Guide wire guiding structure and rotary grinding device
By designing a guide wire guide structure including a housing, a catheter, a fixture and a guide, the problem of lack of guidance when the guide wire enters the locking structure of the rotary grinding handle is solved, stable guidance and efficient assembly of the guide wire are achieved, and the safety and efficiency of rotary grinding interventional treatment are improved.
Patent Information
- Application Number
- CN202422124005.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In rotary grinding interventional treatment, the guidewire lacks guidance when entering the locking structure of the rotary grinding handle, and depends on artificial proficiency, which is more risky.
A guide wire guide structure is designed, including a housing, a conduit, a fixture and a guide. The support part of the guide and the restraint part are used in conjunction to provide smooth transition and stable support, and the movement of the guide on the conduit is achieved through the slide rail.
It improves the coaxiality of the guidewire assembly and operation, reduces the stress concentration problem caused by high-speed rotation of the transmission shaft, and improves the stability and safety of use.
Smart Images
Figure CN222888991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a guide wire guiding structure and a rotational grinding device. Background Art
[0002] Rotational atherectomy, also known as arterial atherectomy, is a minimally invasive surgical procedure used to treat endovascular diseases. This procedure mainly uses a rotational atherectomy device to remove plaque or narrowing in the artery, thereby restoring blood flow, relieving symptoms, and improving the patient's quality of life. This type of surgery is usually used to treat a series of diseases caused by arteriosclerosis or plaque formation, such as coronary artery disease and peripheral artery disease.
[0003] In atherectomy interventional treatment, the stability of the guidewire is a key factor in ensuring the success of the operation. In the existing atherectomy handle design, the stability of the guidewire is mostly improved by a locking / fixing structure for the guidewire. When the guidewire enters the locking / fixing structure, it is necessary to align the end opening. However, the guidewire is often very thin, so the end opening is small and only slightly larger than the outer diameter of the guidewire. In this process, it is more dependent on the proficiency of the operator, which affects work efficiency and is prone to damage the guidewire or increase the risk of contamination. Utility Model Content
[0004] In order to overcome the above technical defects, the purpose of the utility model is to provide a guide wire guiding structure and a rotational atherectomy device, which are used to solve the problem of lack of guidance when the guide wire enters the locking structure of the rotational atherectomy handle, dependence on manual proficiency and high risk.
[0005] The utility model discloses a guide wire guiding structure.
[0006] It comprises a shell, a conduit, and a fixing member and a guiding member located on the conduit;
[0007] The fixing piece is located at one end of the conduit;
[0008] The guide is movably sleeved on the conduit and is slidably connected to the housing;
[0009] The guide member comprises a supporting portion and a restraining portion, wherein the restraining portion is located on a side of the supporting portion away from the fixing member, and the inner diameter of the restraining portion gradually increases in a direction away from the supporting portion;
[0010] The guide member is moved to any position on the catheter by sliding on the housing.
[0011] Preferably, the inner diameter of the constraint portion gradually increases to form an inner wall with a smooth transition.
[0012] Preferably, a connecting member is further included, and the guide member is slidably connected to the shell through the connecting member.
[0013] Preferably, the connecting member comprises:
[0014] A slide rail, disposed on the inner wall of the housing and arranged parallel to the guide tube;
[0015] A connecting portion connected to the guide member and extending toward the slide rail;
[0016] A sliding block is located at the end of the connecting portion and is used to cooperate with the sliding rail.
[0017] Preferably, the connecting portion has a hand-holding area partially extending out of the housing.
[0018] Preferably, two slide rails are arranged opposite to each other along two sides of the conduit;
[0019] The slide rail is configured to limit the support portion from moving out of the guide tube by length.
[0020] Preferably, the guide member moves to a certain position of the catheter according to the working state of the guide wire passing through the catheter.
[0021] Preferably, the inner wall of the conduit is embedded with shock absorbing material.
[0022] The utility model also provides a rotational atherectomy device, comprising any one of the guide wire guiding structures described above.
