Rollable handle
By designing a retractable handle and utilizing the meshing and locking components of gears and racks, the problem of unstable guide wire operation and control was solved, achieving stable guide wire winding and fine-tuning, and improving the stability and convenience of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, the stability of guidewire manipulation and control is relatively low, especially when fine-tuning, it is difficult to achieve stable control.
Design a retractable handle comprising a housing and a retracting assembly. The retracting and unwinding of the guide wire is achieved by the meshing of gears and racks. The movement of the guide wire is controlled by the sliding adjustment of the rack, and the position of the guide wire is fixed by a locking assembly, thereby improving the stability of operation.
It achieves stable guidewire extension and retraction control, is especially suitable for fine-tuning, improves the stability and convenience of guidewire manipulation, and is easy to maintain and replace.
Smart Images
Figure CN224085802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a medical device, and more particularly to a retractable handle. Background Technology
[0002] In clinical medical devices, guidewires are frequently used as power transmission components for surgical instruments. Currently, when manipulating guidewires, medical staff typically apply direct force to the guidewire, controlling its movement by pushing and pulling it. However, when fine-tuning the guidewire is required, control becomes difficult, relying primarily on the experience of the medical staff. This results in low stability in guidewire manipulation control. Therefore, there is an urgent need for a device that can more stably fine-tune guidewires. Utility Model Content
[0003] The purpose of this invention is to provide a retractable handle to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] The solution to the technical problem of this utility model is:
[0005] A retractable handle includes: a housing with an outlet on one side; a retractable assembly including a gear and a rack, the gear being rotatably connected inside the housing, the rack being slidably connected to the top side of the housing, the rack being slidable in a direction close to or away from the outlet, the rack and the gear meshing with each other, a receiving groove being provided on the outer periphery of the gear, the receiving groove extending around the center of the gear, a guide wire being wound inside the receiving groove, one end of the guide wire extending out of the housing from the outlet.
[0006] This technical solution has at least the following beneficial effects: a portion of the guidewire is wound and stored in the storage slot, and one end of the guidewire extends out of the outer shell from the outlet on one side of the outer shell for use in connecting to external medical surgical instruments. In the initial stage of manipulating the guidewire movement, the entire outer shell and the guidewire can be moved together to achieve the purpose of rapid guidewire movement. When fine adjustment of the guidewire is required, the sliding rack can be used to drive the gear to rotate by the meshing of the rack and gear, thereby realizing the winding or unwinding of the guidewire. When the rack slides towards the outlet, the guidewire is unwound and sent out of the outer shell from the outlet. When the rack slides away from the outlet, the guidewire is wound and returned to the outer shell from the outlet. Since the sliding adjustment of the rack on the outer shell is convenient, the winding and unwinding control of the guidewire can be stably performed, thus improving the stability of the guidewire manipulation control, and is especially suitable for fine adjustment of the guidewire.
[0007] As a further improvement to the above technical solution, a clearance groove is provided on the bottom side of the rack along its length to avoid the guide wire. By providing a clearance groove on the bottom side of the rack to avoid interference between the guide wire and the rack during winding and unwinding, the stability of the rack's sliding is improved.
[0008] As a further improvement to the above technical solution, a locking component is provided at the outlet position of the housing. The locking component can lock or unlock the guide wire. After the guide wire is retracted and adjusted, the position of the guide wire can be locked using the locking component, thus fixing the operating state of the guide wire. When it is necessary to adjust the guide wire again, the locking component can be released from the guide wire, thereby improving the convenience of guide wire operation and control.
