element is connected to the clamp 13-3, so that the clamp 13-3 clamps and fixes the core wire 1-3, which can provide a uniform and sufficient clamping force to the core wire 1-3, improve the convenience of clamping and fixing the core wire 1-3 by the clamping mechanism 13, and also reduce the difficulty of fixing the core wire 1-3 to the handle.

[0036] In some embodiments of this utility model, the sleeve 13-3 includes at least two elastic clamping portions 13-2, which are distributed circumferentially along the sleeve 13-3. The at least two elastic clamping portions 13-2 are capable of elastic deformation to clamp the line portion. The locking member is a threaded sleeve 13-1, whose thread engages with the threaded elastic clamping portion 13-2 to drive the elastic clamping portion 13-2 to elastically deform.

[0037] Understandably, the threaded sleeve 13-1 engages with at least two elastic clamping parts 13-2, allowing the elastic deformation of the at least two elastic clamping parts 13-2 to clamp the core wire 1-3, rather than using a rigid pressure block. By clamping the core wire 1-3 with the circumferentially distributed elastic clamping parts 13-2, the contact area between the sleeve 13-3 and the core wire 1-3 is increased, which helps to increase the clamping force. Furthermore, it avoids causing indentations, damage, or even breakage to the delicate surface of the core wire 1-3, thus ensuring the integrity and safety of the medical device.

[0038] In addition, the threaded engagement of the threaded sleeve 13-1 and the elastic clamp 13-2 provides clamping force, which can be used to clamp core wires 1-3 of different diameters.

[0039] A push-pull handle according to an embodiment of the present invention further includes a locking mechanism and an unlocking mechanism. The locking mechanism is used to lock the position of the clamping mechanism 13; the unlocking mechanism is slidably disposed on the handle body and can drive the locking mechanism to lock or unlock.

[0040] Furthermore, referring to Figure 2 When the locking mechanism is unlocked, the unlocking mechanism can drive the clamping mechanism 13 to move.

[0041] This invention incorporates a clamping mechanism 13, a locking mechanism, and an unlocking mechanism. The clamping mechanism 13 clamps and fixes the core wire 1-3. When the clamping mechanism 13 moves to the target position, the core wire 1-3 is positioned in a certain location, causing a change in the shape of the medical tool. The locking mechanism securely locks the clamping mechanism 13, effectively preventing unexpected movement of the core wire 1-3 due to operator hand tremors, fatigue, or distraction, ensuring the stability of the distal end of the instrument and greatly improving the stability and controllability of the surgical procedure. In addition, the operator can unlock the locking mechanism through the unlocking mechanism and drive the clamping mechanism 13 to move, causing the core wire 1-3 to retract or advance, fulfilling the need for shape changes in the medical tool and improving operational efficiency.

[0042] In some embodiments of this utility model, reference is made to Figure 7 and 8 The locking mechanism includes a lock groove 3-1, a lock block 10-1, and an elastic element 10-2. The lock block 10-1 can be inserted into or disengaged from the lock groove 3-1. The elastic element 10-2 can connect to and drive the lock block 10-1 to be inserted into the lock groove 3-1. The unlocking mechanism includes a push knob 5. The push knob 5 can abut against the elastic element 10-2 to drive the lock block 10-1 to disengage from the lock groove 3-1.

[0043] Understandably, by setting the locking groove 3-1, locking block 10-1, and elastic element 10-2, the elastic element 10-2 can provide driving force for the locking block 10-1, allowing the locking block 10-1 to be inserted into the locking groove 3-1, so that the clamping mechanism 13 can automatically lock after the movement is completed, which is in line with surgical operation habits. Furthermore, by setting the push knob 5, the operator can press the push knob 5, which abuts against the elastic element 10-2 and can overcome the elastic force of the elastic element 10-2, so that the elastic element 10-2 drives the locking block 10-1 to disengage from the locking groove 3-1, thus completing the unlocking operation of the locking mechanism. The operation is quick and not easy to accidentally touch.

[0044] It should be noted that the lock groove 3-1 is connected to the handle body, and the lock block 10-1 is connected to the elastic element 10-2, which is a strip structure.

[0045] In some embodiments of this utility model, multiple locking grooves 3-1 are provided, and the multiple locking grooves 3-1 are distributed along the sliding direction of the clamping mechanism 13.

[0046] Understandably, the multiple locking grooves 3-1 distributed along the sliding direction enable the clamping mechanism 13 to be reliably locked at any number of discrete positions within its stroke range, providing doctors with a wealth of stable intermediate operating points and greatly enhancing the flexibility of surgical strategies.