[0023] Compared with the prior art, the above technical solution has the following beneficial effects:
[0024] The utility model provides a guide wire guiding structure and a atherectomy device, in which a fixing piece and a guiding piece are arranged on a catheter in a shell, wherein the fixing piece fixes the end of the catheter to provide stable support and connection for the end of the guide wire, and the guiding portion in the guiding piece has a flared opening formed by gradually increasing inner diameter, which provides a smooth transition for the guide wire to enter the catheter, thereby solving the problem that the guide wire relies on manual proficiency and has a relatively high risk when entering the locking structure of the atherectomy handle, and realizes the movement of the guiding piece in the catheter through a slide rail, and provides guidance when the guiding piece moves to the end of the catheter, and provides certain constraints and support when moving to other positions of the catheter, thereby improving the coaxiality of the guide wire during assembly and operation, and further reducing the stress concentration problem caused by the high-speed rotation of the transmission shaft sleeved on the guide wire, thereby improving the stability and safety of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a structural schematic diagram of an embodiment of a guide wire guiding structure of the utility model;
[0026] Figure 2 It is a structural schematic diagram of a connecting piece in an embodiment of a guidewire guiding structure described in the utility model.
[0027] Reference numerals:
[0028] 1-housing; 2-conduit; 3-fixing member; 4-guiding member; 41-supporting portion; 42-constraining portion; 5-connecting member; 51-slide rail; 52-connecting portion; 53-slider. DETAILED DESCRIPTION
[0029] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.
[0030] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0031] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0032] It should be understood that the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining," depending on the context.
[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0034] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.
[0035] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and they themselves have no specific meaning. Therefore, "module" and "component" can be used interchangeably.
[0036] Embodiment: The present embodiment discloses a guide wire guiding structure, which provides a guide wire guiding structure with a simple structure and easy operation, and can be used in conjunction with a locking structure in a rotational grinding device for locking the guide wire. Specifically, it is connected to the port through which the guide wire enters the locking structure, so that the guide wire can enter the locking structure through the guide wire guiding structure, thereby improving work efficiency, eliminating the need for manual labor, reducing the possibility of the guide wire being damaged during the assembly process of the rotational grinding device, and reducing safety risks.
[0037] For details, see Figure 1 The guide structure includes a shell 1, a catheter 2, and a fixing member 3 and a guiding member 4 located on the catheter 2; the shell 1 can be connected to or integrated with the shell of the locking structure, the fixing member 3 is located at one end (end B) of the catheter 2, and can be connected to the shell 1 to support the end of the catheter 2. Further, the fixing member 3 can also be fixed to the locking structure (or other structure) to be connected, so that the end of the catheter 2 is aligned with the guide wire entry port of the locking structure, so that the guide wire directly enters the locking structure through the catheter 2. The fixing member 3 can be a tubular shape sleeved on the end of the catheter 2 or a block shape having a hole for the end of the catheter 2 to pass through (reference Figure 2 ).
[0038] See also Figure 2 , the guide member 4 is movably sleeved on the catheter 2 and is slidably connected with the shell 1; it should be noted that the guide member 4 is not directly connected to the catheter 2, but is sleeved on the catheter 2 and can move on the catheter 2. The inner diameter of the guide member 4 should not be less than the inner diameter of the catheter 2. The guide member 4 drives its movement on the catheter 2 by sliding on the shell 1. The guide member 4 includes a support portion 41 and a constraint portion 42, wherein the constraint portion 42 is located on the side of the support portion 41 away from the fixing member 3, and the inner diameter of the constraint portion 42 gradually increases in the direction away from the support portion 41. The support portion 41 is tubular and sleeved on the outer wall of the catheter 2 to achieve movement on the catheter 2. The constraint portion 42 forms a flared opening away from the fixing member 3, and moves on the catheter 2 to the end away from the fixing member 3, thereby forming a flared opening at the end of the catheter 2, so that the guide wire can easily enter the catheter 2.
[0039] In this embodiment, the guide member 4 can be moved to any position on the catheter 2 by sliding on the housing 1. It can be understood that the guide member 4 can guide the guide wire from the end of the catheter 2 ( Figure 1Specifically, when the guide wire needs to enter the catheter 2, the guide member 4 is moved to the end of the catheter 2 away from the fixing member 3 ( Figure 1 The guide member 4 is arranged at the A end of the catheter 2, so that the guide wire enters from the end of the catheter 2 on the side away from the fixing member 3, and the expanded constraint portion 42 is formed to give the guide wire a certain guiding effect, so that it can easily and quickly move toward the catheter 2 along the direction in which the constraint portion 42 is reduced and enter the catheter 2. Furthermore, the guide member 4 can be moved to a certain position of the catheter 2 (between the A end and the B end) according to the working state of the guide wire that passes through the catheter, that is, after the guide wire passes through the catheter 2 and enters the locking structure connected thereto, the guide member 4 can also be moved to other positions on the catheter 2, and the catheter 2 provides a limit and constraint, thereby improving the coaxiality of the guide wire, and the guide member 4 is located on the catheter, providing a certain supporting force, reducing the risk of the guide wire being swung and bent or broken due to the additional stress caused by the high-speed rotation of the transmission shaft sleeved on the guide wire, thereby improving the safety of the operation, and at the same time reducing the need to replace the instrument due to the bend of the guide wire, improving the reliability of the instrument, and improving work efficiency.