[0009] As a further improvement to the above technical solution, the locking assembly includes an outlet nozzle and a locking sleeve. The outlet nozzle is connected to the outer side of the housing at a position corresponding to the outlet. A clamping section is formed at the end of the outlet nozzle away from the housing. The outer diameter of the clamping section gradually decreases in the direction away from the housing. The guide wire passes through the clamping section. A straight groove is provided on the outer side of the clamping section. The locking sleeve is threaded to the outer side of the locking sleeve. A locking section is formed on the inner side of the end of the locking sleeve away from the housing. The inner diameter of the locking section gradually decreases in the direction away from the housing. The locking section presses against the outer side of the clamping section. The guidewire enters the outlet nozzle from the outlet, passes through the clamping section at the end of the outlet nozzle away from the outer shell, and then exits the outlet nozzle. When it is necessary to manipulate and control the guidewire, the locking section at the end of the locking sleeve away from the outer shell is not in contact with the clamping section, or the pressure of the locking section against the clamping section is small. At this time, the guidewire is in the unlocked state, and the guidewire can enter and exit the outlet nozzle. After the position of the guidewire is adjusted, the locking sleeve is locked in the direction closer to the outer shell. At this time, the pressure of the locking section against the outside of the clamping section increases. Since the outer diameter of the clamping section is provided with a straight groove, it can provide space for elastic deformation of the clamping section. The locking section can further increase the pressure against the clamping section, so that the clamping section elastically deforms to clamp the guidewire, thereby achieving the locking of the guidewire.
[0010] As a further improvement to the above technical solution, the outer side of the locking sleeve is provided with multiple first anti-slip patterns. The first anti-slip patterns can increase the friction on the outer side of the locking sleeve, making it less likely to slip when medical staff apply force to the outer side of the locking sleeve to rotate it, thus improving the convenience of rotating and locking or unlocking the locking sleeve.
[0011] As a further improvement to the above technical solution, the outer casing includes a detachably connected left and right housing. The gear is rotatably connected between the left and right housings, and a sliding groove is formed between the left and right housings. The rack is slidably connected within the sliding groove. The left and right housings can be separated, allowing the sliding groove between them to be opened and the rack removed. This facilitates cleaning and maintenance, or replacement of the guide wire, improving the user experience.
[0012] As a further improvement to the above technical solution, annular grooves are respectively provided on the opposite sides of the left and right housings. Connecting shafts are symmetrically arranged on both sides of the gear along its center, and the two connecting shafts on each side of the gear are respectively inserted into the two annular grooves. By inserting the gear into the annular grooves of the left and right housings respectively via the two connecting shafts on both sides, the gear can be rotatably connected to the left and right housings respectively. This disassembly and assembly structure is convenient, further improving the ease of gear maintenance and guide wire replacement.
[0013] As a further improvement to the above technical solution, the top side of the rack is recessed downwards to form an anti-slip groove. When medical staff need to slide the rack, they can insert their fingers into the anti-slip groove, which facilitates pushing the rack and effectively prevents the fingers from slipping when applying force to the rack.
[0014] As a further improvement to the above technical solution, the bottom of the anti-slip groove is provided with multiple second anti-slip patterns. These multiple second anti-slip patterns further increase the friction of the anti-slip groove, making it less likely for medical personnel to slip on the rack when applying force, thus improving the user experience.
[0015] As a further improvement to the above technical solution, the bottom of the storage groove is provided with a fixing hole extending radially along the gear. When it is necessary to fix the guide wire to the storage groove, one end of the guide wire can be inserted into the fixing hole, and then the guide wire can be wound around the storage groove. This allows the guide wire to be quickly fixed to the gear, improving the overall installation efficiency. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional view of the entire utility model.
[0018] Figure 2This is an overall exploded view of this utility model.
[0019] Figure 3 This is a perspective view of the winding component of this utility model.
[0020] Figure 4 This is a three-dimensional view of the outlet nozzle of this utility model.
[0021] In the attached diagram: 100-outer shell, 110-outlet, 120-left shell, 130-right shell, 131-annular groove, 140-slide groove, 210-gear, 211-storage groove, 212-guide wire, 213-connecting shaft, 220-rack, 221-avoidance groove, 222-anti-slip groove, 223-second anti-slip texture, 310-outlet nozzle, 311-clamping section, 312-straight groove, 320-locking sleeve, 321-first anti-slip texture. 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" or "second" is used in the description, 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 implicitly indicating the order of the indicated technical features.