[0047] In some embodiments of this utility model, reference is made to Figure 7 and Figure 8 The handle has a limiting groove 6, which is fastened to the front shell 3. After the push knob 5 passes through the limiting groove 6, it can abut against the elastic member 10-2. Therefore, after the locking mechanism is unlocked, the push knob 5 can move along the inside of the limiting groove 6.

[0048] It should be noted that the locking groove 3-1 is located on the limiting groove 6 of the handle.

[0049] In some embodiments of this utility model, reference is made to Figure 8 One of the elastic element 10-2 and the push knob 5 is provided with a plug portion 15, and the other of the elastic element 10-2 and the push knob 5 is provided with a slot 16, and the plug portion 15 matches the slot 16.

[0050] Understandably, by using the matching of the plug part 15 and the slot 16, after the locking mechanism is unlocked, the push knob 5 can drive the elastic element 10-2, thereby driving the clamping mechanism 13 to move. This ensures that the force transmission between the push knob 5 and the elastic element 10-2 is direct, without delay, and without generating off-center load. It also ensures that the relative positions of the push knob 5 and the elastic element 10-2 are correct, making the unlocking action sensitive and smooth, and improving the certainty and feel of the operation.

[0051] In some embodiments of this utility model, the clamping mechanism 13 is provided with a sliding mechanism, see reference Figure 4 , Figure 5 and Figure 6 The sliding mechanism has a first slider 10 and a second slider 11 that are slidably disposed inside the handle body. An elastic member 10-2 is connected to one of the first slider 10 and the second slider 11. A limiting cavity is provided between the first slider 10 and the second slider 11. The limiting cavity can accommodate and restrict the clamping mechanism 13.

[0052] Understandably, by setting the first slider 10 and the second slider 11, after the clamping mechanism 13 clamps and fixes the core wire 1-3, the clamping mechanism 13 is placed into the limiting cavity between the first slider 10 and the second slider 11, and then the first slider 10 and the second slider 11 are placed into the slide rail of the handle. Thus, the push-twist 5 can drive the elastic element 10-2, which in turn drives the first slider 10, the second slider 11, and the clamping mechanism 13 to slide synchronously, thereby changing the position of the core wire 1-3. This facilitates the installation and fixation of the clamping mechanism 13, effectively preventing the clamping mechanism 13 from shaking or deflecting during the push-pull process, and ensuring the straightness and stability of the axial movement of the core wire 1-3. The limiting cavity restricts the range of motion of the clamping mechanism 13, preventing excessive movement from damaging the internal structure or the instrument.

[0053] In some embodiments of this utility model, reference is made to Figure 6 The sidewalls of the first slider 10 and / or the second slider 11 are provided with a plurality of protrusions 11-1, which are distributed along the sliding direction of the clamping mechanism and can abut against the sidewall inside the handle body.

[0054] Understandably, the protrusions 11-1 on the sidewalls of the first slider 10 and / or the second slider 11 can produce clear, step-by-step tactile feedback during sliding, which provides tactile feedback to the operator and helps improve the accuracy and confidence of the operation.

[0055] In some embodiments of this utility model, the handle has a fixing sleeve 2 and a hollow tube 12, which are coaxially connected. The fixing sleeve 2 is used to connect and fix the medical tool. The hollow tube 12 is disposed between the first slider 10 and the second slider 11. The interior of the hollow tube 12 allows the medical tool to pass through, so that the clamping mechanism 13 clamps and fixes the linear object.

[0056] It is understandable that the tube body 1-2 of the separator 1 passes through the fixed sleeve 2 and the interior of the hollow tube 12 in sequence. Then, the clamping mechanism 13 clamps the fixed core wire 1-3. The hollow tube 12 can support the tube body 1-2 of the separator 1, so that the hollow tube 12 can protect the tube body 1-2 of the separator 1.

[0057] It should be noted that a clearance channel is provided between the first slider 10 and the second slider 11, and the hollow tube 12 is located inside the clearance channel to avoid interference between the first slider 10 and the second slider 11 and the hollow tube 12 during the sliding process.

[0058] Alternatively, glue can be used to fix the tube body 1-2 of the separator 1 inside the fixing sleeve 2, or the tube body 1-2 of the separator 1 can be press-fitted to the inside of the fixing sleeve 2.