[0040] In this embodiment, the catheter 2 is made of a material with high elasticity and low friction coefficient, and a polymer with a special coating disposed therein can also be used to reduce the friction between the guide wire entering the catheter 2 and the inner wall of the catheter 2. Furthermore, the inner wall of the catheter 2 can be embedded with a shock-absorbing material, such as silica gel or special foam, which can provide additional buffering when the catheter 2 is subjected to force and vibration, reduce the direct impact on the guide wire, and thus protect the guide wire inside from damage. As an option, the impact force generated when the guide wire is in the working state can be further absorbed and dispersed through its internal microstructure design, such as a spiral buffer groove (not shown in the figure), so that the guide wire can still remain stable in a complex vascular environment.
[0041] In this embodiment, the inner diameter of the constraint portion 42 gradually increases to form a smoothly transitioned inner wall, that is, the inner diameter of the constraint portion 42 gradually changes, but the change is a continuous change rather than a step-like change, forming a smooth inner wall, thereby reducing the unevenness of the inner wall of the constraint portion 42 that may cause obstacles to the guide wire during entry, and avoiding damage caused by the collision between the guide wire and the inner wall of the constraint portion 42. In the process of the guide wire passing through the restriction of the constraint portion 42 to enter the catheter 2, when the guide wire moves and contacts the inner wall of the constraint portion 42, the guide wire can enter the end of the catheter 2 along the inner wall of the constraint portion 42.
[0042] In this embodiment, as an option, the guide wire guiding structure also includes a connector 5, and the guide member 4 is slidably connected to the shell 1 through the connector 5. As described above, the movement of the guide member 4 on the catheter 2 is driven by its sliding on the shell 1, so the connector 5 does not affect the movement of the guide member 4 on the catheter 2. As a preference, the connector 5 can be connected above or laterally to the guide member 4. Specifically, the connector 5 includes: a slide rail 51, which is provided on the inner wall of the shell 1 and arranged parallel to the catheter 2; a connecting portion 52, which is connected to the guide member 4 and extends toward the slide rail 51; a slider 53, which is located at the end of the connecting portion 52 and is used to cooperate with the slide rail 51, and the sliding connection between the guide member 4 and the shell 1 is achieved through the cooperation of the slide rail 51 and the slider 53. As an option, two slide rails 51 are arranged opposite to each other along the two sides of the conduit 2, and the two sides of the connection part 52 extend toward each slide rail 51, and the sliders 53 are also arranged accordingly, and two are arranged and respectively along the two sides of the conduit 2, so as to improve the stability of the connection between the guide member 4 and the housing 1 and the movement of the guide member 4 on the conduit 2. In addition to the above-mentioned sliders 53 and the slide rails 51, other existing connection structures / devices that can achieve sliding connection without affecting the movement of the guide member 4 can also be used as the connection member, such as a coaxial sliding structure, a pulley, etc.
[0043] Further, the slide rail 51 is configured to limit the support portion 41 from moving out of the conduit 2 by length. In this embodiment, as an example, the slide rail 51 is configured to extend out of the housing 1 in the direction of the conduit 2. The track is parallel to the surface of the housing 1 and is connected to the housing 1 by connecting plates (not marked in the figure) arranged at both ends thereof and perpendicular to the surface of the housing 1. The length of the track can extend corresponding to the conduit 2, so that when the slider 53 is located at the end of the slide rail 51 opposite to the fixing member 3 on the conduit 2 (the end of the fixing member 3 on the conduit 2 is located, that is, Figure 1 At this time, the connecting member 5 drives the end surface of the support portion 41 on the guide member 4 away from the constraint portion 42 to just contact the fixing member 3. When the slider 53 is located at the other end of the slide rail 51, the support portion 41 moves to the end of the conduit 2 away from the fixing member 3 (i.e. Figure 1 A end in the middle), and the constraint portion 42 can be located at the end of the conduit 2. A limiting structure such as a notch can also be provided on the connecting plates at both ends of the track so that the slider does not move out of the slide rail. Optionally, the slide rail 51 can also be embedded in the housing 1 to achieve a sliding connection with the guide member 4.