[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0026] Reference Figure 1 , Figure 2 and Figure 3A retractable handle includes a housing 100 and a retractable assembly. The housing 100 has an outlet 110 on one side. The retractable assembly includes a gear 210 and a rack 220. The gear 210 is rotatably connected to the housing 100, and the rack 220 is slidably connected to the top side of the housing 100. Naturally, side wings for sliding connection can be provided on both sides of the rack 220. When the rack 220 is slidably connected to the housing 100, the side wings on both sides of the rack 220 can engage with the sliding structure on the housing 100. The rack 220 can slide in a direction close to or away from the outlet 110. The rack 220 meshes with the gear 210. A receiving groove 211 is provided on the outer periphery of the gear 210, extending around the center of the gear 210. A guide wire 212 is wound inside the receiving groove 211, and one end of the guide wire 212 extends out of the housing 100 from the outlet 110.
[0027] As described above, a portion of the guidewire 212 is wound and stored in the storage slot 211. One end of the guidewire 212 extends out of the housing 100 from the outlet 110 on one side of the housing 100 for use with external medical surgical instruments. In the initial stage of manipulating the guidewire 212, the entire housing 100 can be moved together with the guidewire 212 to achieve rapid movement of the guidewire 212. When fine adjustment of the guidewire 212 is required, the sliding rack 220 is used. By utilizing the meshing between the rack 220 and the gear 210, the gear 210 can be rotated. The rack 220 slides towards the outlet 110, thereby enabling the winding or unwinding of the guide wire 212. When the rack 220 slides towards the outlet 110, the guide wire 212 is unwound and sent out of the housing 100 from the outlet 110. When the rack 220 slides away from the outlet 110, the guide wire 212 is wound up and returned to the housing 100 from the outlet 110. Since the sliding adjustment of the rack 220 on the housing 100 is convenient, the winding and unwinding control of the guide wire 212 can be stably performed, thus improving the stability of the operation and control of the guide wire 212, and is especially suitable for fine-tuning the guide wire 212.
[0028] When the guide wire 212 is wound around the receiving groove 211, if the guide wire 212 is wound too much, it will protrude into the tooth groove of the gear 210, which will affect the meshing between the gear 210 and the rack 220. Therefore, in this embodiment, the bottom side of the rack 220 is provided with a clearance groove 221 along its length to avoid the guide wire 212. The clearance groove 221 on the bottom side of the rack 220 can avoid the winding or unwinding activities of the guide wire 212, thus reducing the interference between the guide wire 212 and the rack 220 during the winding and unwinding process and improving the stability of the sliding of the rack 220.
[0029] After the rack 220 is adjusted to its proper position on the housing 100, its position can be further defined to locate the guide wire 212. In this embodiment, the guide wire 212 is located directly at the position where the rack 220 extends from the outlet 110. Specifically, the housing 100 is equipped with a locking component at the outlet 110, which can lock or unlock the guide wire 212. After the guide wire 212 is adjusted, its position can be locked using the locking component, thus fixing its operating state. When the guide wire 212 needs to be adjusted again, the locking component can be released, thereby improving the convenience of controlling the guide wire 212.
[0030] The locking assembly is mainly used to lock or unlock the guide wire 212 extending from the outlet 110. It has various structural forms; for example, a spring clip is provided on the housing 100 near the outlet 110, which can press and fix the guide wire 212 onto the housing 100. In this embodiment, the locking assembly includes a delivery nozzle 310 and a locking sleeve 320. The delivery nozzle 310 is connected to the outside of the housing 100 at a position corresponding to the outlet 110. Figure 4As shown, the end of the outlet nozzle 310 away from the housing 100 has a clamping section 311. The outer diameter of the clamping section 311 gradually decreases in the direction away from the housing 100. The guide wire 212 passes through the clamping section 311. A straight groove 312 is provided on the outer side of the clamping section 311. The locking sleeve 320 is threaded to the outer side of the locking sleeve 320. A locking section is formed on the inner side of the end of the locking sleeve 320 away from the housing 100. The inner diameter of the locking section gradually decreases in the direction away from the housing 100. The locking section presses against the outer side of the clamping section 311. In practical applications, two straight grooves 312 can be symmetrically provided on the outer side of the clamping section 311. The two straight grooves 312 divide the clamping section 311 into two parts, so that when the locking section presses against the clamping section 311, the elastic deformation of the clamping section 311 is increased, thereby increasing the clamping force on the guide wire 212. The guide wire 212 enters the outlet nozzle 310 from the outlet 110, passes through the clamping section 311 at the end of the outlet nozzle 310 away from the outer shell 100, and then exits the outlet nozzle 310. When it is necessary to manipulate and control the guide wire 212, the locking section of the locking sleeve 320 at the end away from the outer shell 100 and the clamping section 311 are not in contact, or the resistance of the locking section to the clamping section 311 is small. At this time, the guide wire 212 is in the unlocked state, and the guide wire 212 can enter and exit the outlet nozzle 310. After the position of wire 212 is adjusted, the locking sleeve 320 is locked in the direction close to the outer shell 100. At this time, the pressure of the locking section against the outside of the clamping section 311 increases. Since the outer diameter of the clamping section 311 is provided with a straight groove 312, it can provide space for elastic deformation of the clamping section 311. The locking section can further increase the pressure on the clamping section 311, so that the clamping section 311 elastically deforms to clamp the guide wire 212, thereby achieving the locking of the guide wire 212.