[0059] This embodiment also proposes a medical device, including the push-pull handle described above.

[0060] These instruments have a stable locking mechanism, which fundamentally solves the problem of unexpected movement of the core wire 1-3 during surgery, and improves the overall success rate and safety of the surgery.

[0061] In summary, the working principle of a push-pull handle in this embodiment is as follows: When the push knob 5 is pressed without downward force, the elastic element 10-2 can drive the locking block 10-1 to insert into the locking groove 3-1. The locking block 10-1 and the locking groove 3-1 are engaged and limited. At this time, the push knob 5 cannot be pushed or pulled, so that the core wire 1-3 is in a locked state. When the operator presses down the push knob 5 with his finger, the push knob 5 drives the elastic element 10-2 to deform elastically. The elastic element 10-2 drives the locking block 10-1 to disengage from the locking groove 3-1. At this time, the operation can be carried out by sliding the push knob 5 to control the sliding of the first slider 10 and the second slider 11, thereby allowing the core wire 1-3 of the clamping mechanism 13 to move, realizing the expansion and contraction of the mesh tube 1-1.

[0062] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A push-pull handle, characterized in that, include: A handle for attaching a medical tool, the medical tool including movable linear elements; The clamping mechanism (13) is slidably disposed on the handle body and is used to clamp the line object and drive the line object to move. A locking mechanism is used to lock the position of the clamping mechanism (13); An unlocking mechanism is slidably mounted on the handle, and the unlocking mechanism can drive the locking mechanism to lock or unlock. When the locking mechanism is unlocked, the unlocking mechanism can drive the clamping mechanism (13) to move.

2. A push-pull handle according to claim 1, characterized in that, The clamping mechanism (13) includes a sleeve (13-3) and a locking member. The inside of the sleeve (13-3) can clamp the linear object, and the locking member connects to and drives the sleeve (13-3) to clamp the linear object.

3. A push-pull handle according to claim 2, characterized in that, The sleeve (13-3) includes at least two elastic clamping portions (13-2), which are distributed circumferentially along the sleeve (13-3). The at least two elastic clamping portions (13-2) are capable of elastic deformation to clamp the line portion. The locking member is a threaded sleeve (13-1), whose thread engages with the threaded elastic clamping portion (13-2) to drive the elastic clamping portion (13-2) to elastically deform.

4. A push-pull handle according to claim 1, characterized in that, The locking mechanism includes a lock groove (3-1), a lock block (10-1), and an elastic element (10-2). The lock block (10-1) can be inserted into or disengaged from the lock groove (3-1). The elastic element (10-2) can connect to and drive the lock block (10-1) to be inserted into the lock groove (3-1). The unlocking mechanism includes a push knob (5). The push knob (5) can abut against the elastic element (10-2) to drive the lock block (10-1) to disengage from the lock groove (3-1).

5. A push-pull handle according to claim 4, characterized in that, Multiple locking grooves (3-1) are provided, and the multiple locking grooves (3-1) are distributed along the sliding direction of the clamping mechanism (13).

6. A push-pull handle according to claim 4, characterized in that, One of the elastic element (10-2) and the push knob (5) is provided with a plug-in portion (15), and the other of the elastic element (10-2) and the push knob (5) is provided with a slot (16), and the plug-in portion (15) matches the slot (16).

7. A push-pull handle according to claim 4, characterized in that, The clamping mechanism (13) is provided with a sliding mechanism, which has a first slider (10) and a second slider (11) slidably disposed inside the handle. The elastic element (10-2) is connected to one of the first slider (10) and the second slider (11). A limiting cavity is provided between the first slider (10) and the second slider (11), which can accommodate and limit the clamping mechanism (13).

8. A push-pull handle according to claim 7, characterized in that, The sidewalls of the first slider (10) and / or the second slider (11) are provided with a plurality of protrusions (11-1), which are distributed along the sliding direction of the clamping mechanism and can abut against the sidewalls inside the handle body.

9. A push-pull handle according to claim 7, characterized in that, The handle has a fixed sleeve (2) and a hollow tube (12). The fixed sleeve (2) and the hollow tube (12) are coaxially connected. The fixed sleeve (2) is used to connect and fix the medical tool. The hollow tube (12) is disposed between the first slider (10) and the second slider (11). The interior of the hollow tube (12) allows the medical tool to pass through, so that the clamping mechanism (13) clamps and fixes the linear object.

10. A medical device, characterized in that, Includes a push-pull handle as described in any one of claims 1 to 9.

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