[0044] Based on the above, the connecting portion 52 may also be provided with a hand-held area ( Figure 2The guide member 4 can be moved on the catheter 2 by the connecting portion 52, so as to control the guide member 4 to move to the end of the catheter 2 when the guide wire enters, and move to a certain position on the catheter 2 when the guide wire is in the working state. The guide member 4 is moved by the setting of the slide rail 51, which can reduce the swing and eccentricity of the catheter 2 caused by the high-speed rotation of the transmission shaft sleeved on the guide wire, so that the catheter 2 is always in a coaxial state with the connected locking structure, reducing deformation or bending caused by stress concentration or shear force, thereby protecting the guide wire therein.
[0045] In this embodiment, the catheter 2, the guide member 4 and the fixing member 3 located in the shell 1 work together to provide precise positioning and stable support for the guide wire, significantly improving safety and work efficiency. The constraint portion 42 in the guide member 4 has a flared opening with a gradually increasing inner diameter to form a tapered structure, which provides a smooth transition for the guide wire and can quickly guide the guide wire into the catheter 2 without relying on manual experience. The guide member 4 provides guidance when it moves to the end of the catheter 2, and provides certain constraints and support when it moves to other positions of the catheter 2, thereby ensuring the coaxiality of the catheter 2, thereby reducing the risk of the guide wire being bent or broken due to the high-speed rotation of the drive shaft.
[0046] Furthermore, the present embodiment also provides a atherectomy device, including the above-mentioned guidewire guiding structure, and may also include but not be limited to other structures / components for realizing applications, such as a guidewire locking structure, a transmission shaft / transmission structure, etc., and may also be connected or assembled with other devices / modules to meet the use requirements of different scenarios. As an example, the guidewire guiding mechanism is used in conjunction with the guidewire locking structure, so that the guidewire passes through the guidewire guiding mechanism and enters the locking structure. The shell of the guidewire guiding mechanism and the shell of the locking structure can be connected, or directly integrated, and connected to the atherectomy handle and other components. By increasing the constraints and limits of the guidewire guiding structure, the coaxiality of the guidewire in the atherectomy device is improved, and the safety risks caused by the guidewire being driven by the transmission shaft to move in the working state are reduced.
[0047] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A guide wire guiding structure, characterized in that: It comprises a shell, a conduit, and a fixing member and a guiding member located on the conduit; The fixing piece is located at one end of the conduit; The guide is movably sleeved on the conduit and is slidably connected to the housing; The guide member comprises a supporting portion and a restraining portion, wherein the restraining portion is located on a side of the supporting portion away from the fixing member, and the inner diameter of the restraining portion gradually increases in a direction away from the supporting portion; The guide member is moved to any position on the catheter by sliding on the housing.
2. The guidewire guiding structure according to claim 1, characterized in that: The inner diameter of the constraint portion gradually increases to form an inner wall with a gentle transition.
3. The guidewire guiding structure according to claim 1, characterized in that: It also includes a connecting piece, through which the guide piece is slidably connected to the shell.
4. The guidewire guiding structure according to claim 3, characterized in that: The connecting piece comprises: A slide rail, disposed on the inner wall of the housing and arranged parallel to the guide tube; A connecting portion connected to the guide member and extending toward the slide rail; A sliding block is located at the end of the connecting portion and is used to cooperate with the sliding rail.
5. The guide wire guiding structure according to claim 4, characterized in that: The connecting portion has a hand-holding area partially extending out of the housing.
6. The guidewire guiding structure according to claim 4, characterized in that: The slide rails are arranged opposite to each other along two sides of the guide tube; The slide rail is configured to limit the support portion from moving out of the guide tube by length.
7. The guidewire guiding structure according to claim 1, characterized in that: The guide piece moves to a certain position of the catheter according to the working state of the guide wire penetrating the catheter.
8. The guidewire guiding structure according to claim 1, characterized in that: The inner wall of the conduit is embedded with shock absorbing material.
9. A rotational atherectomy device, characterized in that: The invention comprises the guidewire guiding structure as claimed in any one of claims 1 to 8.