[0031] To improve the ease of rotating the locking sleeve 320, in this embodiment, the outer side of the locking sleeve 320 is provided with multiple first anti-slip textures 321. These textures are arranged around the outer periphery of the locking sleeve 320 and extend axially along the locking sleeve 320. The first anti-slip textures 321 increase the friction on the outer side of the locking sleeve 320, making it less likely for medical personnel to slip when rotating the locking sleeve 320 by applying force to its outer side, thus improving the ease of locking or unlocking the locking sleeve 320.
[0032] The outer casing 100 can be designed as a detachable structure to facilitate internal maintenance or replacement of the guide wire 212. Specifically, the outer casing 100 includes a detachably connected left casing 120 and a right casing 130. For example, the left casing 120 and the right casing 130 can be connected to each other by snap-fit or by screws. The gear 210 is rotatably connected between the left casing 120 and the right casing 130. A sliding groove 140 is formed between the left casing 120 and the right casing 130, and the rack 220 is slidably connected within the sliding groove 140. The left casing 120 and the right casing 130 can be disassembled. At this time, the sliding groove 140 formed between the left casing 120 and the right casing 130 can be opened, and the rack 220 can be removed from the sliding groove 140. This facilitates cleaning and maintenance, or replacement of the guide wire 212, improving the user experience. In practical applications, the outlet nozzle 310 can also be a detachable structure. Specifically, the outlet nozzle 310 includes a first housing connected to the left housing 120 and a second housing connected to the right housing 130. After the left housing 120 and the right housing 130 are connected to each other, a channel is formed between the first housing and the right housing 130 for the guide wire 212 to pass through. The end of the channel away from the housing is the clamping section 311.
[0033] When the gear 210 is rotatably connected to the left housing 120 and the right housing 130, a drive shaft can be inserted through the center of the gear 210. The drive shaft is synchronously connected to the gear 210. Bearings are respectively provided on the opposite sides of the left housing 120 and the right housing 130. By inserting both ends of the drive shaft into the bearings of the left housing 120 and the right housing 130, the gear 210 can be rotatably connected between the left housing 120 and the right housing 130. To further improve the convenience of rotatably connecting the gear 210 to the left housing 120 and the right housing 130, in this embodiment, the left housing 120 and the right housing 130 are respectively provided with annular grooves 131 on their opposite sides. Connecting shafts 213 are symmetrically arranged on both sides of the gear 210 along the center of the gear 210. The two connecting shafts 213 on both sides of the gear 210 are respectively inserted into the two annular grooves 131. In practical applications, inner annular ribs and outer annular ribs can be coaxially arranged on the opposite sides of the left housing 120 and the right housing 130, and the aforementioned annular grooves 131 are formed between the outer side of the inner annular rib and the inner side of the outer annular rib. The gear 210 is inserted into the annular groove 131 of the left housing 120 and the annular groove 131 of the right housing 130 respectively through two connecting shafts 213 on both sides. This allows the two sides of the gear 210 to be rotatably connected to the left housing 120 and the right housing 130 respectively. This disassembly and assembly structure is convenient and further improves the convenience of maintenance of the gear 210 and replacement of the guide wire 212.
[0034] To facilitate sliding of the rack 220 on the housing 100, in this embodiment, an anti-slip groove 222 is formed by recessing the top side of the rack 220 downwards. In practical applications, the portion of the anti-slip groove 222 recessed on the top side of the rack 220 may only occupy a part of the rack 220 itself. When medical personnel need to slide the rack 220, they can insert their fingers into the anti-slip groove 222, which facilitates pushing the rack 220 and effectively prevents the fingers from slipping when applying force to the rack 220.
[0035] Furthermore, the bottom of the anti-slip groove 222 is provided with a plurality of second anti-slip patterns 223. These second anti-slip patterns 223 are spaced apart along the length of the rack 220 and extend along the width of the rack 220. The multiple second anti-slip patterns 223 further increase the friction of the anti-slip groove 222, making it less likely for medical personnel to slip on the rack 220 when applying force, thus improving the user experience.
[0036] When winding the guide wire 212 into the receiving groove 211, the end of the guide wire 212 needs to be positioned within the receiving groove 211 first. To facilitate fixing the guide wire 212, in this embodiment, the bottom of the receiving groove 211 is provided with a fixing hole extending radially along the gear 210. When it is necessary to fix the guide wire 212 to the receiving groove 211, one end of the guide wire 212 can be inserted into the fixing hole, and then the guide wire 212 can be wound around the receiving groove 211. This allows the guide wire 212 to be quickly fixed onto the gear 210, improving overall installation efficiency.
[0037] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A retractable handle, characterized in that: include: The outer casing (100) has an outlet (110) on one side; The winding assembly includes a gear (210) and a rack (220). The gear (210) is rotatably connected to the housing (100), and the rack (220) is slidably connected to the top side of the housing (100). The rack (220) can slide in a direction close to or away from the outlet (110). The rack (220) and the gear (210) mesh with each other. A receiving groove (211) is provided on the outer periphery of the gear (210). The receiving groove (211) extends around the center of the gear (210). A guide wire (212) is wound in the receiving groove (211). One end of the guide wire (212) extends out of the housing (100) from the outlet (110).
2. The retractable handle according to claim 1, characterized in that: The rack (220) has a clearance groove (221) on its bottom side along its length direction for avoiding the guide wire (212).
3. A retractable handle according to claim 1, characterized in that: The housing (100) is provided with a locking component at the outlet (110), which can lock or unlock the guide wire (212).
4. A retractable handle according to claim 3, characterized in that: The locking assembly includes an outlet nozzle (310) and a locking sleeve (320). The outlet nozzle (310) is connected to the outer side of the housing (100) at a position corresponding to the outlet (110). A clamping section (311) is formed at the end of the outlet nozzle (310) away from the housing (100). The outer diameter of the clamping section (311) gradually decreases in the direction away from the housing (100). The guide wire (212) passes through the clamping section (311). A straight groove (312) is provided on the outer side of the clamping section (311). The locking sleeve (320) is threaded to the outer side of the locking sleeve (320). A locking section is formed on the inner side of the end of the locking sleeve (320) away from the housing (100). The inner diameter of the locking section gradually decreases in the direction away from the housing (100). The locking section presses against the outer side of the clamping section (311).
5. A retractable handle according to claim 4, characterized in that: The locking sleeve (320) has multiple first anti-slip textures (321) on its outer side.
6. A retractable handle according to claim 1, characterized in that: The outer casing (100) includes a detachably connected left casing (120) and a right casing (130), the gear (210) is rotatably connected between the left casing (120) and the right casing (130), a groove (140) is formed between the left casing (120) and the right casing (130), and the rack (220) is slidably connected in the groove (140).
7. A retractable handle according to claim 6, characterized in that: The left housing (120) and the right housing (130) are respectively provided with annular grooves (131) on their opposite sides. The gear (210) is provided with connecting shafts (213) symmetrically arranged on both sides of the gear (210) along the center of the gear (210). The two connecting shafts (213) on both sides of the gear (210) are respectively inserted into the two annular grooves (131).
8. A retractable handle according to claim 1, characterized in that: The top side of the rack (220) is recessed downward to form an anti-slip groove (222).
9. A retractable handle according to claim 8, characterized in that: The bottom of the anti-slip groove (222) is provided with a plurality of second anti-slip patterns (223).
10. A retractable handle according to claim 1, characterized in that: The bottom of the storage groove (211) is provided with a fixing hole extending radially along the gear (210).